/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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:25:25,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:25:25,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:25:25,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:25:25,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:25:25,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:25:25,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:25:25,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:25:25,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:25:25,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:25:25,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:25:25,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:25:25,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:25:26,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:25:26,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:25:26,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:25:26,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:25:26,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:25:26,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:25:26,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:25:26,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:25:26,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:25:26,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:25:26,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:25:26,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:25:26,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:25:26,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:25:26,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:25:26,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:25:26,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:25:26,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:25:26,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:25:26,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:25:26,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:25:26,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:25:26,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:25:26,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:25:26,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:25:26,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:25:26,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:25:26,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:25:26,047 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 [2020-09-24 19:25:26,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:25:26,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:25:26,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:25:26,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:25:26,104 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:25:26,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:25:26,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:25:26,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:25:26,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:25:26,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:25:26,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:25:26,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:25:26,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:25:26,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:25:26,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:25:26,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:25:26,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:25:26,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:25:26,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:25:26,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:25:26,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:25:26,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:26,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:25:26,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:25:26,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:25:26,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:25:26,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:25:26,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:25:26,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:25:26,110 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:25:26,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:25:26,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:25:26,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:25:26,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:25:26,578 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:25:26,579 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-24 19:25:26,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8f3ff51/317b33ecfe6041519757aced09f29c9b/FLAGbb3625621 [2020-09-24 19:25:27,332 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:25:27,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-24 19:25:27,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8f3ff51/317b33ecfe6041519757aced09f29c9b/FLAGbb3625621 [2020-09-24 19:25:27,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8f3ff51/317b33ecfe6041519757aced09f29c9b [2020-09-24 19:25:27,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:25:27,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:25:27,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:27,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:25:27,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:25:27,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:27" (1/1) ... [2020-09-24 19:25:27,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb2e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:27, skipping insertion in model container [2020-09-24 19:25:27,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:27" (1/1) ... [2020-09-24 19:25:27,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:25:27,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:25:28,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:28,246 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:25:28,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:28,398 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:25:28,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28 WrapperNode [2020-09-24 19:25:28,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:28,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:25:28,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:25:28,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:25:28,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (1/1) ... [2020-09-24 19:25:28,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (1/1) ... [2020-09-24 19:25:28,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (1/1) ... [2020-09-24 19:25:28,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (1/1) ... [2020-09-24 19:25:28,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (1/1) ... [2020-09-24 19:25:28,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (1/1) ... [2020-09-24 19:25:28,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (1/1) ... [2020-09-24 19:25:28,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:25:28,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:25:28,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:25:28,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:25:28,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (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 [2020-09-24 19:25:28,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:25:28,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:25:28,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:25:28,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:25:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:25:28,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:25:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:25:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:25:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:25:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:25:28,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:25:30,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:25:30,202 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:25:30,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:30 BoogieIcfgContainer [2020-09-24 19:25:30,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:25:30,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:25:30,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:25:30,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:25:30,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:25:27" (1/3) ... [2020-09-24 19:25:30,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3528b2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:30, skipping insertion in model container [2020-09-24 19:25:30,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:28" (2/3) ... [2020-09-24 19:25:30,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3528b2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:30, skipping insertion in model container [2020-09-24 19:25:30,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:30" (3/3) ... [2020-09-24 19:25:30,225 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-24 19:25:30,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:25:30,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:25:30,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:25:30,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:25:30,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:25:30,312 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:25:30,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:25:30,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:25:30,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:25:30,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:25:30,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:25:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:25:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-24 19:25:30,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:30,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:30,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:30,379 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-24 19:25:30,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:30,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280691496] [2020-09-24 19:25:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 19:25:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:25:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:25:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 19:25:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:25:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:32,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:25:32,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:25:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:32,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280691496] [2020-09-24 19:25:32,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:32,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:25:32,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907796922] [2020-09-24 19:25:32,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:32,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:32,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:32,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:32,123 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 19:25:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:34,977 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-24 19:25:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:25:34,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-24 19:25:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:35,020 INFO L225 Difference]: With dead ends: 1360 [2020-09-24 19:25:35,021 INFO L226 Difference]: Without dead ends: 781 [2020-09-24 19:25:35,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-24 19:25:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-24 19:25:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-24 19:25:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-24 19:25:35,153 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 108 [2020-09-24 19:25:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:35,154 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-24 19:25:35,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-24 19:25:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 19:25:35,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:35,168 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:25:35,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:25:35,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:35,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1639648560, now seen corresponding path program 1 times [2020-09-24 19:25:35,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:35,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80762523] [2020-09-24 19:25:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:36,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 19:25:36,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-24 19:25:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:25:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:25:36,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-09-24 19:25:36,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:36,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:36,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:25:36,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:36,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:36,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:25:36,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:25:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:36,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80762523] [2020-09-24 19:25:36,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:36,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:36,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240499727] [2020-09-24 19:25:36,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:36,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:36,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:36,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:36,542 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 5 states. [2020-09-24 19:25:38,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:38,735 INFO L93 Difference]: Finished difference Result 1928 states and 2459 transitions. [2020-09-24 19:25:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:38,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-24 19:25:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:38,749 INFO L225 Difference]: With dead ends: 1928 [2020-09-24 19:25:38,749 INFO L226 Difference]: Without dead ends: 1206 [2020-09-24 19:25:38,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-24 19:25:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1036. [2020-09-24 19:25:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-24 19:25:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1250 transitions. [2020-09-24 19:25:38,830 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1250 transitions. Word has length 129 [2020-09-24 19:25:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:38,831 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1250 transitions. [2020-09-24 19:25:38,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1250 transitions. [2020-09-24 19:25:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 19:25:38,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:38,842 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:25:38,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:25:38,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:38,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1999519641, now seen corresponding path program 1 times [2020-09-24 19:25:38,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:38,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815399409] [2020-09-24 19:25:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:38,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 19:25:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-09-24 19:25:39,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:25:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:40,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:25:40,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:25:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:40,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:40,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:25:40,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:25:40,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:40,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:40,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815399409] [2020-09-24 19:25:40,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:40,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:25:40,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904442696] [2020-09-24 19:25:40,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:40,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:40,272 INFO L87 Difference]: Start difference. First operand 1036 states and 1250 transitions. Second operand 8 states. [2020-09-24 19:25:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:42,282 INFO L93 Difference]: Finished difference Result 2703 states and 3339 transitions. [2020-09-24 19:25:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:25:42,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-24 19:25:42,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:42,297 INFO L225 Difference]: With dead ends: 2703 [2020-09-24 19:25:42,298 INFO L226 Difference]: Without dead ends: 1527 [2020-09-24 19:25:42,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:25:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-09-24 19:25:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1324. [2020-09-24 19:25:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-09-24 19:25:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1558 transitions. [2020-09-24 19:25:42,370 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1558 transitions. Word has length 133 [2020-09-24 19:25:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:42,371 INFO L479 AbstractCegarLoop]: Abstraction has 1324 states and 1558 transitions. [2020-09-24 19:25:42,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1558 transitions. [2020-09-24 19:25:42,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 19:25:42,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:42,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:42,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:42,378 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash -247402504, now seen corresponding path program 1 times [2020-09-24 19:25:42,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:42,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446629203] [2020-09-24 19:25:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 19:25:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:25:43,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:43,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:25:43,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:25:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:43,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:43,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:43,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:25:43,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:43,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:25:43,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 19:25:43,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:43,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:43,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446629203] [2020-09-24 19:25:43,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:43,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:43,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194885498] [2020-09-24 19:25:43,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:43,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:43,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:43,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:43,771 INFO L87 Difference]: Start difference. First operand 1324 states and 1558 transitions. Second operand 7 states. [2020-09-24 19:25:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:47,051 INFO L93 Difference]: Finished difference Result 3852 states and 4896 transitions. [2020-09-24 19:25:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:25:47,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-09-24 19:25:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:47,070 INFO L225 Difference]: With dead ends: 3852 [2020-09-24 19:25:47,070 INFO L226 Difference]: Without dead ends: 2343 [2020-09-24 19:25:47,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2020-09-24 19:25:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2075. [2020-09-24 19:25:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2075 states. [2020-09-24 19:25:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2473 transitions. [2020-09-24 19:25:47,165 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2473 transitions. Word has length 154 [2020-09-24 19:25:47,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:47,165 INFO L479 AbstractCegarLoop]: Abstraction has 2075 states and 2473 transitions. [2020-09-24 19:25:47,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2473 transitions. [2020-09-24 19:25:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 19:25:47,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:47,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:47,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:47,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:47,174 INFO L82 PathProgramCache]: Analyzing trace with hash -131458993, now seen corresponding path program 1 times [2020-09-24 19:25:47,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:47,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014457067] [2020-09-24 19:25:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:47,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 19:25:48,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:25:48,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:25:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:25:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:48,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:25:48,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 19:25:48,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:25:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:25:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:25:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:25:48,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:25:48,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:48,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014457067] [2020-09-24 19:25:48,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:48,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:48,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134845033] [2020-09-24 19:25:48,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:48,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:48,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:48,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:48,645 INFO L87 Difference]: Start difference. First operand 2075 states and 2473 transitions. Second operand 8 states. [2020-09-24 19:25:48,934 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-24 19:25:52,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:52,146 INFO L93 Difference]: Finished difference Result 4019 states and 4803 transitions. [2020-09-24 19:25:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:25:52,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 159 [2020-09-24 19:25:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:52,159 INFO L225 Difference]: With dead ends: 4019 [2020-09-24 19:25:52,159 INFO L226 Difference]: Without dead ends: 2211 [2020-09-24 19:25:52,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:25:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2020-09-24 19:25:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1996. [2020-09-24 19:25:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2020-09-24 19:25:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2253 transitions. [2020-09-24 19:25:52,224 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2253 transitions. Word has length 159 [2020-09-24 19:25:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:52,224 INFO L479 AbstractCegarLoop]: Abstraction has 1996 states and 2253 transitions. [2020-09-24 19:25:52,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2253 transitions. [2020-09-24 19:25:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 19:25:52,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:52,230 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:52,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:25:52,231 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:52,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1106704956, now seen corresponding path program 1 times [2020-09-24 19:25:52,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:52,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102134790] [2020-09-24 19:25:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 19:25:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-24 19:25:53,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:25:53,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:25:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:53,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:53,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:53,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:53,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:53,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:25:53,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:53,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:53,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:53,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:53,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:25:53,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 19:25:53,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:53,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:53,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102134790] [2020-09-24 19:25:53,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:53,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:53,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505463265] [2020-09-24 19:25:53,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:53,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:53,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:53,733 INFO L87 Difference]: Start difference. First operand 1996 states and 2253 transitions. Second operand 8 states. [2020-09-24 19:25:54,227 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 19:25:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:57,401 INFO L93 Difference]: Finished difference Result 4729 states and 5526 transitions. [2020-09-24 19:25:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:57,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-24 19:25:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:57,419 INFO L225 Difference]: With dead ends: 4729 [2020-09-24 19:25:57,420 INFO L226 Difference]: Without dead ends: 3214 [2020-09-24 19:25:57,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2020-09-24 19:25:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 2612. [2020-09-24 19:25:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2020-09-24 19:25:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 2952 transitions. [2020-09-24 19:25:57,513 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 2952 transitions. Word has length 162 [2020-09-24 19:25:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:57,514 INFO L479 AbstractCegarLoop]: Abstraction has 2612 states and 2952 transitions. [2020-09-24 19:25:57,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 2952 transitions. [2020-09-24 19:25:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 19:25:57,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:57,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:57,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:25:57,521 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash -334117540, now seen corresponding path program 1 times [2020-09-24 19:25:57,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:57,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735856990] [2020-09-24 19:25:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:57,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:58,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 19:25:58,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-24 19:25:58,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-24 19:25:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:58,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:58,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:58,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:58,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 19:25:58,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:25:58,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:58,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:25:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 19:25:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:58,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:25:58,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 19:25:58,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:58,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:59,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735856990] [2020-09-24 19:25:59,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:59,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:59,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655693491] [2020-09-24 19:25:59,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:59,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:59,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:59,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:59,008 INFO L87 Difference]: Start difference. First operand 2612 states and 2952 transitions. Second operand 8 states. [2020-09-24 19:26:00,170 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 19:26:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:01,573 INFO L93 Difference]: Finished difference Result 5955 states and 6798 transitions. [2020-09-24 19:26:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:26:01,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-09-24 19:26:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:01,588 INFO L225 Difference]: With dead ends: 5955 [2020-09-24 19:26:01,588 INFO L226 Difference]: Without dead ends: 3367 [2020-09-24 19:26:01,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:26:01,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2020-09-24 19:26:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3029. [2020-09-24 19:26:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3029 states. [2020-09-24 19:26:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 3389 transitions. [2020-09-24 19:26:01,676 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 3389 transitions. Word has length 168 [2020-09-24 19:26:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:01,677 INFO L479 AbstractCegarLoop]: Abstraction has 3029 states and 3389 transitions. [2020-09-24 19:26:01,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 3389 transitions. [2020-09-24 19:26:01,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 19:26:01,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:01,686 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:01,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:26:01,686 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:01,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1061697879, now seen corresponding path program 1 times [2020-09-24 19:26:01,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:01,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836623899] [2020-09-24 19:26:01,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:01,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:02,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 19:26:02,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:02,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-24 19:26:02,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-09-24 19:26:02,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 19:26:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:02,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:02,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:02,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:02,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:02,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:26:02,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:03,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 19:26:03,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 19:26:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 19:26:03,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836623899] [2020-09-24 19:26:03,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:03,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:03,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074003983] [2020-09-24 19:26:03,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:03,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:03,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:03,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:03,149 INFO L87 Difference]: Start difference. First operand 3029 states and 3389 transitions. Second operand 5 states. [2020-09-24 19:26:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:04,850 INFO L93 Difference]: Finished difference Result 5723 states and 6454 transitions. [2020-09-24 19:26:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:04,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-09-24 19:26:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:04,873 INFO L225 Difference]: With dead ends: 5723 [2020-09-24 19:26:04,873 INFO L226 Difference]: Without dead ends: 3628 [2020-09-24 19:26:04,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2020-09-24 19:26:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 3309. [2020-09-24 19:26:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2020-09-24 19:26:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 3704 transitions. [2020-09-24 19:26:05,075 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 3704 transitions. Word has length 192 [2020-09-24 19:26:05,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:05,076 INFO L479 AbstractCegarLoop]: Abstraction has 3309 states and 3704 transitions. [2020-09-24 19:26:05,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 3704 transitions. [2020-09-24 19:26:05,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 19:26:05,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:05,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:05,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:26:05,092 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash -114028576, now seen corresponding path program 1 times [2020-09-24 19:26:05,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:05,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458694074] [2020-09-24 19:26:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 19:26:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:26:06,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-24 19:26:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:06,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:06,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:06,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:06,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:06,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 19:26:06,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 19:26:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:06,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 19:26:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:06,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:06,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:06,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:26:06,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:06,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:26:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:06,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458694074] [2020-09-24 19:26:06,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:06,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:06,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284601716] [2020-09-24 19:26:06,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:06,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:06,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:06,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:06,705 INFO L87 Difference]: Start difference. First operand 3309 states and 3704 transitions. Second operand 8 states. [2020-09-24 19:26:08,013 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-09-24 19:26:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:09,563 INFO L93 Difference]: Finished difference Result 6332 states and 7136 transitions. [2020-09-24 19:26:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:26:09,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-09-24 19:26:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:09,579 INFO L225 Difference]: With dead ends: 6332 [2020-09-24 19:26:09,579 INFO L226 Difference]: Without dead ends: 3637 [2020-09-24 19:26:09,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:26:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2020-09-24 19:26:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3318. [2020-09-24 19:26:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3318 states. [2020-09-24 19:26:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 3668 transitions. [2020-09-24 19:26:09,665 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 3668 transitions. Word has length 200 [2020-09-24 19:26:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:09,666 INFO L479 AbstractCegarLoop]: Abstraction has 3318 states and 3668 transitions. [2020-09-24 19:26:09,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 3668 transitions. [2020-09-24 19:26:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 19:26:09,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:09,675 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:09,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:26:09,676 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash 728492872, now seen corresponding path program 1 times [2020-09-24 19:26:09,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:09,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169238855] [2020-09-24 19:26:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 19:26:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:26:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:26:10,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:26:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:26:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:10,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:10,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:10,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:10,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:10,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:10,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:10,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:26:10,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:10,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:26:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:11,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:11,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:26:11,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 19:26:11,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:26:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 19:26:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:11,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:11,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:11,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:26:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 117 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 19:26:11,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169238855] [2020-09-24 19:26:11,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:11,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:11,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462655236] [2020-09-24 19:26:11,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:11,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:11,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:11,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:11,192 INFO L87 Difference]: Start difference. First operand 3318 states and 3668 transitions. Second operand 8 states. [2020-09-24 19:26:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:13,791 INFO L93 Difference]: Finished difference Result 6253 states and 6974 transitions. [2020-09-24 19:26:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:26:13,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-24 19:26:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:13,811 INFO L225 Difference]: With dead ends: 6253 [2020-09-24 19:26:13,811 INFO L226 Difference]: Without dead ends: 3859 [2020-09-24 19:26:13,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:26:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2020-09-24 19:26:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3745. [2020-09-24 19:26:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3745 states. [2020-09-24 19:26:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 4157 transitions. [2020-09-24 19:26:13,906 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 4157 transitions. Word has length 223 [2020-09-24 19:26:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:13,907 INFO L479 AbstractCegarLoop]: Abstraction has 3745 states and 4157 transitions. [2020-09-24 19:26:13,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 4157 transitions. [2020-09-24 19:26:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-24 19:26:13,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:13,922 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:13,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:26:13,923 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:13,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1964589244, now seen corresponding path program 1 times [2020-09-24 19:26:13,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:13,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134124810] [2020-09-24 19:26:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-24 19:26:15,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:15,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:26:15,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-24 19:26:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:15,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:15,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:15,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:15,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 19:26:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 19:26:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 19:26:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:26:15,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 19:26:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 19:26:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-24 19:26:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:15,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 19:26:15,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:26:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-24 19:26:15,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134124810] [2020-09-24 19:26:15,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:15,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:15,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804935604] [2020-09-24 19:26:15,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:15,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:15,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:15,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:15,635 INFO L87 Difference]: Start difference. First operand 3745 states and 4157 transitions. Second operand 8 states.