/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:07:16,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:07:16,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:07:16,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:07:16,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:07:16,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:07:16,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:07:16,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:07:16,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:07:16,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:07:16,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:07:16,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:07:16,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:07:16,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:07:16,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:07:16,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:07:16,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:07:16,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:07:16,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:07:16,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:07:16,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:07:16,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:07:16,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:07:16,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:07:16,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:07:16,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:07:16,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:07:16,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:07:16,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:07:16,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:07:16,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:07:16,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:07:16,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:07:16,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:07:16,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:07:16,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:07:16,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:07:16,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:07:16,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:07:16,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:07:16,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:07:16,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:07:16,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:07:16,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:07:16,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:07:16,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:07:16,396 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:07:16,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:07:16,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:07:16,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:07:16,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:07:16,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:07:16,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:07:16,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:07:16,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:07:16,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:07:16,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:07:16,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:07:16,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:07:16,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:07:16,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:07:16,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:07:16,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:07:16,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:07:16,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:07:16,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:07:16,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:07:16,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:07:16,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:07:16,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:07:16,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:07:16,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:07:16,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:07:16,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:07:16,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:07:16,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:07:16,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:07:16,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-14 21:07:16,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841b2cec1/677a965881834a06bec58dbd94f3ffb0/FLAG5ad927d5f [2020-10-14 21:07:17,533 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:07:17,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-14 21:07:17,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841b2cec1/677a965881834a06bec58dbd94f3ffb0/FLAG5ad927d5f [2020-10-14 21:07:17,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841b2cec1/677a965881834a06bec58dbd94f3ffb0 [2020-10-14 21:07:17,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:07:17,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:07:17,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:17,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:07:17,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:07:17,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:17" (1/1) ... [2020-10-14 21:07:17,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35de7d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:17, skipping insertion in model container [2020-10-14 21:07:17,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:17" (1/1) ... [2020-10-14 21:07:17,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:07:17,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:07:19,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:19,325 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:07:20,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:20,149 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:07:20,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20 WrapperNode [2020-10-14 21:07:20,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:20,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:07:20,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:07:20,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:07:20,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... [2020-10-14 21:07:20,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... [2020-10-14 21:07:20,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... [2020-10-14 21:07:20,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... [2020-10-14 21:07:20,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... [2020-10-14 21:07:20,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... [2020-10-14 21:07:20,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... [2020-10-14 21:07:20,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:07:20,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:07:20,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:07:20,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:07:20,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:07:20,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:07:20,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:07:20,496 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:07:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:07:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:07:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:07:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:07:20,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:07:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:07:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:07:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:07:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:07:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:07:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:07:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:07:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:07:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:07:25,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:07:25,014 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:07:25,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:25 BoogieIcfgContainer [2020-10-14 21:07:25,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:07:25,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:07:25,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:07:25,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:07:25,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:07:17" (1/3) ... [2020-10-14 21:07:25,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40452cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:25, skipping insertion in model container [2020-10-14 21:07:25,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:20" (2/3) ... [2020-10-14 21:07:25,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40452cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:25, skipping insertion in model container [2020-10-14 21:07:25,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:25" (3/3) ... [2020-10-14 21:07:25,033 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2020-10-14 21:07:25,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:07:25,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:07:25,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:07:25,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:07:25,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:07:25,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:07:25,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:07:25,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:07:25,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:07:25,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:07:25,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:07:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:07:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 21:07:25,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:25,138 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] [2020-10-14 21:07:25,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2140665405, now seen corresponding path program 1 times [2020-10-14 21:07:25,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:25,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274654999] [2020-10-14 21:07:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:25,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:25,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:07:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 21:07:25,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:25,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:07:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:07:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:25,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:25,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:07:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:25,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:25,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274654999] [2020-10-14 21:07:25,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:25,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:07:25,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867628210] [2020-10-14 21:07:25,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:07:25,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:25,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:07:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:07:25,952 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:07:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:33,660 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:07:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:07:33,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 21:07:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:33,692 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:07:33,692 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:07:33,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:33,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:07:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:07:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:07:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 21:07:33,841 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 72 [2020-10-14 21:07:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:33,844 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 21:07:33,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:07:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 21:07:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 21:07:33,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:33,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:33,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:07:33,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:33,860 INFO L82 PathProgramCache]: Analyzing trace with hash 863579141, now seen corresponding path program 1 times [2020-10-14 21:07:33,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:33,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684395960] [2020-10-14 21:07:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:35,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:35,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 21:07:35,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:35,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-14 21:07:35,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:35,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:07:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:07:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:35,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:35,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:35,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:35,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:35,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:35,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:35,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:35,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 21:07:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:35,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:07:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:07:35,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684395960] [2020-10-14 21:07:35,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:35,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:07:35,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529791048] [2020-10-14 21:07:35,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:07:35,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:07:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:35,435 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-14 21:07:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:44,424 INFO L93 Difference]: Finished difference Result 4720 states and 7724 transitions. [2020-10-14 21:07:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:07:44,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-10-14 21:07:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:44,446 INFO L225 Difference]: With dead ends: 4720 [2020-10-14 21:07:44,446 INFO L226 Difference]: Without dead ends: 3173 [2020-10-14 21:07:44,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:07:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-10-14 21:07:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3147. [2020-10-14 21:07:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3147 states. [2020-10-14 21:07:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4486 transitions. [2020-10-14 21:07:44,544 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4486 transitions. Word has length 147 [2020-10-14 21:07:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:44,545 INFO L479 AbstractCegarLoop]: Abstraction has 3147 states and 4486 transitions. [2020-10-14 21:07:44,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:07:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4486 transitions. [2020-10-14 21:07:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 21:07:44,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:44,548 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:44,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:07:44,549 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:44,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:44,549 INFO L82 PathProgramCache]: Analyzing trace with hash -347586115, now seen corresponding path program 1 times [2020-10-14 21:07:44,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:44,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466950236] [2020-10-14 21:07:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:45,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:45,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 21:07:45,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-14 21:07:45,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:45,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:07:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:07:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:45,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:45,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:45,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:45,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:07:45,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:45,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:45,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:45,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:45,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:07:45,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 21:07:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:45,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:07:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:07:45,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466950236] [2020-10-14 21:07:45,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:45,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:07:45,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572963979] [2020-10-14 21:07:45,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:07:45,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:45,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:07:45,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:45,897 INFO L87 Difference]: Start difference. First operand 3147 states and 4486 transitions. Second operand 6 states. [2020-10-14 21:07:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:55,353 INFO L93 Difference]: Finished difference Result 9549 states and 13905 transitions. [2020-10-14 21:07:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:07:55,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-10-14 21:07:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:55,390 INFO L225 Difference]: With dead ends: 9549 [2020-10-14 21:07:55,391 INFO L226 Difference]: Without dead ends: 6408 [2020-10-14 21:07:55,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:07:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6408 states. [2020-10-14 21:07:55,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6408 to 6367. [2020-10-14 21:07:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6367 states. [2020-10-14 21:07:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6367 states to 6367 states and 8232 transitions. [2020-10-14 21:07:55,590 INFO L78 Accepts]: Start accepts. Automaton has 6367 states and 8232 transitions. Word has length 151 [2020-10-14 21:07:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:55,593 INFO L479 AbstractCegarLoop]: Abstraction has 6367 states and 8232 transitions. [2020-10-14 21:07:55,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:07:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6367 states and 8232 transitions. [2020-10-14 21:07:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 21:07:55,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:55,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:07:55,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:07:55,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1262712401, now seen corresponding path program 1 times [2020-10-14 21:07:55,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:55,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237705963] [2020-10-14 21:07:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:56,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:56,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 21:07:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-14 21:07:56,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:56,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:07:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:56,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:56,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:07:56,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:56,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:56,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:56,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:07:56,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 21:07:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:56,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:07:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:56,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237705963] [2020-10-14 21:07:56,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:56,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:56,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653692261] [2020-10-14 21:07:56,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:56,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:56,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:56,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:56,820 INFO L87 Difference]: Start difference. First operand 6367 states and 8232 transitions. Second operand 7 states. [2020-10-14 21:08:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:07,573 INFO L93 Difference]: Finished difference Result 19422 states and 25554 transitions. [2020-10-14 21:08:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:08:07,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-14 21:08:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:07,630 INFO L225 Difference]: With dead ends: 19422 [2020-10-14 21:08:07,631 INFO L226 Difference]: Without dead ends: 13061 [2020-10-14 21:08:07,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:08:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13061 states. [2020-10-14 21:08:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13061 to 11372. [2020-10-14 21:08:07,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11372 states. [2020-10-14 21:08:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 14355 transitions. [2020-10-14 21:08:07,946 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 14355 transitions. Word has length 157 [2020-10-14 21:08:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:07,947 INFO L479 AbstractCegarLoop]: Abstraction has 11372 states and 14355 transitions. [2020-10-14 21:08:07,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 14355 transitions. [2020-10-14 21:08:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 21:08:07,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:07,954 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:07,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:08:07,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:07,955 INFO L82 PathProgramCache]: Analyzing trace with hash -665193256, now seen corresponding path program 1 times [2020-10-14 21:08:07,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:07,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316683779] [2020-10-14 21:08:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:09,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:09,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 21:08:09,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1702 [2020-10-14 21:08:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:09,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:08:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:09,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:09,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:09,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:09,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:08:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:09,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:09,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:08:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 21:08:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:10,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:08:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:08:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:10,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316683779] [2020-10-14 21:08:10,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:08:10,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:08:10,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410957821] [2020-10-14 21:08:10,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:10,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:10,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:10,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:10,442 INFO L87 Difference]: Start difference. First operand 11372 states and 14355 transitions. Second operand 7 states. [2020-10-14 21:08:21,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:21,642 INFO L93 Difference]: Finished difference Result 27820 states and 34963 transitions. [2020-10-14 21:08:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:08:21,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-14 21:08:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:21,704 INFO L225 Difference]: With dead ends: 27820 [2020-10-14 21:08:21,705 INFO L226 Difference]: Without dead ends: 16454 [2020-10-14 21:08:21,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:08:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16454 states. [2020-10-14 21:08:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16454 to 15410. [2020-10-14 21:08:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15410 states. [2020-10-14 21:08:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15410 states to 15410 states and 18807 transitions. [2020-10-14 21:08:22,115 INFO L78 Accepts]: Start accepts. Automaton has 15410 states and 18807 transitions. Word has length 220 [2020-10-14 21:08:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:22,117 INFO L479 AbstractCegarLoop]: Abstraction has 15410 states and 18807 transitions. [2020-10-14 21:08:22,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15410 states and 18807 transitions. [2020-10-14 21:08:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 21:08:22,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:22,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:08:22,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:08:22,122 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:22,123 INFO L82 PathProgramCache]: Analyzing trace with hash -736537431, now seen corresponding path program 1 times [2020-10-14 21:08:22,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:22,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195523618] [2020-10-14 21:08:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:24,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 21:08:24,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:08:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-14 21:08:24,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:24,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 21:08:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:24,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:08:24,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:24,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:24,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:24,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 21:08:24,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:24,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:24,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 21:08:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:24,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:08:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:08:24,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195523618] [2020-10-14 21:08:24,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:24,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:24,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533708562] [2020-10-14 21:08:25,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:08:25,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:25,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:08:25,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:25,001 INFO L87 Difference]: Start difference. First operand 15410 states and 18807 transitions. Second operand 6 states. [2020-10-14 21:08:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:39,994 INFO L93 Difference]: Finished difference Result 42074 states and 54902 transitions. [2020-10-14 21:08:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:08:39,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 292 [2020-10-14 21:08:39,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:40,197 INFO L225 Difference]: With dead ends: 42074 [2020-10-14 21:08:40,197 INFO L226 Difference]: Without dead ends: 26670 [2020-10-14 21:08:40,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26670 states. [2020-10-14 21:08:40,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26670 to 26562. [2020-10-14 21:08:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26562 states. [2020-10-14 21:08:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26562 states to 26562 states and 33249 transitions. [2020-10-14 21:08:40,823 INFO L78 Accepts]: Start accepts. Automaton has 26562 states and 33249 transitions. Word has length 292 [2020-10-14 21:08:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:40,824 INFO L479 AbstractCegarLoop]: Abstraction has 26562 states and 33249 transitions. [2020-10-14 21:08:40,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:08:40,825 INFO L276 IsEmpty]: Start isEmpty. Operand 26562 states and 33249 transitions. [2020-10-14 21:08:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 21:08:40,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:40,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:40,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:08:40,833 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:40,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:40,833 INFO L82 PathProgramCache]: Analyzing trace with hash 261238517, now seen corresponding path program 1 times [2020-10-14 21:08:40,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:40,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284390339] [2020-10-14 21:08:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:42,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 21:08:42,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-14 21:08:42,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:42,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:08:42,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 21:08:42,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:42,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:08:42,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:42,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:42,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:08:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 21:08:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:42,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:08:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:08:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:42,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:08:42,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:08:42,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:42,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:08:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:08:43,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284390339] [2020-10-14 21:08:43,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:43,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:43,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121436573] [2020-10-14 21:08:43,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:08:43,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:43,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:08:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:43,010 INFO L87 Difference]: Start difference. First operand 26562 states and 33249 transitions. Second operand 6 states. [2020-10-14 21:09:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:01,991 INFO L93 Difference]: Finished difference Result 97056 states and 128962 transitions. [2020-10-14 21:09:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:09:01,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2020-10-14 21:09:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:02,218 INFO L225 Difference]: With dead ends: 97056 [2020-10-14 21:09:02,220 INFO L226 Difference]: Without dead ends: 69712 [2020-10-14 21:09:02,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:09:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69712 states. [2020-10-14 21:09:03,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69712 to 66592. [2020-10-14 21:09:03,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66592 states. [2020-10-14 21:09:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66592 states to 66592 states and 87898 transitions. [2020-10-14 21:09:03,756 INFO L78 Accepts]: Start accepts. Automaton has 66592 states and 87898 transitions. Word has length 310 [2020-10-14 21:09:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:03,757 INFO L479 AbstractCegarLoop]: Abstraction has 66592 states and 87898 transitions. [2020-10-14 21:09:03,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:09:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 66592 states and 87898 transitions. [2020-10-14 21:09:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-14 21:09:03,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:03,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:03,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:09:03,767 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash -763884988, now seen corresponding path program 1 times [2020-10-14 21:09:03,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:03,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026802517] [2020-10-14 21:09:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:05,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:05,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-14 21:09:05,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:05,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1865 [2020-10-14 21:09:05,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:05,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 21:09:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:09:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:09:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:05,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:05,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:05,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:09:05,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:05,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:05,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:05,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:05,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:09:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 21:09:05,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:05,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:09:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:06,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:09:06,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 21:09:06,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:06,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:09:06,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 21:09:06,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026802517] [2020-10-14 21:09:06,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:06,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:09:06,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487192834] [2020-10-14 21:09:06,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:09:06,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:09:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:09:06,279 INFO L87 Difference]: Start difference. First operand 66592 states and 87898 transitions. Second operand 5 states. [2020-10-14 21:09:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:19,085 INFO L93 Difference]: Finished difference Result 158015 states and 217346 transitions. [2020-10-14 21:09:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:09:19,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2020-10-14 21:09:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:19,408 INFO L225 Difference]: With dead ends: 158015 [2020-10-14 21:09:19,409 INFO L226 Difference]: Without dead ends: 92196 [2020-10-14 21:09:19,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:09:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92196 states. [2020-10-14 21:09:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92196 to 86793. [2020-10-14 21:09:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86793 states. [2020-10-14 21:09:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86793 states to 86793 states and 113102 transitions. [2020-10-14 21:09:21,575 INFO L78 Accepts]: Start accepts. Automaton has 86793 states and 113102 transitions. Word has length 357 [2020-10-14 21:09:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:21,576 INFO L479 AbstractCegarLoop]: Abstraction has 86793 states and 113102 transitions. [2020-10-14 21:09:21,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:09:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 86793 states and 113102 transitions. [2020-10-14 21:09:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-14 21:09:21,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:21,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:21,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:09:21,588 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash -2096733004, now seen corresponding path program 1 times [2020-10-14 21:09:21,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:21,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523115073] [2020-10-14 21:09:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:23,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:23,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-14 21:09:23,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2308 [2020-10-14 21:09:23,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:23,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:09:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:09:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:24,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:24,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:24,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:24,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:09:24,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:24,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:24,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:24,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:09:24,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 21:09:24,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:24,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:09:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:09:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:24,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:24,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:09:24,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 21:09:24,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:24,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:09:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:09:24,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523115073] [2020-10-14 21:09:24,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:24,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:24,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348423170] [2020-10-14 21:09:24,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:24,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:24,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:24,858 INFO L87 Difference]: Start difference. First operand 86793 states and 113102 transitions. Second operand 7 states. [2020-10-14 21:09:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:45,790 INFO L93 Difference]: Finished difference Result 179606 states and 236440 transitions. [2020-10-14 21:09:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:09:45,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-14 21:09:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:46,102 INFO L225 Difference]: With dead ends: 179606 [2020-10-14 21:09:46,102 INFO L226 Difference]: Without dead ends: 93586 [2020-10-14 21:09:46,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:09:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93586 states. [2020-10-14 21:09:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93586 to 93473. [2020-10-14 21:09:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93473 states. [2020-10-14 21:09:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93473 states to 93473 states and 121678 transitions. [2020-10-14 21:09:48,339 INFO L78 Accepts]: Start accepts. Automaton has 93473 states and 121678 transitions. Word has length 365 [2020-10-14 21:09:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:48,339 INFO L479 AbstractCegarLoop]: Abstraction has 93473 states and 121678 transitions. [2020-10-14 21:09:48,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:09:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 93473 states and 121678 transitions. [2020-10-14 21:09:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-14 21:09:48,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:48,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:48,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:09:48,347 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:48,348 INFO L82 PathProgramCache]: Analyzing trace with hash -700973460, now seen corresponding path program 1 times [2020-10-14 21:09:48,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:48,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758301029] [2020-10-14 21:09:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:50,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:50,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-14 21:09:50,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2085 [2020-10-14 21:09:50,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:50,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:09:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:09:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:09:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:51,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:51,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:51,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:51,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:51,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:09:51,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:51,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:09:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:51,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:51,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:09:51,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:51,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 21:09:51,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:51,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:51,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:51,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:09:51,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:09:52,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758301029] [2020-10-14 21:09:52,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:52,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:09:52,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347118481] [2020-10-14 21:09:52,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:09:52,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:52,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:09:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:09:52,235 INFO L87 Difference]: Start difference. First operand 93473 states and 121678 transitions. Second operand 8 states. [2020-10-14 21:10:19,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:19,773 INFO L93 Difference]: Finished difference Result 200466 states and 265942 transitions. [2020-10-14 21:10:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 21:10:19,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 369 [2020-10-14 21:10:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:20,095 INFO L225 Difference]: With dead ends: 200466 [2020-10-14 21:10:20,096 INFO L226 Difference]: Without dead ends: 107766 [2020-10-14 21:10:20,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:10:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107766 states. [2020-10-14 21:10:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107766 to 106913. [2020-10-14 21:10:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106913 states. [2020-10-14 21:10:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106913 states to 106913 states and 137806 transitions. [2020-10-14 21:10:24,712 INFO L78 Accepts]: Start accepts. Automaton has 106913 states and 137806 transitions. Word has length 369 [2020-10-14 21:10:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:24,713 INFO L479 AbstractCegarLoop]: Abstraction has 106913 states and 137806 transitions. [2020-10-14 21:10:24,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:10:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 106913 states and 137806 transitions. [2020-10-14 21:10:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-14 21:10:24,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:24,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:10:24,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:10:24,722 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:24,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:24,722 INFO L82 PathProgramCache]: Analyzing trace with hash -880380495, now seen corresponding path program 1 times [2020-10-14 21:10:24,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:24,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022015293] [2020-10-14 21:10:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:24,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-14 21:10:29,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4213 [2020-10-14 21:10:29,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:10:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:10:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:10:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:29,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:29,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:10:29,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:10:29,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 21:10:29,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:10:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:10:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:10:29,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 21:10:29,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:10:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:10:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:29,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:10:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:29,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:10:29,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:10:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 387 proven. 72 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:10:29,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022015293] [2020-10-14 21:10:29,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:29,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 21:10:29,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515666228] [2020-10-14 21:10:29,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 21:10:29,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:29,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 21:10:29,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:10:29,954 INFO L87 Difference]: Start difference. First operand 106913 states and 137806 transitions. Second operand 11 states.