/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/Problem18_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:15:43,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:15:43,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:15:43,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:15:43,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:15:43,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:15:43,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:15:43,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:15:43,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:15:43,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:15:43,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:15:43,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:15:43,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:15:43,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:15:43,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:15:43,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:15:43,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:15:43,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:15:43,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:15:43,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:15:43,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:15:43,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:15:43,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:15:43,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:15:43,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:15:43,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:15:43,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:15:43,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:15:43,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:15:43,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:15:43,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:15:43,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:15:43,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:15:43,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:15:43,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:15:43,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:15:43,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:15:43,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:15:43,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:15:43,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:15:43,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:15:43,790 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 04:15:43,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:15:43,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:15:43,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:15:43,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:15:43,850 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:15:43,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:15:43,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:15:43,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:15:43,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:15:43,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:15:43,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:15:43,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:15:43,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:15:43,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:15:43,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:15:43,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:15:43,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:15:43,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:15:43,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:15:43,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:15:43,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:15:43,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:15:43,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:15:43,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:15:43,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:15:43,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:15:43,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:15:43,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:15:43,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:15:43,856 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 04:15:44,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:15:44,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:15:44,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:15:44,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:15:44,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:15:44,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23.c [2020-10-14 04:15:44,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7c977c35/b6a29417b59b49dbac03972d8fe6e387/FLAG380739344 [2020-10-14 04:15:45,079 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:15:45,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label23.c [2020-10-14 04:15:45,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7c977c35/b6a29417b59b49dbac03972d8fe6e387/FLAG380739344 [2020-10-14 04:15:45,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7c977c35/b6a29417b59b49dbac03972d8fe6e387 [2020-10-14 04:15:45,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:15:45,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:15:45,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:15:45,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:15:45,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:15:45,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:15:45" (1/1) ... [2020-10-14 04:15:45,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea0c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:45, skipping insertion in model container [2020-10-14 04:15:45,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:15:45" (1/1) ... [2020-10-14 04:15:45,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:15:45,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:15:46,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:15:46,942 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:15:47,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:15:47,480 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:15:47,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47 WrapperNode [2020-10-14 04:15:47,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:15:47,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:15:47,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:15:47,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:15:47,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (1/1) ... [2020-10-14 04:15:47,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (1/1) ... [2020-10-14 04:15:47,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (1/1) ... [2020-10-14 04:15:47,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (1/1) ... [2020-10-14 04:15:47,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (1/1) ... [2020-10-14 04:15:47,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (1/1) ... [2020-10-14 04:15:47,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (1/1) ... [2020-10-14 04:15:47,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:15:47,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:15:47,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:15:47,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:15:47,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (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 04:15:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:15:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:15:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:15:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:15:47,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:15:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:15:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:15:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:15:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:15:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:15:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:15:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:15:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:15:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:15:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:15:54,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:15:54,057 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:15:54,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:15:54 BoogieIcfgContainer [2020-10-14 04:15:54,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:15:54,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:15:54,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:15:54,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:15:54,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:15:45" (1/3) ... [2020-10-14 04:15:54,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21726e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:15:54, skipping insertion in model container [2020-10-14 04:15:54,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:15:47" (2/3) ... [2020-10-14 04:15:54,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21726e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:15:54, skipping insertion in model container [2020-10-14 04:15:54,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:15:54" (3/3) ... [2020-10-14 04:15:54,106 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label23.c [2020-10-14 04:15:54,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:15:54,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:15:54,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:15:54,173 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:15:54,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:15:54,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:15:54,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:15:54,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:15:54,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:15:54,174 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:15:54,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:15:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:15:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 04:15:54,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:54,220 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] [2020-10-14 04:15:54,220 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1957259726, now seen corresponding path program 1 times [2020-10-14 04:15:54,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:54,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170566228] [2020-10-14 04:15:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:54,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:54,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 04:15:54,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:54,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-14 04:15:54,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:54,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:15:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 04:15:54,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:15:55,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:55,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:55,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:55,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:15:55,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:55,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:55,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:15:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:15:55,118 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 04:15:55,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170566228] [2020-10-14 04:15:55,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:15:55,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:15:55,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624712126] [2020-10-14 04:15:55,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:15:55,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:15:55,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:15:55,148 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:16:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:02,545 INFO L93 Difference]: Finished difference Result 2270 states and 4348 transitions. [2020-10-14 04:16:02,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:02,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-14 04:16:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:02,580 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:16:02,580 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:16:02,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 04:16:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:16:02,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2020-10-14 04:16:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-14 04:16:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2322 transitions. [2020-10-14 04:16:02,734 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2322 transitions. Word has length 61 [2020-10-14 04:16:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:02,735 INFO L479 AbstractCegarLoop]: Abstraction has 1428 states and 2322 transitions. [2020-10-14 04:16:02,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:16:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2322 transitions. [2020-10-14 04:16:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 04:16:02,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:02,744 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, 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 04:16:02,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:16:02,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:02,745 INFO L82 PathProgramCache]: Analyzing trace with hash 951649495, now seen corresponding path program 1 times [2020-10-14 04:16:02,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:02,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128316388] [2020-10-14 04:16:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:03,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:03,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 04:16:03,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:16:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-14 04:16:03,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:03,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:16:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:16:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:16:03,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:03,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:03,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:16:03,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:03,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:03,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:03,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:16:03,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:16:03,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:03,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:16:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:04,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128316388] [2020-10-14 04:16:04,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:04,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:16:04,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521019157] [2020-10-14 04:16:04,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:16:04,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:04,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:16:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:16:04,105 INFO L87 Difference]: Start difference. First operand 1428 states and 2322 transitions. Second operand 5 states. [2020-10-14 04:16:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:12,370 INFO L93 Difference]: Finished difference Result 3574 states and 6013 transitions. [2020-10-14 04:16:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:12,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 04:16:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:12,384 INFO L225 Difference]: With dead ends: 3574 [2020-10-14 04:16:12,385 INFO L226 Difference]: Without dead ends: 2152 [2020-10-14 04:16:12,389 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 04:16:12,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-10-14 04:16:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2146. [2020-10-14 04:16:12,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2146 states. [2020-10-14 04:16:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3312 transitions. [2020-10-14 04:16:12,454 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3312 transitions. Word has length 130 [2020-10-14 04:16:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:12,455 INFO L479 AbstractCegarLoop]: Abstraction has 2146 states and 3312 transitions. [2020-10-14 04:16:12,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:16:12,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3312 transitions. [2020-10-14 04:16:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 04:16:12,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:12,459 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, 1, 1, 1, 1, 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 04:16:12,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:16:12,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:12,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1280764575, now seen corresponding path program 1 times [2020-10-14 04:16:12,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:12,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788312084] [2020-10-14 04:16:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:13,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:13,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 04:16:13,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:16:13,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 04:16:13,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:13,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 04:16:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:16:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:16:13,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:13,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:13,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:13,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:16:13,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:13,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:13,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:16:13,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:16:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:13,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:13,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:16:13,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:13,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788312084] [2020-10-14 04:16:13,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:13,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:16:13,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985608089] [2020-10-14 04:16:13,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:16:13,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:13,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:16:13,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:16:13,416 INFO L87 Difference]: Start difference. First operand 2146 states and 3312 transitions. Second operand 6 states. [2020-10-14 04:16:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:24,826 INFO L93 Difference]: Finished difference Result 8554 states and 13440 transitions. [2020-10-14 04:16:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:16:24,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-14 04:16:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:24,866 INFO L225 Difference]: With dead ends: 8554 [2020-10-14 04:16:24,866 INFO L226 Difference]: Without dead ends: 6414 [2020-10-14 04:16:24,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:16:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2020-10-14 04:16:25,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 6410. [2020-10-14 04:16:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6410 states. [2020-10-14 04:16:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6410 states to 6410 states and 8957 transitions. [2020-10-14 04:16:25,072 INFO L78 Accepts]: Start accepts. Automaton has 6410 states and 8957 transitions. Word has length 134 [2020-10-14 04:16:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:25,073 INFO L479 AbstractCegarLoop]: Abstraction has 6410 states and 8957 transitions. [2020-10-14 04:16:25,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:16:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6410 states and 8957 transitions. [2020-10-14 04:16:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 04:16:25,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:25,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:25,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:16:25,088 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1623605695, now seen corresponding path program 1 times [2020-10-14 04:16:25,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:25,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146560957] [2020-10-14 04:16:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:25,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:25,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:16:25,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:16:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-14 04:16:25,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:25,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:16:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:16:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 04:16:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:25,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:25,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:25,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:25,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:16:25,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:25,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:26,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:26,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:26,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:16:26,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 04:16:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:26,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:16:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:26,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146560957] [2020-10-14 04:16:26,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:26,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:16:26,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133724818] [2020-10-14 04:16:26,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:16:26,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:26,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:16:26,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:16:26,270 INFO L87 Difference]: Start difference. First operand 6410 states and 8957 transitions. Second operand 5 states. [2020-10-14 04:16:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:35,347 INFO L93 Difference]: Finished difference Result 19205 states and 27307 transitions. [2020-10-14 04:16:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:35,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-14 04:16:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:35,417 INFO L225 Difference]: With dead ends: 19205 [2020-10-14 04:16:35,417 INFO L226 Difference]: Without dead ends: 12801 [2020-10-14 04:16:35,438 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 04:16:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12801 states. [2020-10-14 04:16:35,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12801 to 12797. [2020-10-14 04:16:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12797 states. [2020-10-14 04:16:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12797 states to 12797 states and 17830 transitions. [2020-10-14 04:16:35,871 INFO L78 Accepts]: Start accepts. Automaton has 12797 states and 17830 transitions. Word has length 150 [2020-10-14 04:16:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:35,873 INFO L479 AbstractCegarLoop]: Abstraction has 12797 states and 17830 transitions. [2020-10-14 04:16:35,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:16:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 12797 states and 17830 transitions. [2020-10-14 04:16:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 04:16:35,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:35,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:35,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:16:35,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1683297734, now seen corresponding path program 1 times [2020-10-14 04:16:35,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:35,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669225755] [2020-10-14 04:16:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:37,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:37,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 04:16:37,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:16:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-14 04:16:37,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:37,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-14 04:16:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:16:37,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:37,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:37,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:16:37,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:37,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:37,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:37,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:16:37,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:16:37,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:37,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 04:16:37,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:16:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:16:37,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669225755] [2020-10-14 04:16:37,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:37,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:16:37,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454934892] [2020-10-14 04:16:37,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:16:37,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:37,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:16:37,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:16:37,576 INFO L87 Difference]: Start difference. First operand 12797 states and 17830 transitions. Second operand 5 states. [2020-10-14 04:16:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:49,727 INFO L93 Difference]: Finished difference Result 36928 states and 52661 transitions. [2020-10-14 04:16:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:16:49,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-14 04:16:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:49,831 INFO L225 Difference]: With dead ends: 36928 [2020-10-14 04:16:49,831 INFO L226 Difference]: Without dead ends: 24137 [2020-10-14 04:16:49,862 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 04:16:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24137 states. [2020-10-14 04:16:50,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24137 to 24133. [2020-10-14 04:16:50,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24133 states. [2020-10-14 04:16:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24133 states to 24133 states and 31730 transitions. [2020-10-14 04:16:50,523 INFO L78 Accepts]: Start accepts. Automaton has 24133 states and 31730 transitions. Word has length 235 [2020-10-14 04:16:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:50,524 INFO L479 AbstractCegarLoop]: Abstraction has 24133 states and 31730 transitions. [2020-10-14 04:16:50,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:16:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 24133 states and 31730 transitions. [2020-10-14 04:16:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 04:16:50,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:50,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2020-10-14 04:16:50,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:16:50,535 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:50,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1107221547, now seen corresponding path program 1 times [2020-10-14 04:16:50,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:50,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819564424] [2020-10-14 04:16:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:53,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:53,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 04:16:53,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:16:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-10-14 04:16:53,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:53,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:16:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:16:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:53,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:53,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:53,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:53,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:16:53,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:53,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:53,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:53,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:16:53,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 04:16:53,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:53,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:16:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 04:16:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:54,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:16:54,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:16:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:54,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:16:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:16:54,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819564424] [2020-10-14 04:16:54,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:54,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:16:54,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512269249] [2020-10-14 04:16:54,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:16:54,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:54,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:16:54,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:16:54,255 INFO L87 Difference]: Start difference. First operand 24133 states and 31730 transitions. Second operand 8 states. [2020-10-14 04:17:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:13,988 INFO L93 Difference]: Finished difference Result 67753 states and 92448 transitions. [2020-10-14 04:17:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:17:13,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-10-14 04:17:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:14,156 INFO L225 Difference]: With dead ends: 67753 [2020-10-14 04:17:14,156 INFO L226 Difference]: Without dead ends: 43626 [2020-10-14 04:17:14,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:17:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43626 states. [2020-10-14 04:17:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43626 to 43466. [2020-10-14 04:17:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43466 states. [2020-10-14 04:17:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43466 states to 43466 states and 57151 transitions. [2020-10-14 04:17:15,073 INFO L78 Accepts]: Start accepts. Automaton has 43466 states and 57151 transitions. Word has length 240 [2020-10-14 04:17:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:15,074 INFO L479 AbstractCegarLoop]: Abstraction has 43466 states and 57151 transitions. [2020-10-14 04:17:15,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:17:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 43466 states and 57151 transitions. [2020-10-14 04:17:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 04:17:15,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:15,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:17:15,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:17:15,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:15,090 INFO L82 PathProgramCache]: Analyzing trace with hash -518119982, now seen corresponding path program 1 times [2020-10-14 04:17:15,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:15,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245254691] [2020-10-14 04:17:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:15,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:20,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:20,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 04:17:20,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:17:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-14 04:17:20,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:20,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:17:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:17:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:20,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:20,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:20,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:20,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:20,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:20,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:20,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:17:20,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:17:20,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:20,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:17:20,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:20,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:17:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:20,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:20,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:17:20,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:20,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 04:17:20,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:20,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:17:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:17:20,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245254691] [2020-10-14 04:17:20,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:20,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:20,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207866482] [2020-10-14 04:17:20,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:20,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:20,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:20,704 INFO L87 Difference]: Start difference. First operand 43466 states and 57151 transitions. Second operand 7 states. [2020-10-14 04:17:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:43,662 INFO L93 Difference]: Finished difference Result 98606 states and 133998 transitions. [2020-10-14 04:17:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:17:43,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-14 04:17:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:43,896 INFO L225 Difference]: With dead ends: 98606 [2020-10-14 04:17:43,897 INFO L226 Difference]: Without dead ends: 55178 [2020-10-14 04:17:43,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 04:17:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55178 states. [2020-10-14 04:17:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55178 to 54974. [2020-10-14 04:17:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54974 states. [2020-10-14 04:17:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54974 states to 54974 states and 72645 transitions. [2020-10-14 04:17:44,843 INFO L78 Accepts]: Start accepts. Automaton has 54974 states and 72645 transitions. Word has length 245 [2020-10-14 04:17:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:44,844 INFO L479 AbstractCegarLoop]: Abstraction has 54974 states and 72645 transitions. [2020-10-14 04:17:44,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:17:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 54974 states and 72645 transitions. [2020-10-14 04:17:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 04:17:44,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:44,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:17:44,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:17:44,858 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:44,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:44,859 INFO L82 PathProgramCache]: Analyzing trace with hash -921662346, now seen corresponding path program 1 times [2020-10-14 04:17:44,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:44,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082110786] [2020-10-14 04:17:44,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:48,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:48,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 04:17:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:17:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3731 [2020-10-14 04:17:48,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:48,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:17:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:17:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 04:17:48,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:17:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:48,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:48,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:17:48,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:17:48,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:48,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:48,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:17:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 04:17:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:49,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:49,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:17:49,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 04:17:49,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:49,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:17:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:17:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:17:49,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082110786] [2020-10-14 04:17:49,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:49,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:17:49,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170254050] [2020-10-14 04:17:49,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:17:49,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:49,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:17:49,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:17:49,253 INFO L87 Difference]: Start difference. First operand 54974 states and 72645 transitions. Second operand 7 states. [2020-10-14 04:18:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:01,128 INFO L93 Difference]: Finished difference Result 112360 states and 154102 transitions. [2020-10-14 04:18:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:18:01,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 04:18:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:01,265 INFO L225 Difference]: With dead ends: 112360 [2020-10-14 04:18:01,266 INFO L226 Difference]: Without dead ends: 50953 [2020-10-14 04:18:01,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:18:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50953 states. [2020-10-14 04:18:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50953 to 48783. [2020-10-14 04:18:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48783 states. [2020-10-14 04:18:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48783 states to 48783 states and 58102 transitions. [2020-10-14 04:18:02,025 INFO L78 Accepts]: Start accepts. Automaton has 48783 states and 58102 transitions. Word has length 247 [2020-10-14 04:18:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:02,026 INFO L479 AbstractCegarLoop]: Abstraction has 48783 states and 58102 transitions. [2020-10-14 04:18:02,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 48783 states and 58102 transitions. [2020-10-14 04:18:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 04:18:02,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:02,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:18:02,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:18:02,034 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:02,035 INFO L82 PathProgramCache]: Analyzing trace with hash -481827909, now seen corresponding path program 1 times [2020-10-14 04:18:02,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:02,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180215151] [2020-10-14 04:18:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:02,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 04:18:04,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:18:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2760 [2020-10-14 04:18:04,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:18:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:18:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:04,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:04,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:04,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:18:04,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:18:04,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:18:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 04:18:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:05,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:18:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:18:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:05,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:18:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:18:05,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180215151] [2020-10-14 04:18:05,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:05,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:05,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008664763] [2020-10-14 04:18:05,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:05,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:05,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:05,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:05,319 INFO L87 Difference]: Start difference. First operand 48783 states and 58102 transitions. Second operand 7 states. [2020-10-14 04:18:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:17,359 INFO L93 Difference]: Finished difference Result 111118 states and 133657 transitions. [2020-10-14 04:18:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:18:17,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 04:18:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:17,491 INFO L225 Difference]: With dead ends: 111118 [2020-10-14 04:18:17,492 INFO L226 Difference]: Without dead ends: 63749 [2020-10-14 04:18:17,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:18:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63749 states. [2020-10-14 04:18:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63749 to 62283. [2020-10-14 04:18:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62283 states. [2020-10-14 04:18:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62283 states to 62283 states and 72558 transitions. [2020-10-14 04:18:18,678 INFO L78 Accepts]: Start accepts. Automaton has 62283 states and 72558 transitions. Word has length 248 [2020-10-14 04:18:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:18,678 INFO L479 AbstractCegarLoop]: Abstraction has 62283 states and 72558 transitions. [2020-10-14 04:18:18,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 62283 states and 72558 transitions. [2020-10-14 04:18:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-14 04:18:18,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:18,693 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:18,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:18:18,693 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:18,694 INFO L82 PathProgramCache]: Analyzing trace with hash -572908818, now seen corresponding path program 1 times [2020-10-14 04:18:18,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:18,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401638711] [2020-10-14 04:18:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:18,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:23,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:23,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 04:18:23,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:18:23,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 04:18:23,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:23,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-14 04:18:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:18:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:23,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:23,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:23,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:18:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:23,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:23,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:23,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:18:23,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:18:23,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:23,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:18:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:23,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:23,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:18:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-14 04:18:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:24,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:24,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:18:24,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:18:24,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:24,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:18:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 04:18:24,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401638711] [2020-10-14 04:18:24,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:24,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:24,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361488161] [2020-10-14 04:18:24,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:24,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:24,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:24,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:24,163 INFO L87 Difference]: Start difference. First operand 62283 states and 72558 transitions. Second operand 7 states. [2020-10-14 04:18:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:34,032 INFO L93 Difference]: Finished difference Result 133143 states and 156233 transitions. [2020-10-14 04:18:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:18:34,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-14 04:18:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:34,182 INFO L225 Difference]: With dead ends: 133143 [2020-10-14 04:18:34,182 INFO L226 Difference]: Without dead ends: 72278 [2020-10-14 04:18:34,250 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 04:18:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72278 states. [2020-10-14 04:18:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72278 to 70112. [2020-10-14 04:18:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70112 states. [2020-10-14 04:18:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70112 states to 70112 states and 81341 transitions. [2020-10-14 04:18:35,409 INFO L78 Accepts]: Start accepts. Automaton has 70112 states and 81341 transitions. Word has length 327 [2020-10-14 04:18:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:35,410 INFO L479 AbstractCegarLoop]: Abstraction has 70112 states and 81341 transitions. [2020-10-14 04:18:35,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 70112 states and 81341 transitions. [2020-10-14 04:18:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 04:18:35,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:35,421 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:35,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:18:35,422 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash -245125598, now seen corresponding path program 1 times [2020-10-14 04:18:35,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:35,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34049640] [2020-10-14 04:18:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:35,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:40,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:40,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 04:18:40,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:18:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:18:40,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:40,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:18:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:18:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:40,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:40,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:40,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:40,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:40,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:40,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:18:40,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:18:40,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:40,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:18:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:18:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:40,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:40,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:18:40,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 04:18:40,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:40,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:40,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:18:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-14 04:18:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:41,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:41,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:18:41,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:41,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:18:41,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:41,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:18:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 235 proven. 97 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:18:41,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34049640] [2020-10-14 04:18:41,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:41,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:41,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063963985] [2020-10-14 04:18:41,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:41,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:41,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:41,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:41,305 INFO L87 Difference]: Start difference. First operand 70112 states and 81341 transitions. Second operand 7 states. [2020-10-14 04:18:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:51,849 INFO L93 Difference]: Finished difference Result 139287 states and 165906 transitions. [2020-10-14 04:18:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:18:51,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 04:18:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:52,018 INFO L225 Difference]: With dead ends: 139287 [2020-10-14 04:18:52,018 INFO L226 Difference]: Without dead ends: 70593 [2020-10-14 04:18:52,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:18:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70593 states. [2020-10-14 04:18:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70593 to 70140. [2020-10-14 04:18:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70140 states. [2020-10-14 04:18:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70140 states to 70140 states and 81369 transitions. [2020-10-14 04:18:53,161 INFO L78 Accepts]: Start accepts. Automaton has 70140 states and 81369 transitions. Word has length 337 [2020-10-14 04:18:53,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:53,162 INFO L479 AbstractCegarLoop]: Abstraction has 70140 states and 81369 transitions. [2020-10-14 04:18:53,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 70140 states and 81369 transitions. [2020-10-14 04:18:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-14 04:18:53,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:53,174 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, 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] [2020-10-14 04:18:53,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:18:53,174 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2104697638, now seen corresponding path program 1 times [2020-10-14 04:18:53,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:53,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966390884] [2020-10-14 04:18:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:58,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:58,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-14 04:18:58,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:18:58,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 04:18:58,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:58,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:18:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:18:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:58,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:58,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:58,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:18:58,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:58,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:58,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:58,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:58,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:18:58,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:18:58,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:58,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:18:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:18:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:58,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:18:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:18:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:58,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:18:58,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:18:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:58,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:18:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 269 proven. 97 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 04:18:58,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966390884] [2020-10-14 04:18:58,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:58,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:58,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380331007] [2020-10-14 04:18:58,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:58,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:58,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:58,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:58,770 INFO L87 Difference]: Start difference. First operand 70140 states and 81369 transitions. Second operand 7 states. [2020-10-14 04:19:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:11,075 INFO L93 Difference]: Finished difference Result 156744 states and 184746 transitions. [2020-10-14 04:19:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:19:11,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-14 04:19:11,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:11,250 INFO L225 Difference]: With dead ends: 156744 [2020-10-14 04:19:11,250 INFO L226 Difference]: Without dead ends: 88022 [2020-10-14 04:19:11,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 04:19:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88022 states. [2020-10-14 04:19:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88022 to 87272. [2020-10-14 04:19:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87272 states. [2020-10-14 04:19:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87272 states to 87272 states and 100497 transitions. [2020-10-14 04:19:12,265 INFO L78 Accepts]: Start accepts. Automaton has 87272 states and 100497 transitions. Word has length 387 [2020-10-14 04:19:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:12,265 INFO L479 AbstractCegarLoop]: Abstraction has 87272 states and 100497 transitions. [2020-10-14 04:19:12,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:19:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 87272 states and 100497 transitions. [2020-10-14 04:19:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-14 04:19:12,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:12,275 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:12,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:19:12,275 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1822849494, now seen corresponding path program 1 times [2020-10-14 04:19:12,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:12,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261977810] [2020-10-14 04:19:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-14 04:19:17,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:19:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:19:17,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:19:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 04:19:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:17,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:17,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:19:17,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:19:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:19:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 04:19:17,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 04:19:17,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:17,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:17,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 04:19:17,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-14 04:19:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:19:17,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:19:17,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:19:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 235 proven. 97 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:19:19,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261977810] [2020-10-14 04:19:19,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:19,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:19:19,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502823997] [2020-10-14 04:19:19,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:19:19,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:19,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:19:19,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:19:19,564 INFO L87 Difference]: Start difference. First operand 87272 states and 100497 transitions. Second operand 8 states.