/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:53:29,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:53:29,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:53:29,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:53:29,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:53:29,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:53:29,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:53:29,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:53:29,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:53:29,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:53:29,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:53:29,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:53:29,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:53:29,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:53:29,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:53:29,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:53:29,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:53:29,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:53:29,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:53:29,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:53:29,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:53:29,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:53:29,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:53:29,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:53:29,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:53:29,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:53:29,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:53:29,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:53:29,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:53:29,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:53:29,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:53:29,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:53:29,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:53:29,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:53:29,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:53:29,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:53:29,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:53:29,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:53:29,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:53:29,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:53:29,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:53:29,626 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 [2020-10-14 02:53:29,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:53:29,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:53:29,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:53:29,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:53:29,652 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:53:29,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:53:29,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:53:29,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:53:29,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:53:29,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:53:29,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:53:29,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:53:29,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:53:29,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:53:29,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:53:29,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:53:29,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:53:29,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:53:29,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:53:29,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:53:29,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:53:29,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:53:29,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:53:29,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:53:29,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:53:29,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:53:29,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:53:29,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:53:29,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:53:29,657 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:53:29,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:53:29,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:53:29,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:53:29,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:53:29,972 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:53:29,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-14 02:53:30,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7a6299a/f212bdb50d894ba0bd8dcfb81f863742/FLAG31e73c42a [2020-10-14 02:53:30,807 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:53:30,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-14 02:53:30,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7a6299a/f212bdb50d894ba0bd8dcfb81f863742/FLAG31e73c42a [2020-10-14 02:53:31,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7a6299a/f212bdb50d894ba0bd8dcfb81f863742 [2020-10-14 02:53:31,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:53:31,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:53:31,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:53:31,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:53:31,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:53:31,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:53:31" (1/1) ... [2020-10-14 02:53:31,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:31, skipping insertion in model container [2020-10-14 02:53:31,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:53:31" (1/1) ... [2020-10-14 02:53:31,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:53:31,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:53:32,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:53:33,006 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:53:33,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:53:33,748 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:53:33,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33 WrapperNode [2020-10-14 02:53:33,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:53:33,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:53:33,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:53:33,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:53:33,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (1/1) ... [2020-10-14 02:53:33,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (1/1) ... [2020-10-14 02:53:33,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (1/1) ... [2020-10-14 02:53:33,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (1/1) ... [2020-10-14 02:53:33,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (1/1) ... [2020-10-14 02:53:33,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (1/1) ... [2020-10-14 02:53:34,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (1/1) ... [2020-10-14 02:53:34,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:53:34,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:53:34,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:53:34,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:53:34,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (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 [2020-10-14 02:53:34,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:53:34,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:53:34,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:53:34,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:53:34,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:53:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:53:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:53:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:53:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:53:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:53:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:53:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:53:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:53:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:53:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:53:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:53:39,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:53:39,106 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:53:39,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:53:39 BoogieIcfgContainer [2020-10-14 02:53:39,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:53:39,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:53:39,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:53:39,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:53:39,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:53:31" (1/3) ... [2020-10-14 02:53:39,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a93e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:53:39, skipping insertion in model container [2020-10-14 02:53:39,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:53:33" (2/3) ... [2020-10-14 02:53:39,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a93e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:53:39, skipping insertion in model container [2020-10-14 02:53:39,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:53:39" (3/3) ... [2020-10-14 02:53:39,137 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2020-10-14 02:53:39,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:53:39,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:53:39,183 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:53:39,223 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:53:39,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:53:39,224 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:53:39,224 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:53:39,224 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:53:39,224 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:53:39,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:53:39,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:53:39,270 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:53:39,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 02:53:39,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:39,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:53:39,281 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash 415981533, now seen corresponding path program 1 times [2020-10-14 02:53:39,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:39,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903412129] [2020-10-14 02:53:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:39,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:39,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 02:53:39,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 02:53:39,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:39,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:53:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:53:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 02:53:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:53:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:40,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:40,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 02:53:40,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:40,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:53:40,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:40,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903412129] [2020-10-14 02:53:40,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:53:40,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:53:40,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118552159] [2020-10-14 02:53:40,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:53:40,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:40,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:53:40,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:53:40,064 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:53:48,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:48,309 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:53:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:48,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 02:53:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:48,340 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:53:48,340 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:53:48,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:48,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:53:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:53:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:53:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:53:48,503 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 16 [2020-10-14 02:53:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:48,504 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:53:48,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:53:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:53:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 02:53:48,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:48,511 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:53:48,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:53:48,514 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:48,514 INFO L82 PathProgramCache]: Analyzing trace with hash 592611877, now seen corresponding path program 1 times [2020-10-14 02:53:48,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:48,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819692064] [2020-10-14 02:53:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:48,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 02:53:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 02:53:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:48,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:53:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 02:53:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:48,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:48,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:53:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:48,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:53:48,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:49,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:49,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:53:49,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:53:49,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:49,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:53:49,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:49,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819692064] [2020-10-14 02:53:49,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:49,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:49,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136345042] [2020-10-14 02:53:49,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:49,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:49,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:49,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:49,126 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:53:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:58,185 INFO L93 Difference]: Finished difference Result 4672 states and 7649 transitions. [2020-10-14 02:53:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:58,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 02:53:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:58,203 INFO L225 Difference]: With dead ends: 4672 [2020-10-14 02:53:58,203 INFO L226 Difference]: Without dead ends: 3125 [2020-10-14 02:53:58,209 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 [2020-10-14 02:53:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-14 02:53:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-14 02:53:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-14 02:53:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4247 transitions. [2020-10-14 02:53:58,303 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4247 transitions. Word has length 91 [2020-10-14 02:53:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:58,304 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4247 transitions. [2020-10-14 02:53:58,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:53:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4247 transitions. [2020-10-14 02:53:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 02:53:58,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:58,307 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:53:58,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:53:58,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1064331940, now seen corresponding path program 1 times [2020-10-14 02:53:58,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:58,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757299275] [2020-10-14 02:53:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:59,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:59,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:53:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:53:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-10-14 02:53:59,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:59,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:53:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 02:53:59,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:59,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:59,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:53:59,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:59,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:59,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:53:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 02:53:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:59,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:53:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:59,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757299275] [2020-10-14 02:53:59,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:59,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:59,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052495417] [2020-10-14 02:53:59,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:59,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:59,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:59,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:59,498 INFO L87 Difference]: Start difference. First operand 3109 states and 4247 transitions. Second operand 5 states. [2020-10-14 02:54:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:09,155 INFO L93 Difference]: Finished difference Result 9334 states and 12909 transitions. [2020-10-14 02:54:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:09,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 02:54:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:09,194 INFO L225 Difference]: With dead ends: 9334 [2020-10-14 02:54:09,195 INFO L226 Difference]: Without dead ends: 6231 [2020-10-14 02:54:09,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:54:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2020-10-14 02:54:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 6223. [2020-10-14 02:54:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-10-14 02:54:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 7832 transitions. [2020-10-14 02:54:09,406 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 7832 transitions. Word has length 94 [2020-10-14 02:54:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:09,407 INFO L479 AbstractCegarLoop]: Abstraction has 6223 states and 7832 transitions. [2020-10-14 02:54:09,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 7832 transitions. [2020-10-14 02:54:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 02:54:09,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:09,428 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:54:09,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:54:09,429 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1578899491, now seen corresponding path program 1 times [2020-10-14 02:54:09,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:09,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23029596] [2020-10-14 02:54:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:09,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:10,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:10,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 02:54:10,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:54:10,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-14 02:54:10,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:10,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:54:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 02:54:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:10,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:10,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:10,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:54:10,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:10,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:10,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:10,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:10,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:54:10,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:54:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:10,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:54:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:54:10,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23029596] [2020-10-14 02:54:10,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:10,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:54:10,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733106194] [2020-10-14 02:54:10,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:54:10,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:10,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:54:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:54:10,451 INFO L87 Difference]: Start difference. First operand 6223 states and 7832 transitions. Second operand 5 states. [2020-10-14 02:54:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:22,153 INFO L93 Difference]: Finished difference Result 18668 states and 23860 transitions. [2020-10-14 02:54:22,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:22,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-14 02:54:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:22,215 INFO L225 Difference]: With dead ends: 18668 [2020-10-14 02:54:22,215 INFO L226 Difference]: Without dead ends: 12451 [2020-10-14 02:54:22,229 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 [2020-10-14 02:54:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12451 states. [2020-10-14 02:54:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12451 to 10905. [2020-10-14 02:54:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10905 states. [2020-10-14 02:54:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10905 states to 10905 states and 13815 transitions. [2020-10-14 02:54:22,533 INFO L78 Accepts]: Start accepts. Automaton has 10905 states and 13815 transitions. Word has length 95 [2020-10-14 02:54:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:22,534 INFO L479 AbstractCegarLoop]: Abstraction has 10905 states and 13815 transitions. [2020-10-14 02:54:22,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 10905 states and 13815 transitions. [2020-10-14 02:54:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 02:54:22,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:22,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:22,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:54:22,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2055296553, now seen corresponding path program 1 times [2020-10-14 02:54:22,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:22,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778018346] [2020-10-14 02:54:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:23,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 02:54:23,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:54:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-14 02:54:23,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:23,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 02:54:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 02:54:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:23,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:54:23,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:23,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:23,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:54:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:23,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:54:23,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:54:23,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:23,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 02:54:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:54:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:54:23,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778018346] [2020-10-14 02:54:23,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:23,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:54:23,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572338770] [2020-10-14 02:54:23,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:54:23,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:23,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:54:23,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:54:23,551 INFO L87 Difference]: Start difference. First operand 10905 states and 13815 transitions. Second operand 5 states. [2020-10-14 02:54:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:37,410 INFO L93 Difference]: Finished difference Result 28028 states and 36519 transitions. [2020-10-14 02:54:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:54:37,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 02:54:37,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:37,493 INFO L225 Difference]: With dead ends: 28028 [2020-10-14 02:54:37,493 INFO L226 Difference]: Without dead ends: 17129 [2020-10-14 02:54:37,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:54:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17129 states. [2020-10-14 02:54:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17129 to 17113. [2020-10-14 02:54:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17113 states. [2020-10-14 02:54:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17113 states to 17113 states and 22244 transitions. [2020-10-14 02:54:38,020 INFO L78 Accepts]: Start accepts. Automaton has 17113 states and 22244 transitions. Word has length 105 [2020-10-14 02:54:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:38,021 INFO L479 AbstractCegarLoop]: Abstraction has 17113 states and 22244 transitions. [2020-10-14 02:54:38,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:54:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 17113 states and 22244 transitions. [2020-10-14 02:54:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 02:54:38,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:38,026 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:54:38,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:54:38,027 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:38,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:38,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1758325736, now seen corresponding path program 1 times [2020-10-14 02:54:38,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:38,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490993152] [2020-10-14 02:54:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:39,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:39,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 02:54:39,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:54:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-10-14 02:54:39,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:39,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:54:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:54:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:39,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:39,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:39,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:39,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:39,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:54:39,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:39,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:39,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:39,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:54:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:54:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:40,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:54:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:40,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:54:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:40,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:40,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:40,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:54:40,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 02:54:40,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:40,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:54:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:54:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:54:40,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490993152] [2020-10-14 02:54:40,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:40,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:54:40,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814046227] [2020-10-14 02:54:40,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:54:40,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:40,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:54:40,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:54:40,304 INFO L87 Difference]: Start difference. First operand 17113 states and 22244 transitions. Second operand 7 states. [2020-10-14 02:55:02,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:02,670 INFO L93 Difference]: Finished difference Result 46388 states and 65349 transitions. [2020-10-14 02:55:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:55:02,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-14 02:55:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:02,892 INFO L225 Difference]: With dead ends: 46388 [2020-10-14 02:55:02,892 INFO L226 Difference]: Without dead ends: 29281 [2020-10-14 02:55:02,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:55:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29281 states. [2020-10-14 02:55:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29281 to 27482. [2020-10-14 02:55:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27482 states. [2020-10-14 02:55:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27482 states to 27482 states and 36079 transitions. [2020-10-14 02:55:03,904 INFO L78 Accepts]: Start accepts. Automaton has 27482 states and 36079 transitions. Word has length 163 [2020-10-14 02:55:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:03,905 INFO L479 AbstractCegarLoop]: Abstraction has 27482 states and 36079 transitions. [2020-10-14 02:55:03,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:55:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27482 states and 36079 transitions. [2020-10-14 02:55:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 02:55:03,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:03,911 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:55:03,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:55:03,912 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash 824985548, now seen corresponding path program 1 times [2020-10-14 02:55:03,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:03,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323294055] [2020-10-14 02:55:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:06,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:06,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 02:55:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:55:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2329 [2020-10-14 02:55:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:06,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:06,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-14 02:55:06,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 02:55:06,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:06,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:55:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:06,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:06,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:06,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 02:55:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 02:55:06,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:06,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 02:55:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:55:06,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323294055] [2020-10-14 02:55:06,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:06,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:55:06,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096511105] [2020-10-14 02:55:06,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:55:06,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:06,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:55:06,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:55:06,804 INFO L87 Difference]: Start difference. First operand 27482 states and 36079 transitions. Second operand 6 states. [2020-10-14 02:55:30,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:55:30,749 INFO L93 Difference]: Finished difference Result 70516 states and 94066 transitions. [2020-10-14 02:55:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:55:30,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-14 02:55:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:55:30,918 INFO L225 Difference]: With dead ends: 70516 [2020-10-14 02:55:30,919 INFO L226 Difference]: Without dead ends: 43800 [2020-10-14 02:55:30,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:55:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43800 states. [2020-10-14 02:55:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43800 to 39193. [2020-10-14 02:55:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39193 states. [2020-10-14 02:55:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39193 states to 39193 states and 52555 transitions. [2020-10-14 02:55:31,832 INFO L78 Accepts]: Start accepts. Automaton has 39193 states and 52555 transitions. Word has length 170 [2020-10-14 02:55:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:31,832 INFO L479 AbstractCegarLoop]: Abstraction has 39193 states and 52555 transitions. [2020-10-14 02:55:31,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:55:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 39193 states and 52555 transitions. [2020-10-14 02:55:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 02:55:31,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:31,839 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:55:31,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:55:31,840 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash 947895328, now seen corresponding path program 1 times [2020-10-14 02:55:31,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:31,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604134436] [2020-10-14 02:55:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 02:55:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:55:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-10-14 02:55:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:55:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:55:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:55:33,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:55:33,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 02:55:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:55:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:33,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 02:55:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:33,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:55:33,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 02:55:33,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:33,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:55:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:55:33,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:55:33,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604134436] [2020-10-14 02:55:33,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:33,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:55:33,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052391719] [2020-10-14 02:55:33,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:55:33,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:33,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:55:33,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:55:33,989 INFO L87 Difference]: Start difference. First operand 39193 states and 52555 transitions. Second operand 7 states. [2020-10-14 02:56:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:00,843 INFO L93 Difference]: Finished difference Result 94211 states and 141610 transitions. [2020-10-14 02:56:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:56:00,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-14 02:56:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:01,109 INFO L225 Difference]: With dead ends: 94211 [2020-10-14 02:56:01,109 INFO L226 Difference]: Without dead ends: 58831 [2020-10-14 02:56:01,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:56:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58831 states. [2020-10-14 02:56:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58831 to 57592. [2020-10-14 02:56:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57592 states. [2020-10-14 02:56:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57592 states to 57592 states and 76778 transitions. [2020-10-14 02:56:02,742 INFO L78 Accepts]: Start accepts. Automaton has 57592 states and 76778 transitions. Word has length 191 [2020-10-14 02:56:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:02,742 INFO L479 AbstractCegarLoop]: Abstraction has 57592 states and 76778 transitions. [2020-10-14 02:56:02,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:56:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 57592 states and 76778 transitions. [2020-10-14 02:56:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 02:56:02,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:02,752 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:56:02,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:56:02,752 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 901225927, now seen corresponding path program 1 times [2020-10-14 02:56:02,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:02,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238665461] [2020-10-14 02:56:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:04,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 02:56:04,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:56:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-14 02:56:04,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:04,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:56:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:56:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:56:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:04,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:04,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:04,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:56:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:04,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:04,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:04,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:56:04,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:56:04,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:04,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:56:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 02:56:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:04,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:04,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:56:04,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:04,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:56:04,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:04,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:56:04,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:56:04,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238665461] [2020-10-14 02:56:04,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:56:04,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:56:04,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946949708] [2020-10-14 02:56:04,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:56:04,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:04,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:56:04,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:56:04,574 INFO L87 Difference]: Start difference. First operand 57592 states and 76778 transitions. Second operand 7 states. [2020-10-14 02:56:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:29,136 INFO L93 Difference]: Finished difference Result 131698 states and 185576 transitions. [2020-10-14 02:56:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:56:29,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-14 02:56:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:29,483 INFO L225 Difference]: With dead ends: 131698 [2020-10-14 02:56:29,484 INFO L226 Difference]: Without dead ends: 74116 [2020-10-14 02:56:29,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:56:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74116 states. [2020-10-14 02:56:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74116 to 73277. [2020-10-14 02:56:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73277 states. [2020-10-14 02:56:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73277 states to 73277 states and 95765 transitions. [2020-10-14 02:56:31,038 INFO L78 Accepts]: Start accepts. Automaton has 73277 states and 95765 transitions. Word has length 206 [2020-10-14 02:56:31,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:31,039 INFO L479 AbstractCegarLoop]: Abstraction has 73277 states and 95765 transitions. [2020-10-14 02:56:31,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:56:31,040 INFO L276 IsEmpty]: Start isEmpty. Operand 73277 states and 95765 transitions. [2020-10-14 02:56:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 02:56:31,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:31,062 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 02:56:31,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:56:31,063 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash 994185330, now seen corresponding path program 1 times [2020-10-14 02:56:31,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:31,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168585005] [2020-10-14 02:56:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:34,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:34,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 02:56:34,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:56:34,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3472 [2020-10-14 02:56:34,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:34,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 02:56:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 02:56:34,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:56:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:34,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:34,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:56:34,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:34,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:56:34,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:34,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:34,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:56:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:56:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:56:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:34,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:34,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:56:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:56:34,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:34,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:56:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:56:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 02:56:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:34,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 02:56:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:35,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:56:35,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 02:56:35,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:56:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-14 02:56:35,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:56:35,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:56:35,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:56:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:56:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 02:56:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:56:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:56:35,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168585005] [2020-10-14 02:56:35,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:56:35,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:56:35,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855840563] [2020-10-14 02:56:35,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:56:35,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:56:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:56:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:56:35,378 INFO L87 Difference]: Start difference. First operand 73277 states and 95765 transitions. Second operand 7 states. [2020-10-14 02:56:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:56:56,710 INFO L93 Difference]: Finished difference Result 182273 states and 241496 transitions. [2020-10-14 02:56:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:56:56,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 02:56:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:56:57,537 INFO L225 Difference]: With dead ends: 182273 [2020-10-14 02:56:57,537 INFO L226 Difference]: Without dead ends: 98845 [2020-10-14 02:56:57,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:56:57,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98845 states. [2020-10-14 02:56:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98845 to 93263. [2020-10-14 02:56:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93263 states. [2020-10-14 02:56:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93263 states to 93263 states and 108952 transitions. [2020-10-14 02:56:59,154 INFO L78 Accepts]: Start accepts. Automaton has 93263 states and 108952 transitions. Word has length 247 [2020-10-14 02:56:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:56:59,155 INFO L479 AbstractCegarLoop]: Abstraction has 93263 states and 108952 transitions. [2020-10-14 02:56:59,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:56:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 93263 states and 108952 transitions. [2020-10-14 02:56:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-14 02:56:59,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:56:59,187 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:56:59,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:56:59,188 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:56:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:56:59,188 INFO L82 PathProgramCache]: Analyzing trace with hash 783068368, now seen corresponding path program 1 times [2020-10-14 02:56:59,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:56:59,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63519161] [2020-10-14 02:56:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:56:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:56:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:56:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:04,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-14 02:57:04,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:57:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4889 [2020-10-14 02:57:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:04,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:57:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:57:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-14 02:57:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:04,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:04,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:04,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 02:57:04,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:04,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:57:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:04,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:04,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:57:04,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:57:04,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 02:57:04,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:04,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:57:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 02:57:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 02:57:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:05,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:57:05,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 02:57:05,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:05,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:57:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:57:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:05,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-14 02:57:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:05,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:05,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:57:05,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 02:57:05,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:05,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 02:57:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-14 02:57:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:05,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:05,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:57:05,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:57:05,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:05,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 02:57:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 128 proven. 307 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 02:57:05,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63519161] [2020-10-14 02:57:05,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:05,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:57:05,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981795160] [2020-10-14 02:57:05,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:57:05,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:05,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:57:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:57:05,798 INFO L87 Difference]: Start difference. First operand 93263 states and 108952 transitions. Second operand 8 states.