/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:43:33,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:43:33,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:43:33,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:43:33,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:43:33,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:43:33,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:43:33,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:43:33,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:43:33,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:43:33,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:43:33,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:43:33,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:43:33,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:43:33,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:43:33,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:43:33,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:43:33,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:43:33,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:43:33,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:43:33,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:43:33,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:43:33,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:43:33,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:43:33,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:43:33,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:43:33,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:43:33,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:43:33,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:43:33,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:43:33,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:43:33,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:43:33,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:43:33,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:43:33,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:43:33,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:43:33,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:43:33,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:43:33,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:43:33,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:43:33,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:43:33,978 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 22:43:34,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:43:34,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:43:34,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:43:34,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:43:34,030 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:43:34,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:43:34,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:43:34,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:43:34,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:43:34,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:43:34,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:43:34,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:43:34,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:43:34,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:43:34,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:43:34,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:43:34,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:43:34,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:43:34,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:43:34,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:43:34,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:43:34,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:43:34,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:43:34,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:43:34,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:43:34,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:43:34,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:43:34,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:43:34,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:43:34,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:43:34,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:43:34,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:43:34,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:43:34,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:43:34,378 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:43:34,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-14 22:43:34,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2508ca726/de13a4bd322c4a028e5f0dd1ab329396/FLAGc2ba25794 [2020-10-14 22:43:35,211 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:43:35,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-14 22:43:35,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2508ca726/de13a4bd322c4a028e5f0dd1ab329396/FLAGc2ba25794 [2020-10-14 22:43:35,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2508ca726/de13a4bd322c4a028e5f0dd1ab329396 [2020-10-14 22:43:35,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:43:35,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:43:35,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:43:35,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:43:35,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:43:35,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:43:35" (1/1) ... [2020-10-14 22:43:35,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c21df97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:35, skipping insertion in model container [2020-10-14 22:43:35,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:43:35" (1/1) ... [2020-10-14 22:43:35,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:43:35,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:43:37,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:43:37,207 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:43:37,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:43:37,798 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:43:37,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37 WrapperNode [2020-10-14 22:43:37,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:43:37,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:43:37,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:43:37,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:43:37,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (1/1) ... [2020-10-14 22:43:37,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (1/1) ... [2020-10-14 22:43:37,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (1/1) ... [2020-10-14 22:43:37,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (1/1) ... [2020-10-14 22:43:38,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (1/1) ... [2020-10-14 22:43:38,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (1/1) ... [2020-10-14 22:43:38,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (1/1) ... [2020-10-14 22:43:38,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:43:38,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:43:38,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:43:38,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:43:38,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (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 22:43:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:43:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:43:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:43:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:43:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 22:43:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:43:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:43:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 22:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:43:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:43:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:43:44,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:43:44,641 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:43:44,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:43:44 BoogieIcfgContainer [2020-10-14 22:43:44,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:43:44,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:43:44,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:43:44,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:43:44,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:43:35" (1/3) ... [2020-10-14 22:43:44,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3b721b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:43:44, skipping insertion in model container [2020-10-14 22:43:44,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:37" (2/3) ... [2020-10-14 22:43:44,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3b721b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:43:44, skipping insertion in model container [2020-10-14 22:43:44,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:43:44" (3/3) ... [2020-10-14 22:43:44,660 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label18.c [2020-10-14 22:43:44,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:43:44,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:43:44,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:43:44,726 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:43:44,726 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:43:44,726 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:43:44,726 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:43:44,726 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:43:44,727 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:43:44,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:43:44,727 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:43:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 22:43:44,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 22:43:44,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:43:44,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:43:44,776 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:43:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:43:44,783 INFO L82 PathProgramCache]: Analyzing trace with hash 269272858, now seen corresponding path program 1 times [2020-10-14 22:43:44,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:43:44,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241844261] [2020-10-14 22:43:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:43:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:45,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:43:45,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-14 22:43:45,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:45,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:43:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:43:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:43:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:43:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:43:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:45,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:45,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:45,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:43:45,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:45,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:43:45,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:45,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:45,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:43:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:43:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:43:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:45,596 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 22:43:45,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241844261] [2020-10-14 22:43:45,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:43:45,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:43:45,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836736641] [2020-10-14 22:43:45,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:43:45,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:43:45,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:43:45,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:43:45,626 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 22:43:56,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:43:56,296 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 22:43:56,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:43:56,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 22:43:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:43:56,337 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 22:43:56,338 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 22:43:56,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:43:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 22:43:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 22:43:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 22:43:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-14 22:43:56,539 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 63 [2020-10-14 22:43:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:43:56,540 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-14 22:43:56,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:43:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-14 22:43:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 22:43:56,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:43:56,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:43:56,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:43:56,552 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:43:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:43:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash 514103358, now seen corresponding path program 1 times [2020-10-14 22:43:56,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:43:56,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443250344] [2020-10-14 22:43:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:43:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:58,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:43:58,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:43:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-14 22:43:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:58,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:43:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 22:43:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 22:43:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:43:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:43:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:58,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:58,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:43:58,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:58,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:43:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:58,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:43:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:43:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:43:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:43:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:58,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:58,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:43:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:43:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:58,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:43:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:43:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:43:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:43:58,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443250344] [2020-10-14 22:43:58,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:43:58,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:43:58,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702768624] [2020-10-14 22:43:58,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:43:58,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:43:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:43:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:43:58,522 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 5 states. [2020-10-14 22:44:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:08,459 INFO L93 Difference]: Finished difference Result 4276 states and 7041 transitions. [2020-10-14 22:44:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:44:08,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 22:44:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:08,476 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 22:44:08,477 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 22:44:08,481 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 22:44:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 22:44:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 22:44:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 22:44:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4171 transitions. [2020-10-14 22:44:08,560 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4171 transitions. Word has length 133 [2020-10-14 22:44:08,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:08,561 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4171 transitions. [2020-10-14 22:44:08,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:44:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4171 transitions. [2020-10-14 22:44:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 22:44:08,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:08,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:44:08,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:44:08,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:08,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1129284989, now seen corresponding path program 1 times [2020-10-14 22:44:08,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:08,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960961643] [2020-10-14 22:44:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:44:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:09,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:09,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:44:09,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:44:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-14 22:44:09,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:09,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:44:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:44:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 22:44:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:44:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:09,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:09,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:44:09,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:44:09,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:09,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:44:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:44:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:44:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:09,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:09,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:44:09,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:44:09,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:09,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:44:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:44:09,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960961643] [2020-10-14 22:44:09,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:44:09,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:44:09,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065664276] [2020-10-14 22:44:09,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:44:09,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:44:09,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:44:09,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:44:09,583 INFO L87 Difference]: Start difference. First operand 2853 states and 4171 transitions. Second operand 5 states. [2020-10-14 22:44:21,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:21,792 INFO L93 Difference]: Finished difference Result 8541 states and 12610 transitions. [2020-10-14 22:44:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:44:21,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 22:44:21,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:21,825 INFO L225 Difference]: With dead ends: 8541 [2020-10-14 22:44:21,825 INFO L226 Difference]: Without dead ends: 5694 [2020-10-14 22:44:21,833 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 22:44:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2020-10-14 22:44:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5690. [2020-10-14 22:44:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5690 states. [2020-10-14 22:44:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 7504 transitions. [2020-10-14 22:44:21,973 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 7504 transitions. Word has length 134 [2020-10-14 22:44:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:21,974 INFO L479 AbstractCegarLoop]: Abstraction has 5690 states and 7504 transitions. [2020-10-14 22:44:21,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:44:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 7504 transitions. [2020-10-14 22:44:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 22:44:21,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:21,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 22:44:21,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:44:21,979 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:21,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:21,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1633850758, now seen corresponding path program 1 times [2020-10-14 22:44:21,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:21,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899538074] [2020-10-14 22:44:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:44:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:22,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:22,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:22,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:22,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 22:44:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:44:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-14 22:44:22,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:22,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:44:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:44:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:44:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:44:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:22,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:22,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:44:22,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:22,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:44:22,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:22,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:44:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:44:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:22,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:44:22,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 22:44:22,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:22,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:44:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:44:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:44:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:44:23,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899538074] [2020-10-14 22:44:23,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:44:23,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:44:23,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094528757] [2020-10-14 22:44:23,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:44:23,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:44:23,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:44:23,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:44:23,032 INFO L87 Difference]: Start difference. First operand 5690 states and 7504 transitions. Second operand 8 states. [2020-10-14 22:44:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:37,611 INFO L93 Difference]: Finished difference Result 20681 states and 28307 transitions. [2020-10-14 22:44:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:44:37,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-10-14 22:44:37,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:37,702 INFO L225 Difference]: With dead ends: 20681 [2020-10-14 22:44:37,702 INFO L226 Difference]: Without dead ends: 14997 [2020-10-14 22:44:37,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:44:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2020-10-14 22:44:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 13589. [2020-10-14 22:44:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13589 states. [2020-10-14 22:44:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13589 states to 13589 states and 16917 transitions. [2020-10-14 22:44:38,174 INFO L78 Accepts]: Start accepts. Automaton has 13589 states and 16917 transitions. Word has length 137 [2020-10-14 22:44:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:38,174 INFO L479 AbstractCegarLoop]: Abstraction has 13589 states and 16917 transitions. [2020-10-14 22:44:38,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:44:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 13589 states and 16917 transitions. [2020-10-14 22:44:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 22:44:38,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:38,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:38,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:44:38,181 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:38,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:38,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1668142983, now seen corresponding path program 1 times [2020-10-14 22:44:38,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:38,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394961736] [2020-10-14 22:44:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:44:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:38,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:38,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:38,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:38,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 22:44:38,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:44:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-14 22:44:38,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:38,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:38,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:44:38,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:44:38,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:44:38,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:44:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:44:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:38,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:38,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:44:38,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:38,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:44:38,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:38,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:38,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:44:38,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:44:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:44:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:39,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:39,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:44:39,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:39,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:44:39,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:39,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:44:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:44:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:44:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:44:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:44:39,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394961736] [2020-10-14 22:44:39,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:44:39,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:44:39,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667845726] [2020-10-14 22:44:39,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:44:39,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:44:39,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:44:39,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:44:39,206 INFO L87 Difference]: Start difference. First operand 13589 states and 16917 transitions. Second operand 7 states. [2020-10-14 22:44:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:54,396 INFO L93 Difference]: Finished difference Result 30970 states and 38837 transitions. [2020-10-14 22:44:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:44:54,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-14 22:44:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:54,457 INFO L225 Difference]: With dead ends: 30970 [2020-10-14 22:44:54,458 INFO L226 Difference]: Without dead ends: 17387 [2020-10-14 22:44:54,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:44:54,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17387 states. [2020-10-14 22:44:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17387 to 17370. [2020-10-14 22:44:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17370 states. [2020-10-14 22:44:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17370 states to 17370 states and 21386 transitions. [2020-10-14 22:44:54,858 INFO L78 Accepts]: Start accepts. Automaton has 17370 states and 21386 transitions. Word has length 152 [2020-10-14 22:44:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:54,859 INFO L479 AbstractCegarLoop]: Abstraction has 17370 states and 21386 transitions. [2020-10-14 22:44:54,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:44:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 17370 states and 21386 transitions. [2020-10-14 22:44:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 22:44:54,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:54,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:54,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:44:54,864 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:54,864 INFO L82 PathProgramCache]: Analyzing trace with hash -445210, now seen corresponding path program 1 times [2020-10-14 22:44:54,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:54,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532791934] [2020-10-14 22:44:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:44:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:55,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:56,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:56,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 22:44:56,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:44:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-14 22:44:56,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:56,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:44:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:44:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:44:56,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:44:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:44:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:44:56,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:44:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:56,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:44:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:44:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:56,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:56,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:44:56,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:56,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 22:44:56,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:56,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:56,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:44:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:44:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:44:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:44:56,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532791934] [2020-10-14 22:44:56,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:44:56,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:44:56,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710209391] [2020-10-14 22:44:56,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:44:56,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:44:56,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:44:56,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:44:56,978 INFO L87 Difference]: Start difference. First operand 17370 states and 21386 transitions. Second operand 7 states. [2020-10-14 22:45:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:45:12,152 INFO L93 Difference]: Finished difference Result 43176 states and 56441 transitions. [2020-10-14 22:45:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:45:12,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-14 22:45:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:45:12,301 INFO L225 Difference]: With dead ends: 43176 [2020-10-14 22:45:12,301 INFO L226 Difference]: Without dead ends: 25812 [2020-10-14 22:45:12,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:45:12,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25812 states. [2020-10-14 22:45:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25812 to 24025. [2020-10-14 22:45:12,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24025 states. [2020-10-14 22:45:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24025 states to 24025 states and 29135 transitions. [2020-10-14 22:45:13,018 INFO L78 Accepts]: Start accepts. Automaton has 24025 states and 29135 transitions. Word has length 185 [2020-10-14 22:45:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:45:13,018 INFO L479 AbstractCegarLoop]: Abstraction has 24025 states and 29135 transitions. [2020-10-14 22:45:13,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:45:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 24025 states and 29135 transitions. [2020-10-14 22:45:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 22:45:13,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:45:13,025 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:13,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:45:13,026 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:45:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:45:13,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1399579323, now seen corresponding path program 1 times [2020-10-14 22:45:13,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:45:13,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804040282] [2020-10-14 22:45:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:45:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:15,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 22:45:15,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:45:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2493 [2020-10-14 22:45:15,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:15,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:45:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:45:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 283 [2020-10-14 22:45:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:45:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:15,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:15,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:15,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:45:15,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:45:15,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:15,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:45:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:45:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:15,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:15,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 22:45:15,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:15,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 22:45:15,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:15,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 22:45:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-14 22:45:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:16,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:16,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:45:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 22:45:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:16,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:45:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:45:17,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804040282] [2020-10-14 22:45:17,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:45:17,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:45:17,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850785299] [2020-10-14 22:45:17,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:45:17,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:45:17,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:45:17,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:45:17,339 INFO L87 Difference]: Start difference. First operand 24025 states and 29135 transitions. Second operand 8 states. [2020-10-14 22:45:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:45:29,551 INFO L93 Difference]: Finished difference Result 49763 states and 60444 transitions. [2020-10-14 22:45:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:45:29,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 338 [2020-10-14 22:45:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:45:29,633 INFO L225 Difference]: With dead ends: 49763 [2020-10-14 22:45:29,634 INFO L226 Difference]: Without dead ends: 25744 [2020-10-14 22:45:29,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:45:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25744 states. [2020-10-14 22:45:30,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25744 to 24860. [2020-10-14 22:45:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24860 states. [2020-10-14 22:45:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24860 states to 24860 states and 30137 transitions. [2020-10-14 22:45:30,100 INFO L78 Accepts]: Start accepts. Automaton has 24860 states and 30137 transitions. Word has length 338 [2020-10-14 22:45:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:45:30,101 INFO L479 AbstractCegarLoop]: Abstraction has 24860 states and 30137 transitions. [2020-10-14 22:45:30,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:45:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 24860 states and 30137 transitions. [2020-10-14 22:45:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 22:45:30,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:45:30,109 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:30,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:45:30,109 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:45:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:45:30,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1335648306, now seen corresponding path program 1 times [2020-10-14 22:45:30,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:45:30,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985521295] [2020-10-14 22:45:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:45:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:31,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-14 22:45:31,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:45:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-10-14 22:45:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:31,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-14 22:45:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:45:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:31,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:45:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:31,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:31,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:45:31,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:45:31,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:31,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:31,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:45:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:32,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 22:45:32,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:45:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:32,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 22:45:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:32,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-14 22:45:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:32,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:32,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:45:32,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 22:45:32,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:32,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:45:32,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:45:32,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985521295] [2020-10-14 22:45:32,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:45:32,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:45:32,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632317265] [2020-10-14 22:45:32,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:45:32,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:45:32,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:45:32,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:45:32,587 INFO L87 Difference]: Start difference. First operand 24860 states and 30137 transitions. Second operand 7 states. [2020-10-14 22:45:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:45:47,417 INFO L93 Difference]: Finished difference Result 52081 states and 64414 transitions. [2020-10-14 22:45:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:45:47,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-14 22:45:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:45:47,694 INFO L225 Difference]: With dead ends: 52081 [2020-10-14 22:45:47,694 INFO L226 Difference]: Without dead ends: 26252 [2020-10-14 22:45:47,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:45:47,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26252 states. [2020-10-14 22:45:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26252 to 26046. [2020-10-14 22:45:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26046 states. [2020-10-14 22:45:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26046 states to 26046 states and 28892 transitions. [2020-10-14 22:45:48,258 INFO L78 Accepts]: Start accepts. Automaton has 26046 states and 28892 transitions. Word has length 371 [2020-10-14 22:45:48,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:45:48,259 INFO L479 AbstractCegarLoop]: Abstraction has 26046 states and 28892 transitions. [2020-10-14 22:45:48,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:45:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 26046 states and 28892 transitions. [2020-10-14 22:45:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-14 22:45:48,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:45:48,265 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:48,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:45:48,266 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:45:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:45:48,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2027091655, now seen corresponding path program 1 times [2020-10-14 22:45:48,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:45:48,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568790447] [2020-10-14 22:45:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:45:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:53,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:53,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-14 22:45:53,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:45:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 22:45:53,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:53,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:45:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:45:53,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-14 22:45:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:45:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:53,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:45:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:45:53,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:53,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:45:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:53,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:45:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:45:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-14 22:45:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:54,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:45:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-14 22:45:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:54,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:54,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:45:54,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:54,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 22:45:54,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:54,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:45:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 22:45:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-14 22:45:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:55,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:55,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:45:55,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:45:55,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:55,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 22:45:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 112 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:45:55,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568790447] [2020-10-14 22:45:55,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:45:55,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:45:55,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717805892] [2020-10-14 22:45:55,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:45:55,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:45:55,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:45:55,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:45:55,498 INFO L87 Difference]: Start difference. First operand 26046 states and 28892 transitions. Second operand 8 states. [2020-10-14 22:46:05,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:46:05,640 INFO L93 Difference]: Finished difference Result 60899 states and 68740 transitions. [2020-10-14 22:46:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:46:05,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 492 [2020-10-14 22:46:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:46:05,762 INFO L225 Difference]: With dead ends: 60899 [2020-10-14 22:46:05,762 INFO L226 Difference]: Without dead ends: 35561 [2020-10-14 22:46:05,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:46:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35561 states. [2020-10-14 22:46:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35561 to 34774. [2020-10-14 22:46:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34774 states. [2020-10-14 22:46:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34774 states to 34774 states and 38708 transitions. [2020-10-14 22:46:06,379 INFO L78 Accepts]: Start accepts. Automaton has 34774 states and 38708 transitions. Word has length 492 [2020-10-14 22:46:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:46:06,380 INFO L479 AbstractCegarLoop]: Abstraction has 34774 states and 38708 transitions. [2020-10-14 22:46:06,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:46:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 34774 states and 38708 transitions. [2020-10-14 22:46:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2020-10-14 22:46:06,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:46:06,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:06,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:46:06,398 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:46:06,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:46:06,399 INFO L82 PathProgramCache]: Analyzing trace with hash -581810064, now seen corresponding path program 1 times [2020-10-14 22:46:06,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:46:06,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860797694] [2020-10-14 22:46:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:46:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:11,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1039 [2020-10-14 22:46:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:46:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4971 [2020-10-14 22:46:11,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:11,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-14 22:46:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:46:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:46:12,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:46:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:12,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:12,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:46:12,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:46:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:12,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:46:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:46:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:12,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:12,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:46:12,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 22:46:12,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:12,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:12,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:12,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:46:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:46:12,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:12,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:46:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:12,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:12,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:12,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:46:12,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:12,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:46:12,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:12,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:46:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:46:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:12,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:12,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:46:12,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 22:46:12,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:12,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:46:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:12,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:46:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:46:12,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:12,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:46:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:46:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:13,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:13,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:46:13,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 22:46:13,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:13,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:46:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:46:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:46:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-14 22:46:13,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860797694] [2020-10-14 22:46:13,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:46:13,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:46:13,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912073032] [2020-10-14 22:46:13,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:46:13,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:46:13,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:46:13,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:46:13,851 INFO L87 Difference]: Start difference. First operand 34774 states and 38708 transitions. Second operand 7 states. [2020-10-14 22:46:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:46:24,066 INFO L93 Difference]: Finished difference Result 76894 states and 87215 transitions. [2020-10-14 22:46:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:46:24,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1019 [2020-10-14 22:46:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:46:24,184 INFO L225 Difference]: With dead ends: 76894 [2020-10-14 22:46:24,184 INFO L226 Difference]: Without dead ends: 43538 [2020-10-14 22:46:24,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 22:46:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43538 states. [2020-10-14 22:46:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43538 to 42766. [2020-10-14 22:46:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42766 states. [2020-10-14 22:46:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42766 states to 42766 states and 47934 transitions. [2020-10-14 22:46:24,950 INFO L78 Accepts]: Start accepts. Automaton has 42766 states and 47934 transitions. Word has length 1019 [2020-10-14 22:46:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:46:24,952 INFO L479 AbstractCegarLoop]: Abstraction has 42766 states and 47934 transitions. [2020-10-14 22:46:24,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:46:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42766 states and 47934 transitions. [2020-10-14 22:46:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-14 22:46:24,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:46:24,982 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:24,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:46:24,983 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:46:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:46:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -422195919, now seen corresponding path program 1 times [2020-10-14 22:46:24,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:46:24,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495159378] [2020-10-14 22:46:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:46:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:26,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:30,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:30,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1098 [2020-10-14 22:46:30,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:46:30,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 22:46:30,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:30,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:30,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:30,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 944 [2020-10-14 22:46:30,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:46:30,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:30,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:46:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:30,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:30,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:46:30,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:46:30,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:30,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:30,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:46:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:30,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:30,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:30,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:46:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 22:46:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:30,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:30,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:30,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:46:30,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:46:30,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:30,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:46:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:46:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:30,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:30,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:46:30,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:46:30,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:30,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:30,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:46:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:46:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:32,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:46:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:46:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:32,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:46:32,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:46:32,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:32,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:46:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:32,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 22:46:32,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-14 22:46:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:32,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:32,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:46:32,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:32,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 22:46:32,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:32,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:46:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:46:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 492 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-14 22:46:32,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495159378] [2020-10-14 22:46:32,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:46:32,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:46:32,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504868473] [2020-10-14 22:46:32,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:46:32,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:46:32,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:46:32,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:46:32,852 INFO L87 Difference]: Start difference. First operand 42766 states and 47934 transitions. Second operand 7 states. [2020-10-14 22:46:46,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:46:46,014 INFO L93 Difference]: Finished difference Result 99124 states and 113251 transitions. [2020-10-14 22:46:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:46:46,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1076 [2020-10-14 22:46:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:46:46,160 INFO L225 Difference]: With dead ends: 99124 [2020-10-14 22:46:46,160 INFO L226 Difference]: Without dead ends: 57776 [2020-10-14 22:46:46,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 22:46:46,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57776 states. [2020-10-14 22:46:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57776 to 57003. [2020-10-14 22:46:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57003 states. [2020-10-14 22:46:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57003 states to 57003 states and 64250 transitions. [2020-10-14 22:46:46,933 INFO L78 Accepts]: Start accepts. Automaton has 57003 states and 64250 transitions. Word has length 1076 [2020-10-14 22:46:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:46:46,934 INFO L479 AbstractCegarLoop]: Abstraction has 57003 states and 64250 transitions. [2020-10-14 22:46:46,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:46:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 57003 states and 64250 transitions. [2020-10-14 22:46:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1189 [2020-10-14 22:46:46,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:46:46,958 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:46,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:46:46,958 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:46:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:46:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash -15271158, now seen corresponding path program 1 times [2020-10-14 22:46:46,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:46:46,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269788337] [2020-10-14 22:46:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:46:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:52,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:52,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1212 [2020-10-14 22:46:52,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:46:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 22:46:52,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:52,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-14 22:46:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:46:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:52,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:46:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:52,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:46:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:52,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:52,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:52,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:52,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:46:52,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:46:52,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:52,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:46:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:52,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:52,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:46:52,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:46:52,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:52,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:46:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:46:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 22:46:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 22:46:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:52,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-14 22:46:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:53,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 22:46:53,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:53,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:46:53,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:53,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 22:46:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:53,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-14 22:46:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:53,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:53,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:46:53,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 22:46:53,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:53,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:46:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:46:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-14 22:46:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:53,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:53,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:46:53,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:46:53,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:53,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 22:46:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1044 [2020-10-14 22:46:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:53,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:53,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 22:46:53,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:46:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:53,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 22:46:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 542 proven. 158 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2020-10-14 22:46:55,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269788337] [2020-10-14 22:46:55,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:46:55,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:46:55,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390759073] [2020-10-14 22:46:55,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:46:55,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:46:55,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:46:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:46:55,035 INFO L87 Difference]: Start difference. First operand 57003 states and 64250 transitions. Second operand 7 states. [2020-10-14 22:47:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:47:09,059 INFO L93 Difference]: Finished difference Result 113321 states and 127896 transitions. [2020-10-14 22:47:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:47:09,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1188 [2020-10-14 22:47:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:47:09,321 INFO L225 Difference]: With dead ends: 113321 [2020-10-14 22:47:09,321 INFO L226 Difference]: Without dead ends: 57736 [2020-10-14 22:47:09,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 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 22:47:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57736 states. [2020-10-14 22:47:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57736 to 57000. [2020-10-14 22:47:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57000 states. [2020-10-14 22:47:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57000 states to 57000 states and 64182 transitions. [2020-10-14 22:47:09,917 INFO L78 Accepts]: Start accepts. Automaton has 57000 states and 64182 transitions. Word has length 1188 [2020-10-14 22:47:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:47:09,918 INFO L479 AbstractCegarLoop]: Abstraction has 57000 states and 64182 transitions. [2020-10-14 22:47:09,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:47:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 57000 states and 64182 transitions. [2020-10-14 22:47:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2020-10-14 22:47:09,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:47:09,942 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:09,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:47:09,942 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:47:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:47:09,943 INFO L82 PathProgramCache]: Analyzing trace with hash -730714591, now seen corresponding path program 1 times [2020-10-14 22:47:09,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:47:09,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948609453] [2020-10-14 22:47:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:47:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:47:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:47:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking...