/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:06:12,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:06:12,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:06:12,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:06:12,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:06:12,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:06:12,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:06:12,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:06:12,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:06:12,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:06:12,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:06:12,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:06:12,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:06:12,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:06:12,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:06:12,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:06:12,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:06:12,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:06:12,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:06:12,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:06:12,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:06:12,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:06:12,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:06:12,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:06:12,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:06:12,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:06:12,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:06:12,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:06:12,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:06:12,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:06:12,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:06:12,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:06:12,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:06:12,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:06:12,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:06:12,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:06:12,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:06:12,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:06:12,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:06:12,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:06:12,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:06:12,640 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 21:06:12,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:06:12,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:06:12,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:06:12,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:06:12,681 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:06:12,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:06:12,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:06:12,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:06:12,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:06:12,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:06:12,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:06:12,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:06:12,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:06:12,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:06:12,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:06:12,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:06:12,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:06:12,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:06:12,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:06:12,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:06:12,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:06:12,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:06:12,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:06:12,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:06:12,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:06:12,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:06:12,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:06:12,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:06:12,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:06:12,687 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:06:13,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:06:13,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:06:13,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:06:13,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:06:13,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:06:13,063 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-14 21:06:13,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adcb827f0/d7c6a7335f794a27854d5b565338dcc6/FLAG0321c2c4c [2020-10-14 21:06:13,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:06:13,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-14 21:06:13,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adcb827f0/d7c6a7335f794a27854d5b565338dcc6/FLAG0321c2c4c [2020-10-14 21:06:13,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adcb827f0/d7c6a7335f794a27854d5b565338dcc6 [2020-10-14 21:06:14,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:06:14,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:06:14,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:14,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:06:14,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:06:14,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:13" (1/1) ... [2020-10-14 21:06:14,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4635f4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:14, skipping insertion in model container [2020-10-14 21:06:14,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:13" (1/1) ... [2020-10-14 21:06:14,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:06:14,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:06:15,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:15,775 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:06:16,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:16,565 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:06:16,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16 WrapperNode [2020-10-14 21:06:16,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:16,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:06:16,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:06:16,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:06:16,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (1/1) ... [2020-10-14 21:06:16,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:06:16,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:06:16,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:06:16,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:06:16,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (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 21:06:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:06:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:06:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:06:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:06:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:06:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:06:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:06:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:06:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:06:22,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:06:22,033 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:06:22,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:22 BoogieIcfgContainer [2020-10-14 21:06:22,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:06:22,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:06:22,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:06:22,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:06:22,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:06:13" (1/3) ... [2020-10-14 21:06:22,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c696259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:22, skipping insertion in model container [2020-10-14 21:06:22,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:16" (2/3) ... [2020-10-14 21:06:22,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c696259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:22, skipping insertion in model container [2020-10-14 21:06:22,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:22" (3/3) ... [2020-10-14 21:06:22,055 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2020-10-14 21:06:22,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:06:22,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:06:22,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:06:22,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:06:22,132 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:06:22,132 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:06:22,132 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:06:22,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:06:22,133 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:06:22,133 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:06:22,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:06:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:06:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 21:06:22,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:22,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:22,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:22,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:22,206 INFO L82 PathProgramCache]: Analyzing trace with hash 23636122, now seen corresponding path program 1 times [2020-10-14 21:06:22,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:22,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93914495] [2020-10-14 21:06:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 21:06:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-14 21:06:22,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 21:06:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:06:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:22,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:06:22,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:22,915 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 21:06:22,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93914495] [2020-10-14 21:06:22,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:22,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:06:22,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336855874] [2020-10-14 21:06:22,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:06:22,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:06:22,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:06:22,943 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:06:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:31,466 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:06:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:06:31,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 21:06:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:31,523 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:06:31,523 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:06:31,539 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 21:06:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:06:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:06:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:06:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-14 21:06:31,747 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 25 [2020-10-14 21:06:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:31,747 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-14 21:06:31,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:06:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-14 21:06:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 21:06:31,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:31,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:31,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:06:31,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash 65471695, now seen corresponding path program 1 times [2020-10-14 21:06:31,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:31,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546782049] [2020-10-14 21:06:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:06:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-10-14 21:06:32,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:32,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:06:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:33,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:33,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:33,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:06:33,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:33,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:33,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:33,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:33,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:06:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:06:33,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:33,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:06:33,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:33,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546782049] [2020-10-14 21:06:33,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:33,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:33,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223227325] [2020-10-14 21:06:33,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:33,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:33,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:33,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:33,273 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 7 states. [2020-10-14 21:06:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:43,514 INFO L93 Difference]: Finished difference Result 3976 states and 7196 transitions. [2020-10-14 21:06:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:06:43,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-14 21:06:43,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:43,528 INFO L225 Difference]: With dead ends: 3976 [2020-10-14 21:06:43,529 INFO L226 Difference]: Without dead ends: 2429 [2020-10-14 21:06:43,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:06:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2020-10-14 21:06:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2355. [2020-10-14 21:06:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-10-14 21:06:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3819 transitions. [2020-10-14 21:06:43,639 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3819 transitions. Word has length 98 [2020-10-14 21:06:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:43,640 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 3819 transitions. [2020-10-14 21:06:43,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3819 transitions. [2020-10-14 21:06:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 21:06:43,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:43,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:43,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:06:43,644 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1515762381, now seen corresponding path program 1 times [2020-10-14 21:06:43,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:43,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602488131] [2020-10-14 21:06:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:44,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:44,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 21:06:44,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-14 21:06:44,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:44,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:06:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:06:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:44,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:44,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:06:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:44,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:44,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:06:44,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:06:44,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:44,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:06:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:06:44,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602488131] [2020-10-14 21:06:44,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:44,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:06:44,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073145858] [2020-10-14 21:06:44,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:06:44,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:44,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:06:44,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:06:44,523 INFO L87 Difference]: Start difference. First operand 2355 states and 3819 transitions. Second operand 6 states. [2020-10-14 21:06:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:54,735 INFO L93 Difference]: Finished difference Result 7156 states and 11715 transitions. [2020-10-14 21:06:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:06:54,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-14 21:06:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:54,762 INFO L225 Difference]: With dead ends: 7156 [2020-10-14 21:06:54,762 INFO L226 Difference]: Without dead ends: 4807 [2020-10-14 21:06:54,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:06:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2020-10-14 21:06:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4763. [2020-10-14 21:06:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4763 states. [2020-10-14 21:06:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 6809 transitions. [2020-10-14 21:06:54,891 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 6809 transitions. Word has length 100 [2020-10-14 21:06:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:54,892 INFO L479 AbstractCegarLoop]: Abstraction has 4763 states and 6809 transitions. [2020-10-14 21:06:54,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:06:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 6809 transitions. [2020-10-14 21:06:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 21:06:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:54,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:54,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:06:54,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:54,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1725663649, now seen corresponding path program 1 times [2020-10-14 21:06:54,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:54,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336548201] [2020-10-14 21:06:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:55,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:06:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-14 21:06:55,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:55,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:06:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:55,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:55,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:55,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:06:55,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:55,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:55,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:55,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:06:55,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 21:06:55,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:55,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:06:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:06:55,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336548201] [2020-10-14 21:06:55,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:55,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:06:55,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961835182] [2020-10-14 21:06:55,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:55,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:55,919 INFO L87 Difference]: Start difference. First operand 4763 states and 6809 transitions. Second operand 7 states. [2020-10-14 21:07:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:08,093 INFO L93 Difference]: Finished difference Result 14614 states and 21387 transitions. [2020-10-14 21:07:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:08,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-14 21:07:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:08,158 INFO L225 Difference]: With dead ends: 14614 [2020-10-14 21:07:08,159 INFO L226 Difference]: Without dead ends: 9857 [2020-10-14 21:07:08,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:08,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9857 states. [2020-10-14 21:07:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9857 to 8871. [2020-10-14 21:07:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8871 states. [2020-10-14 21:07:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8871 states to 8871 states and 12040 transitions. [2020-10-14 21:07:08,466 INFO L78 Accepts]: Start accepts. Automaton has 8871 states and 12040 transitions. Word has length 106 [2020-10-14 21:07:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:08,467 INFO L479 AbstractCegarLoop]: Abstraction has 8871 states and 12040 transitions. [2020-10-14 21:07:08,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8871 states and 12040 transitions. [2020-10-14 21:07:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 21:07:08,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:08,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:08,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:07:08,474 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:08,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1700675625, now seen corresponding path program 1 times [2020-10-14 21:07:08,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:08,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362134362] [2020-10-14 21:07:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:08,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:09,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 21:07:09,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 21:07:09,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:09,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:09,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:07:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:07:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:09,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:09,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:09,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:07:09,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:09,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:09,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:09,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:09,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:09,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:07:09,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:09,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:07:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:07:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:07:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:10,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:07:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 21:07:10,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:10,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:07:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:07:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:10,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362134362] [2020-10-14 21:07:10,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:10,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:10,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939373477] [2020-10-14 21:07:10,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:10,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:10,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:10,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:10,116 INFO L87 Difference]: Start difference. First operand 8871 states and 12040 transitions. Second operand 7 states. [2020-10-14 21:07:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:23,369 INFO L93 Difference]: Finished difference Result 14803 states and 20545 transitions. [2020-10-14 21:07:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:07:23,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-14 21:07:23,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:23,402 INFO L225 Difference]: With dead ends: 14803 [2020-10-14 21:07:23,403 INFO L226 Difference]: Without dead ends: 5936 [2020-10-14 21:07:23,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5936 states. [2020-10-14 21:07:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5936 to 5588. [2020-10-14 21:07:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5588 states. [2020-10-14 21:07:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 6889 transitions. [2020-10-14 21:07:23,554 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 6889 transitions. Word has length 200 [2020-10-14 21:07:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:23,555 INFO L479 AbstractCegarLoop]: Abstraction has 5588 states and 6889 transitions. [2020-10-14 21:07:23,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 6889 transitions. [2020-10-14 21:07:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 21:07:23,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:23,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:23,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:07:23,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:23,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1838510741, now seen corresponding path program 1 times [2020-10-14 21:07:23,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:23,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303079437] [2020-10-14 21:07:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:25,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 21:07:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-14 21:07:25,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:25,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 21:07:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:25,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:25,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:25,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:25,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:25,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:25,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:26,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:07:26,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 21:07:26,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:26,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:07:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:26,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303079437] [2020-10-14 21:07:26,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:26,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:26,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683002378] [2020-10-14 21:07:26,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:26,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:26,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:26,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:26,626 INFO L87 Difference]: Start difference. First operand 5588 states and 6889 transitions. Second operand 7 states. [2020-10-14 21:07:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:37,686 INFO L93 Difference]: Finished difference Result 10618 states and 13237 transitions. [2020-10-14 21:07:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:07:37,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-14 21:07:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:37,716 INFO L225 Difference]: With dead ends: 10618 [2020-10-14 21:07:37,716 INFO L226 Difference]: Without dead ends: 5803 [2020-10-14 21:07:37,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:07:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2020-10-14 21:07:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5586. [2020-10-14 21:07:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5586 states. [2020-10-14 21:07:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 6873 transitions. [2020-10-14 21:07:37,842 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 6873 transitions. Word has length 224 [2020-10-14 21:07:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:37,843 INFO L479 AbstractCegarLoop]: Abstraction has 5586 states and 6873 transitions. [2020-10-14 21:07:37,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 6873 transitions. [2020-10-14 21:07:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 21:07:37,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:37,847 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:37,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:07:37,848 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1173679566, now seen corresponding path program 1 times [2020-10-14 21:07:37,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:37,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313262871] [2020-10-14 21:07:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 21:07:39,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-14 21:07:39,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:07:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:07:39,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:39,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:07:39,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:07:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 21:07:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:07:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:07:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:40,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:40,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 21:07:40,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:40,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:07:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:40,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313262871] [2020-10-14 21:07:40,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:40,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:40,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098487390] [2020-10-14 21:07:40,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:40,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:40,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:40,324 INFO L87 Difference]: Start difference. First operand 5586 states and 6873 transitions. Second operand 7 states. [2020-10-14 21:07:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:59,973 INFO L93 Difference]: Finished difference Result 15561 states and 19853 transitions. [2020-10-14 21:07:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:07:59,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-14 21:07:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:00,017 INFO L225 Difference]: With dead ends: 15561 [2020-10-14 21:08:00,017 INFO L226 Difference]: Without dead ends: 10748 [2020-10-14 21:08:00,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 21:08:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10748 states. [2020-10-14 21:08:00,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 9746. [2020-10-14 21:08:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9746 states. [2020-10-14 21:08:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9746 states to 9746 states and 12359 transitions. [2020-10-14 21:08:00,214 INFO L78 Accepts]: Start accepts. Automaton has 9746 states and 12359 transitions. Word has length 245 [2020-10-14 21:08:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:00,215 INFO L479 AbstractCegarLoop]: Abstraction has 9746 states and 12359 transitions. [2020-10-14 21:08:00,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 9746 states and 12359 transitions. [2020-10-14 21:08:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 21:08:00,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:00,222 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:00,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:08:00,222 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:00,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1600804235, now seen corresponding path program 1 times [2020-10-14 21:08:00,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:00,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132548692] [2020-10-14 21:08:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:05,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:05,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 21:08:05,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:08:05,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4781 [2020-10-14 21:08:05,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:05,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:08:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 311 [2020-10-14 21:08:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:05,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:05,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:08:05,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:05,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:05,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:05,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:05,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 21:08:05,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:05,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:08:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:05,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:05,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:08:05,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 21:08:05,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:05,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:08:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:08:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:06,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:06,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:08:06,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 21:08:06,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:06,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:08:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 21:08:06,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132548692] [2020-10-14 21:08:06,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:06,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:06,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499257648] [2020-10-14 21:08:06,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:06,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:06,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:06,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:06,568 INFO L87 Difference]: Start difference. First operand 9746 states and 12359 transitions. Second operand 7 states. [2020-10-14 21:08:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:23,337 INFO L93 Difference]: Finished difference Result 27243 states and 36168 transitions. [2020-10-14 21:08:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:08:23,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-14 21:08:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:23,403 INFO L225 Difference]: With dead ends: 27243 [2020-10-14 21:08:23,403 INFO L226 Difference]: Without dead ends: 17477 [2020-10-14 21:08:23,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:08:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17477 states. [2020-10-14 21:08:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17477 to 16444. [2020-10-14 21:08:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16444 states. [2020-10-14 21:08:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16444 states to 16444 states and 20874 transitions. [2020-10-14 21:08:23,839 INFO L78 Accepts]: Start accepts. Automaton has 16444 states and 20874 transitions. Word has length 326 [2020-10-14 21:08:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:23,840 INFO L479 AbstractCegarLoop]: Abstraction has 16444 states and 20874 transitions. [2020-10-14 21:08:23,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16444 states and 20874 transitions. [2020-10-14 21:08:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 21:08:23,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:23,847 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:23,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:08:23,848 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:23,848 INFO L82 PathProgramCache]: Analyzing trace with hash 765026031, now seen corresponding path program 1 times [2020-10-14 21:08:23,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:23,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267919861] [2020-10-14 21:08:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:27,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:28,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:28,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-14 21:08:28,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:08:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4203 [2020-10-14 21:08:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:28,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:08:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:28,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:28,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:08:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:28,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:28,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:28,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:28,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-14 21:08:28,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:28,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:28,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:28,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:28,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:08:28,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 21:08:28,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:28,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:08:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:08:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:28,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:28,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:28,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:28,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 21:08:28,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:28,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:08:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 138 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:08:29,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267919861] [2020-10-14 21:08:29,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:29,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:29,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881196999] [2020-10-14 21:08:29,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:29,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:29,143 INFO L87 Difference]: Start difference. First operand 16444 states and 20874 transitions. Second operand 7 states. [2020-10-14 21:08:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:51,773 INFO L93 Difference]: Finished difference Result 47241 states and 63171 transitions. [2020-10-14 21:08:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:08:51,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-14 21:08:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:51,933 INFO L225 Difference]: With dead ends: 47241 [2020-10-14 21:08:51,934 INFO L226 Difference]: Without dead ends: 31570 [2020-10-14 21:08:51,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:08:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31570 states. [2020-10-14 21:08:52,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31570 to 30485. [2020-10-14 21:08:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30485 states. [2020-10-14 21:08:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30485 states to 30485 states and 39271 transitions. [2020-10-14 21:08:52,870 INFO L78 Accepts]: Start accepts. Automaton has 30485 states and 39271 transitions. Word has length 328 [2020-10-14 21:08:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:52,871 INFO L479 AbstractCegarLoop]: Abstraction has 30485 states and 39271 transitions. [2020-10-14 21:08:52,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 30485 states and 39271 transitions. [2020-10-14 21:08:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 21:08:52,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:52,881 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:52,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:08:52,881 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:52,883 INFO L82 PathProgramCache]: Analyzing trace with hash -801089097, now seen corresponding path program 1 times [2020-10-14 21:08:52,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:52,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529267626] [2020-10-14 21:08:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:58,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 21:08:58,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:08:58,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 21:08:58,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:58,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:08:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:08:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:58,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:58,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:58,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:58,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:08:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:58,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:58,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:58,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:08:58,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 21:08:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:58,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:08:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:08:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:08:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 21:08:58,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:58,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:08:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-14 21:08:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:58,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:58,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 21:08:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:58,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:08:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 138 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:08:58,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529267626] [2020-10-14 21:08:58,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:58,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:58,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514875485] [2020-10-14 21:08:58,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:58,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:58,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:58,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:58,951 INFO L87 Difference]: Start difference. First operand 30485 states and 39271 transitions. Second operand 7 states. [2020-10-14 21:09:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:27,558 INFO L93 Difference]: Finished difference Result 68801 states and 90618 transitions. [2020-10-14 21:09:27,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:09:27,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-14 21:09:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:27,769 INFO L225 Difference]: With dead ends: 68801 [2020-10-14 21:09:27,770 INFO L226 Difference]: Without dead ends: 38313 [2020-10-14 21:09:27,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:09:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38313 states. [2020-10-14 21:09:29,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38313 to 37306. [2020-10-14 21:09:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37306 states. [2020-10-14 21:09:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37306 states to 37306 states and 48222 transitions. [2020-10-14 21:09:29,190 INFO L78 Accepts]: Start accepts. Automaton has 37306 states and 48222 transitions. Word has length 332 [2020-10-14 21:09:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:29,191 INFO L479 AbstractCegarLoop]: Abstraction has 37306 states and 48222 transitions. [2020-10-14 21:09:29,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:09:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 37306 states and 48222 transitions. [2020-10-14 21:09:29,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-14 21:09:29,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:29,201 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:29,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:09:29,202 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:29,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1012043143, now seen corresponding path program 1 times [2020-10-14 21:09:29,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:29,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684294789] [2020-10-14 21:09:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:31,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:31,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 21:09:31,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:09:31,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-10-14 21:09:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:31,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:09:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:09:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:09:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:09:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:31,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:31,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:31,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:09:31,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 21:09:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:31,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:09:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:31,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:31,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:09:31,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:09:31,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:31,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:09:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-14 21:09:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:32,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:32,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:09:32,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 21:09:32,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:32,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:09:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 182 proven. 19 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-14 21:09:32,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684294789] [2020-10-14 21:09:32,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:32,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:09:32,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381570787] [2020-10-14 21:09:32,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:09:32,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:09:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:09:32,619 INFO L87 Difference]: Start difference. First operand 37306 states and 48222 transitions. Second operand 6 states. [2020-10-14 21:09:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:55,656 INFO L93 Difference]: Finished difference Result 82032 states and 106426 transitions. [2020-10-14 21:09:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:09:55,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 348 [2020-10-14 21:09:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:55,832 INFO L225 Difference]: With dead ends: 82032 [2020-10-14 21:09:55,832 INFO L226 Difference]: Without dead ends: 44538 [2020-10-14 21:09:55,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56