/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:10:56,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:10:56,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:10:56,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:10:56,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:10:56,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:10:56,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:10:56,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:10:56,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:10:56,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:10:56,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:10:56,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:10:56,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:10:56,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:10:56,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:10:56,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:10:56,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:10:56,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:10:56,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:10:56,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:10:56,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:10:56,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:10:56,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:10:56,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:10:56,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:10:56,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:10:56,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:10:56,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:10:56,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:10:56,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:10:56,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:10:56,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:10:56,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:10:56,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:10:56,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:10:56,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:10:56,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:10:56,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:10:56,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:10:56,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:10:56,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:10:56,127 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 03:10:56,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:10:56,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:10:56,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:10:56,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:10:56,170 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:10:56,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:10:56,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:10:56,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:10:56,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:10:56,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:10:56,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:10:56,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:10:56,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:10:56,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:10:56,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:10:56,174 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:10:56,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:10:56,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:10:56,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:10:56,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:10:56,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:10:56,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:10:56,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:10:56,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:10:56,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:10:56,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:10:56,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:10:56,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:10:56,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:10:56,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:10:56,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:10:56,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:10:56,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:10:56,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:10:56,609 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:10:56,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2020-10-14 03:10:56,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd66ed44c/f2044b144b754e3bb4e7935e254004ea/FLAG2f883799e [2020-10-14 03:10:57,575 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:10:57,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2020-10-14 03:10:57,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd66ed44c/f2044b144b754e3bb4e7935e254004ea/FLAG2f883799e [2020-10-14 03:10:57,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd66ed44c/f2044b144b754e3bb4e7935e254004ea [2020-10-14 03:10:57,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:10:57,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:10:57,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:10:57,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:10:57,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:10:57,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:10:57" (1/1) ... [2020-10-14 03:10:57,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa97df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:10:57, skipping insertion in model container [2020-10-14 03:10:57,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:10:57" (1/1) ... [2020-10-14 03:10:57,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:10:57,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:10:59,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:10:59,967 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:11:00,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:11:01,022 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:11:01,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01 WrapperNode [2020-10-14 03:11:01,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:11:01,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:11:01,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:11:01,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:11:01,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (1/1) ... [2020-10-14 03:11:01,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (1/1) ... [2020-10-14 03:11:01,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (1/1) ... [2020-10-14 03:11:01,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (1/1) ... [2020-10-14 03:11:01,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (1/1) ... [2020-10-14 03:11:01,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (1/1) ... [2020-10-14 03:11:01,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (1/1) ... [2020-10-14 03:11:01,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:11:01,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:11:01,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:11:01,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:11:01,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (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 03:11:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:11:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:11:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:11:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:11:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:11:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:11:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:11:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:11:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:11:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:11:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:11:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:11:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:11:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:11:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:11:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:11:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:11:13,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:11:13,981 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:11:14,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:11:14 BoogieIcfgContainer [2020-10-14 03:11:14,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:11:14,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:11:14,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:11:14,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:11:14,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:10:57" (1/3) ... [2020-10-14 03:11:14,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49033a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:11:14, skipping insertion in model container [2020-10-14 03:11:14,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:11:01" (2/3) ... [2020-10-14 03:11:14,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49033a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:11:14, skipping insertion in model container [2020-10-14 03:11:14,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:11:14" (3/3) ... [2020-10-14 03:11:14,022 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2020-10-14 03:11:14,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:11:14,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:11:14,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:11:14,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:11:14,107 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:11:14,107 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:11:14,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:11:14,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:11:14,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:11:14,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:11:14,108 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:11:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:11:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 03:11:14,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:14,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:11:14,173 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:14,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1357052199, now seen corresponding path program 1 times [2020-10-14 03:11:14,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:14,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882448909] [2020-10-14 03:11:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:14,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:14,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:11:14,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:14,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-14 03:11:15,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:15,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:11:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:11:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:11:15,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:11:15,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:15,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:15,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 03:11:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:15,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:11:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:15,238 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 03:11:15,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882448909] [2020-10-14 03:11:15,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:11:15,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:11:15,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129865751] [2020-10-14 03:11:15,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:15,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:15,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:15,276 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:11:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:38,197 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-14 03:11:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:11:38,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-14 03:11:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:38,268 INFO L225 Difference]: With dead ends: 4080 [2020-10-14 03:11:38,268 INFO L226 Difference]: Without dead ends: 2872 [2020-10-14 03:11:38,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:11:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-14 03:11:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-14 03:11:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-14 03:11:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-14 03:11:38,498 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 70 [2020-10-14 03:11:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:38,500 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-14 03:11:38,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-14 03:11:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 03:11:38,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:38,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:11:38,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:11:38,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:38,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1324242365, now seen corresponding path program 1 times [2020-10-14 03:11:38,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:38,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473582020] [2020-10-14 03:11:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:41,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:41,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:11:41,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:11:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2505 [2020-10-14 03:11:41,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:41,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:41,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:11:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:11:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 03:11:41,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:41,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:11:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:41,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:41,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:41,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:41,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:11:41,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 03:11:41,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:41,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:11:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:41,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473582020] [2020-10-14 03:11:41,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:41,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:11:41,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628040235] [2020-10-14 03:11:41,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:41,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:41,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:41,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:41,456 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 5 states. [2020-10-14 03:12:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:02,310 INFO L93 Difference]: Finished difference Result 5534 states and 9188 transitions. [2020-10-14 03:12:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:12:02,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 03:12:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:02,338 INFO L225 Difference]: With dead ends: 5534 [2020-10-14 03:12:02,338 INFO L226 Difference]: Without dead ends: 3606 [2020-10-14 03:12:02,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:12:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2020-10-14 03:12:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3582. [2020-10-14 03:12:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3582 states. [2020-10-14 03:12:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 5169 transitions. [2020-10-14 03:12:02,453 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 5169 transitions. Word has length 145 [2020-10-14 03:12:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:02,454 INFO L479 AbstractCegarLoop]: Abstraction has 3582 states and 5169 transitions. [2020-10-14 03:12:02,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:12:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 5169 transitions. [2020-10-14 03:12:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 03:12:02,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:02,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:12:02,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:12:02,460 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:02,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1637213729, now seen corresponding path program 1 times [2020-10-14 03:12:02,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:02,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884107020] [2020-10-14 03:12:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:02,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:02,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:03,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:04,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:12:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:12:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2184 [2020-10-14 03:12:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:04,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:12:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:12:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:04,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:04,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:04,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:12:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:04,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:04,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:04,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:04,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:12:04,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 03:12:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:04,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 03:12:04,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:12:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:12:05,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884107020] [2020-10-14 03:12:05,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:12:05,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:12:05,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914897431] [2020-10-14 03:12:05,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:12:05,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:05,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:12:05,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:12:05,048 INFO L87 Difference]: Start difference. First operand 3582 states and 5169 transitions. Second operand 5 states. [2020-10-14 03:12:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:29,144 INFO L93 Difference]: Finished difference Result 10510 states and 15437 transitions. [2020-10-14 03:12:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:12:29,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 03:12:29,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:29,197 INFO L225 Difference]: With dead ends: 10510 [2020-10-14 03:12:29,197 INFO L226 Difference]: Without dead ends: 6934 [2020-10-14 03:12:29,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:12:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2020-10-14 03:12:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6882. [2020-10-14 03:12:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6882 states. [2020-10-14 03:12:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6882 states to 6882 states and 9715 transitions. [2020-10-14 03:12:29,505 INFO L78 Accepts]: Start accepts. Automaton has 6882 states and 9715 transitions. Word has length 152 [2020-10-14 03:12:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:29,508 INFO L479 AbstractCegarLoop]: Abstraction has 6882 states and 9715 transitions. [2020-10-14 03:12:29,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:12:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6882 states and 9715 transitions. [2020-10-14 03:12:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 03:12:29,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:29,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:12:29,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:12:29,519 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:29,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:29,519 INFO L82 PathProgramCache]: Analyzing trace with hash -313100593, now seen corresponding path program 1 times [2020-10-14 03:12:29,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:29,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028061369] [2020-10-14 03:12:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:31,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 03:12:31,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:12:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1753 [2020-10-14 03:12:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:31,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 03:12:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:12:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:31,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:31,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:31,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:31,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:12:31,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:31,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:31,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:31,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:31,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:12:31,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:12:31,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:31,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:12:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:12:31,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028061369] [2020-10-14 03:12:31,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:31,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:12:31,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650690646] [2020-10-14 03:12:31,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:12:31,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:31,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:12:31,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:12:31,708 INFO L87 Difference]: Start difference. First operand 6882 states and 9715 transitions. Second operand 5 states. [2020-10-14 03:12:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:53,862 INFO L93 Difference]: Finished difference Result 17045 states and 25069 transitions. [2020-10-14 03:12:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:12:53,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 03:12:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:53,938 INFO L225 Difference]: With dead ends: 17045 [2020-10-14 03:12:53,939 INFO L226 Difference]: Without dead ends: 10169 [2020-10-14 03:12:53,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:12:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10169 states. [2020-10-14 03:12:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10169 to 10149. [2020-10-14 03:12:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10149 states. [2020-10-14 03:12:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10149 states to 10149 states and 13734 transitions. [2020-10-14 03:12:54,313 INFO L78 Accepts]: Start accepts. Automaton has 10149 states and 13734 transitions. Word has length 171 [2020-10-14 03:12:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:54,314 INFO L479 AbstractCegarLoop]: Abstraction has 10149 states and 13734 transitions. [2020-10-14 03:12:54,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:12:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 10149 states and 13734 transitions. [2020-10-14 03:12:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 03:12:54,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:54,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:12:54,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:12:54,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:54,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1713998204, now seen corresponding path program 1 times [2020-10-14 03:12:54,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:54,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278283570] [2020-10-14 03:12:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 03:12:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:12:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-14 03:12:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:55,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:12:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:12:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:55,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:55,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:12:55,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:55,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:55,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:55,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 03:12:55,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:12:55,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:55,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:12:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:12:55,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278283570] [2020-10-14 03:12:55,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:55,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:12:55,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435054932] [2020-10-14 03:12:55,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:12:55,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:55,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:12:55,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:12:55,779 INFO L87 Difference]: Start difference. First operand 10149 states and 13734 transitions. Second operand 5 states. [2020-10-14 03:13:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:17,888 INFO L93 Difference]: Finished difference Result 30043 states and 41876 transitions. [2020-10-14 03:13:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:17,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 03:13:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:17,957 INFO L225 Difference]: With dead ends: 30043 [2020-10-14 03:13:17,958 INFO L226 Difference]: Without dead ends: 19900 [2020-10-14 03:13:17,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:13:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19900 states. [2020-10-14 03:13:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19900 to 19895. [2020-10-14 03:13:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19895 states. [2020-10-14 03:13:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19895 states to 19895 states and 25240 transitions. [2020-10-14 03:13:18,468 INFO L78 Accepts]: Start accepts. Automaton has 19895 states and 25240 transitions. Word has length 188 [2020-10-14 03:13:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:18,469 INFO L479 AbstractCegarLoop]: Abstraction has 19895 states and 25240 transitions. [2020-10-14 03:13:18,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 19895 states and 25240 transitions. [2020-10-14 03:13:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 03:13:18,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:18,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:13:18,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:13:18,483 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:18,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1119824680, now seen corresponding path program 1 times [2020-10-14 03:13:18,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:18,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060990028] [2020-10-14 03:13:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:20,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:20,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 03:13:20,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:13:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1814 [2020-10-14 03:13:20,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:20,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-14 03:13:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:13:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:20,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:20,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:20,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:20,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:20,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:13:20,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:20,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:13:20,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:13:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:20,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:20,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 03:13:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 03:13:20,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:20,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 03:13:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:20,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060990028] [2020-10-14 03:13:20,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:13:20,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:13:20,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194172006] [2020-10-14 03:13:20,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:13:20,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:20,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:13:20,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:13:20,961 INFO L87 Difference]: Start difference. First operand 19895 states and 25240 transitions. Second operand 5 states. [2020-10-14 03:13:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:13:44,814 INFO L93 Difference]: Finished difference Result 58461 states and 76444 transitions. [2020-10-14 03:13:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:13:44,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-14 03:13:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:13:44,986 INFO L225 Difference]: With dead ends: 58461 [2020-10-14 03:13:44,986 INFO L226 Difference]: Without dead ends: 38572 [2020-10-14 03:13:45,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:13:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38572 states. [2020-10-14 03:13:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38572 to 29730. [2020-10-14 03:13:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29730 states. [2020-10-14 03:13:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29730 states to 29730 states and 38896 transitions. [2020-10-14 03:13:45,873 INFO L78 Accepts]: Start accepts. Automaton has 29730 states and 38896 transitions. Word has length 261 [2020-10-14 03:13:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:13:45,874 INFO L479 AbstractCegarLoop]: Abstraction has 29730 states and 38896 transitions. [2020-10-14 03:13:45,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:13:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 29730 states and 38896 transitions. [2020-10-14 03:13:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 03:13:45,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:13:45,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:13:45,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:13:45,889 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:13:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:13:45,889 INFO L82 PathProgramCache]: Analyzing trace with hash -467054860, now seen corresponding path program 1 times [2020-10-14 03:13:45,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:13:45,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910928135] [2020-10-14 03:13:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:13:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:46,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:46,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 03:13:46,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-14 03:13:46,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:46,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:13:46,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:13:46,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 03:13:46,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:46,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:13:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:46,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:46,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:13:46,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:13:46,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:46,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:13:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:13:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:13:46,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:13:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:13:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:13:47,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:13:47,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:13:47,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:13:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 03:13:47,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:13:47,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:13:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:13:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:13:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 03:13:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:13:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:13:48,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910928135] [2020-10-14 03:13:48,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:13:48,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:13:48,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814329006] [2020-10-14 03:13:48,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:13:48,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:13:48,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:13:48,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:13:48,499 INFO L87 Difference]: Start difference. First operand 29730 states and 38896 transitions. Second operand 7 states. [2020-10-14 03:14:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:14:13,730 INFO L93 Difference]: Finished difference Result 69694 states and 93017 transitions. [2020-10-14 03:14:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:14:13,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 03:14:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:14:13,871 INFO L225 Difference]: With dead ends: 69694 [2020-10-14 03:14:13,872 INFO L226 Difference]: Without dead ends: 36681 [2020-10-14 03:14:13,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:14:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36681 states. [2020-10-14 03:14:14,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36681 to 31787. [2020-10-14 03:14:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31787 states. [2020-10-14 03:14:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31787 states to 31787 states and 39701 transitions. [2020-10-14 03:14:14,633 INFO L78 Accepts]: Start accepts. Automaton has 31787 states and 39701 transitions. Word has length 263 [2020-10-14 03:14:14,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:14:14,634 INFO L479 AbstractCegarLoop]: Abstraction has 31787 states and 39701 transitions. [2020-10-14 03:14:14,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:14:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 31787 states and 39701 transitions. [2020-10-14 03:14:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 03:14:14,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:14:14,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 03:14:14,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:14:14,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:14:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:14:14,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1029449412, now seen corresponding path program 1 times [2020-10-14 03:14:14,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:14:14,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972549521] [2020-10-14 03:14:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:14:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:14,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:15,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:15,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:19,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:19,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 03:14:19,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:14:19,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 03:14:19,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:19,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:19,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:19,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-14 03:14:19,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 03:14:19,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:19,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:14:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:14:19,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:14:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:19,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:14:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:20,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:20,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:14:20,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 03:14:20,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:20,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:14:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:20,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:14:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:14:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:20,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:20,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:14:20,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:20,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 03:14:20,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:20,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:14:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:14:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:14:20,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:20,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-14 03:14:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:14:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:14:20,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:14:20,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:14:20,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:14:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 03:14:20,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:14:20,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:14:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:14:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:14:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 03:14:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:14:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 03:14:20,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972549521] [2020-10-14 03:14:20,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:14:20,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:14:20,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325404589] [2020-10-14 03:14:20,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:14:20,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:14:20,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:14:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:14:20,633 INFO L87 Difference]: Start difference. First operand 31787 states and 39701 transitions. Second operand 8 states.