/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:04:03,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:04:03,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:04:03,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:04:03,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:04:03,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:04:03,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:04:03,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:04:03,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:04:03,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:04:03,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:04:03,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:04:03,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:04:03,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:04:03,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:04:03,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:04:03,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:04:03,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:04:03,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:04:03,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:04:03,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:04:03,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:04:03,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:04:03,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:04:03,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:04:03,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:04:03,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:04:03,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:04:03,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:04:03,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:04:03,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:04:03,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:04:03,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:04:03,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:04:03,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:04:03,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:04:03,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:04:03,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:04:03,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:04:03,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:04:03,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:04:03,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:04:03,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:04:03,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:04:03,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:04:03,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:04:03,746 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:04:03,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:04:03,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:04:03,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:04:03,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:04:03,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:04:03,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:04:03,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:04:03,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:04:03,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:04:03,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:04:03,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:04:03,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:04:03,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:04:03,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:04:03,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:04:03,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:04:03,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:04:03,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:04:03,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:04:03,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:04:03,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:04:03,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:04:03,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:04:03,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:04:03,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:04:04,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:04:04,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:04:04,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:04:04,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:04:04,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:04:04,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2020-10-14 03:04:04,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b6bfaf5/48feded7aab145ffb4a31fde9b8a8235/FLAGab3891fab [2020-10-14 03:04:05,164 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:04:05,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2020-10-14 03:04:05,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b6bfaf5/48feded7aab145ffb4a31fde9b8a8235/FLAGab3891fab [2020-10-14 03:04:05,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b6bfaf5/48feded7aab145ffb4a31fde9b8a8235 [2020-10-14 03:04:05,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:04:05,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:04:05,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:04:05,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:04:05,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:04:05,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:04:05" (1/1) ... [2020-10-14 03:04:05,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36801391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:05, skipping insertion in model container [2020-10-14 03:04:05,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:04:05" (1/1) ... [2020-10-14 03:04:05,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:04:05,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:04:07,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:04:07,643 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:04:08,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:04:08,595 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:04:08,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08 WrapperNode [2020-10-14 03:04:08,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:04:08,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:04:08,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:04:08,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:04:08,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... [2020-10-14 03:04:08,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... [2020-10-14 03:04:08,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... [2020-10-14 03:04:08,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... [2020-10-14 03:04:08,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... [2020-10-14 03:04:08,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... [2020-10-14 03:04:08,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... [2020-10-14 03:04:09,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:04:09,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:04:09,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:04:09,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:04:09,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:04:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:04:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:04:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:04:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:04:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:04:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:04:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:04:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:04:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:04:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:04:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:04:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:04:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:04:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:04:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:04:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:04:09,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:04:20,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:04:20,985 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:04:21,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:04:20 BoogieIcfgContainer [2020-10-14 03:04:21,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:04:21,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:04:21,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:04:21,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:04:21,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:04:05" (1/3) ... [2020-10-14 03:04:21,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66458ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:04:21, skipping insertion in model container [2020-10-14 03:04:21,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:04:08" (2/3) ... [2020-10-14 03:04:21,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66458ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:04:21, skipping insertion in model container [2020-10-14 03:04:21,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:04:20" (3/3) ... [2020-10-14 03:04:21,010 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2020-10-14 03:04:21,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:04:21,032 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:04:21,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:04:21,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:04:21,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:04:21,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:04:21,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:04:21,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:04:21,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:04:21,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:04:21,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:04:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:04:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 03:04:21,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:21,134 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] [2020-10-14 03:04:21,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1734538977, now seen corresponding path program 1 times [2020-10-14 03:04:21,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:21,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615959104] [2020-10-14 03:04:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:21,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:21,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 03:04:21,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-14 03:04:21,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:21,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:21,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:04:21,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:04:21,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:04:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:04:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:21,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:21,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:21,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:21,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 03:04:21,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:21,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:04:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:04:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:22,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615959104] [2020-10-14 03:04:22,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:04:22,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:04:22,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129865751] [2020-10-14 03:04:22,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:04:22,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:22,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:04:22,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:04:22,041 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:04:37,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:37,879 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 03:04:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:37,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 03:04:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:37,921 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 03:04:37,921 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 03:04:37,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:04:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 03:04:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 03:04:38,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 03:04:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 03:04:38,098 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 44 [2020-10-14 03:04:38,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:38,099 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 03:04:38,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:04:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 03:04:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 03:04:38,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:38,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:04:38,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:04:38,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:38,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:38,107 INFO L82 PathProgramCache]: Analyzing trace with hash 682848630, now seen corresponding path program 1 times [2020-10-14 03:04:38,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:38,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013372176] [2020-10-14 03:04:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:04:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:04:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-14 03:04:39,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:04:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 03:04:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:04:39,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:39,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:39,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:04:39,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:04:39,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:04:39,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 03:04:39,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:04:39,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:39,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013372176] [2020-10-14 03:04:39,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:39,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:04:39,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273134125] [2020-10-14 03:04:39,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:04:39,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:39,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:04:39,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:04:39,608 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-14 03:04:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:57,304 INFO L93 Difference]: Finished difference Result 5465 states and 9067 transitions. [2020-10-14 03:04:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:57,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 03:04:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:57,330 INFO L225 Difference]: With dead ends: 5465 [2020-10-14 03:04:57,330 INFO L226 Difference]: Without dead ends: 3586 [2020-10-14 03:04:57,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:04:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2020-10-14 03:04:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3561. [2020-10-14 03:04:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2020-10-14 03:04:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5507 transitions. [2020-10-14 03:04:57,463 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5507 transitions. Word has length 114 [2020-10-14 03:04:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:57,464 INFO L479 AbstractCegarLoop]: Abstraction has 3561 states and 5507 transitions. [2020-10-14 03:04:57,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:04:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5507 transitions. [2020-10-14 03:04:57,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 03:04:57,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:57,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:04:57,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:04:57,471 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash -564335073, now seen corresponding path program 1 times [2020-10-14 03:04:57,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:57,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005710223] [2020-10-14 03:04:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:59,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:59,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:04:59,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:04:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-10-14 03:04:59,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:59,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 03:04:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 03:04:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:59,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:59,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:59,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:59,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:04:59,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:59,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:04:59,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:59,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:04:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:04:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:59,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:04:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:59,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005710223] [2020-10-14 03:04:59,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:59,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:04:59,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946663058] [2020-10-14 03:04:59,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:04:59,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:59,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:04:59,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:04:59,400 INFO L87 Difference]: Start difference. First operand 3561 states and 5507 transitions. Second operand 6 states. [2020-10-14 03:05:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:24,764 INFO L93 Difference]: Finished difference Result 9594 states and 15184 transitions. [2020-10-14 03:05:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:05:24,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-14 03:05:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:24,797 INFO L225 Difference]: With dead ends: 9594 [2020-10-14 03:05:24,797 INFO L226 Difference]: Without dead ends: 6039 [2020-10-14 03:05:24,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:05:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2020-10-14 03:05:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 6012. [2020-10-14 03:05:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6012 states. [2020-10-14 03:05:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 8759 transitions. [2020-10-14 03:05:25,013 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 8759 transitions. Word has length 117 [2020-10-14 03:05:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:25,016 INFO L479 AbstractCegarLoop]: Abstraction has 6012 states and 8759 transitions. [2020-10-14 03:05:25,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:05:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 8759 transitions. [2020-10-14 03:05:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 03:05:25,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:25,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:25,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:05:25,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:25,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1187383904, now seen corresponding path program 1 times [2020-10-14 03:05:25,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:25,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69315911] [2020-10-14 03:05:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:26,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:05:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:05:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-14 03:05:26,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:26,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:05:26,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 03:05:26,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:26,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:26,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:26,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:26,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:05:26,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:26,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:26,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:26,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:05:26,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:05:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:26,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:05:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:26,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69315911] [2020-10-14 03:05:26,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:26,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:05:26,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500263087] [2020-10-14 03:05:26,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:05:26,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:26,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:05:26,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:05:26,420 INFO L87 Difference]: Start difference. First operand 6012 states and 8759 transitions. Second operand 5 states. [2020-10-14 03:05:45,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:45,528 INFO L93 Difference]: Finished difference Result 12141 states and 18540 transitions. [2020-10-14 03:05:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:05:45,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 03:05:45,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:45,577 INFO L225 Difference]: With dead ends: 12141 [2020-10-14 03:05:45,577 INFO L226 Difference]: Without dead ends: 8581 [2020-10-14 03:05:45,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:05:45,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8581 states. [2020-10-14 03:05:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8581 to 8501. [2020-10-14 03:05:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8501 states. [2020-10-14 03:05:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8501 states to 8501 states and 12435 transitions. [2020-10-14 03:05:45,844 INFO L78 Accepts]: Start accepts. Automaton has 8501 states and 12435 transitions. Word has length 134 [2020-10-14 03:05:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:45,846 INFO L479 AbstractCegarLoop]: Abstraction has 8501 states and 12435 transitions. [2020-10-14 03:05:45,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:05:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8501 states and 12435 transitions. [2020-10-14 03:05:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 03:05:45,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:45,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:45,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:05:45,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 988973573, now seen corresponding path program 1 times [2020-10-14 03:05:45,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:45,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503134591] [2020-10-14 03:05:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:45,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:46,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 03:05:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:05:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-14 03:05:46,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:46,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 03:05:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 03:05:46,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:05:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:46,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:46,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:46,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:05:46,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:46,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:46,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:46,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:05:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 03:05:46,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:46,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:46,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:05:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:05:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:46,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503134591] [2020-10-14 03:05:46,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:46,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:05:46,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261692318] [2020-10-14 03:05:46,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:05:46,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:46,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:05:46,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:05:46,971 INFO L87 Difference]: Start difference. First operand 8501 states and 12435 transitions. Second operand 5 states. [2020-10-14 03:06:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:05,032 INFO L93 Difference]: Finished difference Result 22717 states and 33997 transitions. [2020-10-14 03:06:05,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:06:05,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-14 03:06:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:05,110 INFO L225 Difference]: With dead ends: 22717 [2020-10-14 03:06:05,110 INFO L226 Difference]: Without dead ends: 14222 [2020-10-14 03:06:05,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:06:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14222 states. [2020-10-14 03:06:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14222 to 14209. [2020-10-14 03:06:05,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14209 states. [2020-10-14 03:06:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14209 states to 14209 states and 20440 transitions. [2020-10-14 03:06:06,391 INFO L78 Accepts]: Start accepts. Automaton has 14209 states and 20440 transitions. Word has length 144 [2020-10-14 03:06:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:06,392 INFO L479 AbstractCegarLoop]: Abstraction has 14209 states and 20440 transitions. [2020-10-14 03:06:06,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:06:06,392 INFO L276 IsEmpty]: Start isEmpty. Operand 14209 states and 20440 transitions. [2020-10-14 03:06:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 03:06:06,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:06,401 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:06:06,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:06:06,402 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash -253932188, now seen corresponding path program 1 times [2020-10-14 03:06:06,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:06,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932437920] [2020-10-14 03:06:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:11,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:11,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 03:06:11,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:06:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 03:06:11,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:11,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 03:06:11,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:06:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:11,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:11,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:06:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:11,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:11,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:11,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:06:11,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:11,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:06:11,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:11,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:06:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 03:06:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:11,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:11,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:06:11,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 03:06:11,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:11,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:06:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 03:06:11,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:06:12,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932437920] [2020-10-14 03:06:12,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:12,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:06:12,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104029424] [2020-10-14 03:06:12,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:06:12,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:12,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:06:12,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:06:12,125 INFO L87 Difference]: Start difference. First operand 14209 states and 20440 transitions. Second operand 7 states. [2020-10-14 03:06:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:49,304 INFO L93 Difference]: Finished difference Result 53919 states and 83814 transitions. [2020-10-14 03:06:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:06:49,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-14 03:06:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:49,538 INFO L225 Difference]: With dead ends: 53919 [2020-10-14 03:06:49,538 INFO L226 Difference]: Without dead ends: 39716 [2020-10-14 03:06:49,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:06:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39716 states. [2020-10-14 03:06:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39716 to 39562. [2020-10-14 03:06:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39562 states. [2020-10-14 03:06:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39562 states to 39562 states and 55057 transitions. [2020-10-14 03:06:50,785 INFO L78 Accepts]: Start accepts. Automaton has 39562 states and 55057 transitions. Word has length 229 [2020-10-14 03:06:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:50,786 INFO L479 AbstractCegarLoop]: Abstraction has 39562 states and 55057 transitions. [2020-10-14 03:06:50,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:06:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 39562 states and 55057 transitions. [2020-10-14 03:06:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 03:06:50,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:50,798 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:06:50,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:06:50,799 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:50,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:50,799 INFO L82 PathProgramCache]: Analyzing trace with hash 330139883, now seen corresponding path program 1 times [2020-10-14 03:06:50,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:50,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760476931] [2020-10-14 03:06:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:50,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 03:06:55,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:06:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 03:06:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:55,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:06:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:06:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:55,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:55,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:55,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:06:55,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:55,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:55,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:56,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:06:56,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:06:56,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:56,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:06:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 03:06:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:56,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:56,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:56,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 03:06:56,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:56,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 03:06:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:56,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:06:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 03:06:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:06:56,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760476931] [2020-10-14 03:06:56,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:56,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:06:56,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906083694] [2020-10-14 03:06:56,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:06:56,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:56,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:06:56,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:06:56,647 INFO L87 Difference]: Start difference. First operand 39562 states and 55057 transitions. Second operand 7 states. [2020-10-14 03:07:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:07:26,883 INFO L93 Difference]: Finished difference Result 110413 states and 177402 transitions. [2020-10-14 03:07:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:07:26,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-14 03:07:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:07:27,331 INFO L225 Difference]: With dead ends: 110413 [2020-10-14 03:07:27,332 INFO L226 Difference]: Without dead ends: 70861 [2020-10-14 03:07:27,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:07:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70861 states. [2020-10-14 03:07:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70861 to 69466. [2020-10-14 03:07:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69466 states. [2020-10-14 03:07:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69466 states to 69466 states and 98720 transitions. [2020-10-14 03:07:29,271 INFO L78 Accepts]: Start accepts. Automaton has 69466 states and 98720 transitions. Word has length 261 [2020-10-14 03:07:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:07:29,271 INFO L479 AbstractCegarLoop]: Abstraction has 69466 states and 98720 transitions. [2020-10-14 03:07:29,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:07:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 69466 states and 98720 transitions. [2020-10-14 03:07:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 03:07:29,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:07:29,307 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:07:29,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:07:29,308 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:07:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:07:29,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1435203210, now seen corresponding path program 1 times [2020-10-14 03:07:29,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:07:29,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794574508] [2020-10-14 03:07:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:07:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:30,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:34,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:34,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 03:07:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 03:07:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 03:07:34,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:34,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:07:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 314 [2020-10-14 03:07:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:34,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:07:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:34,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:34,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:07:34,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:07:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:07:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:34,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:07:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:07:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:34,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:34,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:07:34,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:07:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 03:07:34,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:34,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:07:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:07:34,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 03:07:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:34,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:34,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:07:34,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:07:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:07:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:34,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:07:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:07:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 03:07:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:07:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:07:35,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:07:35,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 03:07:35,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:07:35,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 03:07:35,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:07:35,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:07:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:07:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 03:07:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 03:07:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:07:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 03:07:35,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794574508] [2020-10-14 03:07:35,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:07:35,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:07:35,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997728223] [2020-10-14 03:07:35,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:07:35,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:07:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:07:35,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:07:35,416 INFO L87 Difference]: Start difference. First operand 69466 states and 98720 transitions. Second operand 6 states. [2020-10-14 03:07:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:07:54,295 INFO L93 Difference]: Finished difference Result 128407 states and 184211 transitions. [2020-10-14 03:07:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:07:54,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 349 [2020-10-14 03:07:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:07:54,695 INFO L225 Difference]: With dead ends: 128407 [2020-10-14 03:07:54,695 INFO L226 Difference]: Without dead ends: 69447 [2020-10-14 03:07:54,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42