/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/Problem19_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:07:27,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:07:27,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:07:27,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:07:27,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:07:27,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:07:27,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:07:27,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:07:27,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:07:27,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:07:27,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:07:27,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:07:27,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:07:27,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:07:27,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:07:27,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:07:27,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:07:27,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:07:27,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:07:27,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:07:27,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:07:27,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:07:27,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:07:27,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:07:27,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:07:27,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:07:27,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:07:27,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:07:27,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:07:27,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:07:27,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:07:27,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:07:27,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:07:27,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:07:27,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:07:27,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:07:27,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:07:27,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:07:27,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:07:27,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:07:27,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:07:27,502 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 23:07:27,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:07:27,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:07:27,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:07:27,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:07:27,545 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:07:27,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:07:27,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:07:27,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:07:27,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:07:27,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:07:27,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:07:27,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:07:27,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:07:27,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:07:27,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:07:27,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:07:27,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:07:27,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:07:27,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:07:27,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:07:27,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:07:27,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:07:27,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:07:27,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:07:27,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:07:27,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:07:27,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:07:27,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:07:27,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:07:27,553 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 23:07:27,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:07:27,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:07:27,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:07:27,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:07:27,940 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:07:27,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label42.c [2020-10-14 23:07:28,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52baff0ae/06b6a9fc5ab0409a918bc5d9a0083273/FLAGd1b3eb486 [2020-10-14 23:07:29,138 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:07:29,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label42.c [2020-10-14 23:07:29,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52baff0ae/06b6a9fc5ab0409a918bc5d9a0083273/FLAGd1b3eb486 [2020-10-14 23:07:29,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52baff0ae/06b6a9fc5ab0409a918bc5d9a0083273 [2020-10-14 23:07:29,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:07:29,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:07:29,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:07:29,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:07:29,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:07:29,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:07:29" (1/1) ... [2020-10-14 23:07:29,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187bf361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:29, skipping insertion in model container [2020-10-14 23:07:29,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:07:29" (1/1) ... [2020-10-14 23:07:29,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:07:29,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:07:32,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:07:32,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:07:33,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:07:33,841 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:07:33,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33 WrapperNode [2020-10-14 23:07:33,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:07:33,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:07:33,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:07:33,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:07:33,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (1/1) ... [2020-10-14 23:07:33,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (1/1) ... [2020-10-14 23:07:33,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (1/1) ... [2020-10-14 23:07:33,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (1/1) ... [2020-10-14 23:07:34,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (1/1) ... [2020-10-14 23:07:34,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (1/1) ... [2020-10-14 23:07:34,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (1/1) ... [2020-10-14 23:07:34,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:07:34,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:07:34,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:07:34,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:07:34,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (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 23:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:07:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:07:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:07:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:07:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:07:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:07:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:07:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:07:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:07:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:07:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:07:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:07:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:07:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:07:50,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:07:50,198 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:07:50,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:07:50 BoogieIcfgContainer [2020-10-14 23:07:50,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:07:50,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:07:50,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:07:50,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:07:50,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:07:29" (1/3) ... [2020-10-14 23:07:50,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180d76eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:07:50, skipping insertion in model container [2020-10-14 23:07:50,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:07:33" (2/3) ... [2020-10-14 23:07:50,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180d76eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:07:50, skipping insertion in model container [2020-10-14 23:07:50,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:07:50" (3/3) ... [2020-10-14 23:07:50,230 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label42.c [2020-10-14 23:07:50,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:07:50,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:07:50,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:07:50,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:07:50,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:07:50,329 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:07:50,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:07:50,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:07:50,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:07:50,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:07:50,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:07:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:07:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 23:07:50,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:07:50,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:07:50,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:07:50,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:07:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash -448641052, now seen corresponding path program 1 times [2020-10-14 23:07:50,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:07:50,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556813052] [2020-10-14 23:07:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:07:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:51,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:51,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:07:51,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 23:07:51,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:51,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:07:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:07:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:07:51,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:07:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:07:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:07:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:07:51,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:07:51,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:07:51,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:07:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:07:51,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:07:51,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:07:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:07:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:07:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:07:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:07:51,176 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 23:07:51,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556813052] [2020-10-14 23:07:51,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:07:51,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:07:51,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152510193] [2020-10-14 23:07:51,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:07:51,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:07:51,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:07:51,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:07:51,218 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:08:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:20,131 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 23:08:20,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:08:20,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 23:08:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:20,179 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 23:08:20,179 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 23:08:20,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:08:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 23:08:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 23:08:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 23:08:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 23:08:20,485 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 15 [2020-10-14 23:08:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:20,486 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 23:08:20,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:08:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 23:08:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 23:08:20,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:20,497 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:08:20,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:08:20,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:20,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:20,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1279466744, now seen corresponding path program 1 times [2020-10-14 23:08:20,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:20,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238239647] [2020-10-14 23:08:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:20,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:21,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 23:08:21,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:08:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-14 23:08:21,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:21,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:08:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:08:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:08:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:08:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:08:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:21,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:21,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:08:21,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:08:21,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:21,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:08:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:08:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:08:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:22,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:22,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:08:22,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:22,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:08:22,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:22,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:08:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:08:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:08:22,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:08:22,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238239647] [2020-10-14 23:08:22,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:08:22,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:08:22,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500423273] [2020-10-14 23:08:22,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:08:22,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:08:22,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:08:22,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:08:22,311 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 7 states. [2020-10-14 23:09:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:09:03,862 INFO L93 Difference]: Finished difference Result 9557 states and 16477 transitions. [2020-10-14 23:09:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:09:03,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-14 23:09:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:09:03,907 INFO L225 Difference]: With dead ends: 9557 [2020-10-14 23:09:03,907 INFO L226 Difference]: Without dead ends: 6364 [2020-10-14 23:09:03,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:09:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2020-10-14 23:09:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 6256. [2020-10-14 23:09:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6256 states. [2020-10-14 23:09:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6256 states to 6256 states and 10366 transitions. [2020-10-14 23:09:04,179 INFO L78 Accepts]: Start accepts. Automaton has 6256 states and 10366 transitions. Word has length 87 [2020-10-14 23:09:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:09:04,180 INFO L479 AbstractCegarLoop]: Abstraction has 6256 states and 10366 transitions. [2020-10-14 23:09:04,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:09:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6256 states and 10366 transitions. [2020-10-14 23:09:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 23:09:04,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:09:04,187 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:09:04,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:09:04,188 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:09:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:09:04,189 INFO L82 PathProgramCache]: Analyzing trace with hash 764342222, now seen corresponding path program 1 times [2020-10-14 23:09:04,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:09:04,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775077165] [2020-10-14 23:09:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:09:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 23:09:05,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:09:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-14 23:09:05,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:05,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:09:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 23:09:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:05,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:09:05,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:05,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:05,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:05,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:09:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:05,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:09:05,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 23:09:05,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:05,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:09:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:09:05,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775077165] [2020-10-14 23:09:05,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:09:05,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:09:05,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574434219] [2020-10-14 23:09:05,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:09:05,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:05,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:09:05,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:09:05,816 INFO L87 Difference]: Start difference. First operand 6256 states and 10366 transitions. Second operand 7 states. [2020-10-14 23:09:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:09:54,788 INFO L93 Difference]: Finished difference Result 18562 states and 31069 transitions. [2020-10-14 23:09:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:09:54,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-14 23:09:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:09:54,865 INFO L225 Difference]: With dead ends: 18562 [2020-10-14 23:09:54,865 INFO L226 Difference]: Without dead ends: 12312 [2020-10-14 23:09:54,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:09:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12312 states. [2020-10-14 23:09:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12312 to 12150. [2020-10-14 23:09:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12150 states. [2020-10-14 23:09:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12150 states to 12150 states and 17407 transitions. [2020-10-14 23:09:55,270 INFO L78 Accepts]: Start accepts. Automaton has 12150 states and 17407 transitions. Word has length 90 [2020-10-14 23:09:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:09:55,272 INFO L479 AbstractCegarLoop]: Abstraction has 12150 states and 17407 transitions. [2020-10-14 23:09:55,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:09:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12150 states and 17407 transitions. [2020-10-14 23:09:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:09:55,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:09:55,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:09:55,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:09:55,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:09:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:09:55,285 INFO L82 PathProgramCache]: Analyzing trace with hash 619319664, now seen corresponding path program 1 times [2020-10-14 23:09:55,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:09:55,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406839364] [2020-10-14 23:09:55,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:09:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:55,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:56,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 23:09:56,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:09:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1245 [2020-10-14 23:09:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:56,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:09:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:09:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:56,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:09:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:56,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:56,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:09:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:56,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:57,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:57,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:09:57,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 23:09:57,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:09:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:09:57,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406839364] [2020-10-14 23:09:57,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:09:57,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:09:57,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302442945] [2020-10-14 23:09:57,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:09:57,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:57,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:09:57,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:09:57,244 INFO L87 Difference]: Start difference. First operand 12150 states and 17407 transitions. Second operand 7 states. [2020-10-14 23:11:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:11:12,579 INFO L93 Difference]: Finished difference Result 30775 states and 44309 transitions. [2020-10-14 23:11:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:11:12,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-14 23:11:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:11:12,668 INFO L225 Difference]: With dead ends: 30775 [2020-10-14 23:11:12,668 INFO L226 Difference]: Without dead ends: 18631 [2020-10-14 23:11:12,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:11:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18631 states. [2020-10-14 23:11:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18631 to 17914. [2020-10-14 23:11:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17914 states. [2020-10-14 23:11:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17914 states to 17914 states and 23665 transitions. [2020-10-14 23:11:13,139 INFO L78 Accepts]: Start accepts. Automaton has 17914 states and 23665 transitions. Word has length 116 [2020-10-14 23:11:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:11:13,140 INFO L479 AbstractCegarLoop]: Abstraction has 17914 states and 23665 transitions. [2020-10-14 23:11:13,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:11:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 17914 states and 23665 transitions. [2020-10-14 23:11:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 23:11:13,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:11:13,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:11:13,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:11:13,153 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:11:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:11:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1295937579, now seen corresponding path program 1 times [2020-10-14 23:11:13,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:11:13,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744355252] [2020-10-14 23:11:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:11:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:15,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 23:11:15,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:11:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1889 [2020-10-14 23:11:15,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:15,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:11:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:11:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-14 23:11:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:11:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:15,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:15,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:15,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:11:15,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:15,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:11:15,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:15,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:11:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:11:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:11:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:11:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:15,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:15,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 23:11:15,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 23:11:15,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:15,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:11:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:11:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-14 23:11:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:11:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:11:16,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744355252] [2020-10-14 23:11:16,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:11:16,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:11:16,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629476350] [2020-10-14 23:11:16,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:11:16,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:11:16,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:11:16,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:11:16,131 INFO L87 Difference]: Start difference. First operand 17914 states and 23665 transitions. Second operand 7 states.