/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:01:29,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:01:29,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:01:29,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:01:29,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:01:29,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:01:29,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:01:29,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:01:29,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:01:29,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:01:29,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:01:29,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:01:29,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:01:29,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:01:29,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:01:29,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:01:29,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:01:29,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:01:29,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:01:29,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:01:29,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:01:29,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:01:29,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:01:29,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:01:29,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:01:29,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:01:29,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:01:29,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:01:29,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:01:29,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:01:29,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:01:29,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:01:29,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:01:29,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:01:29,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:01:29,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:01:29,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:01:29,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:01:29,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:01:29,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:01:29,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:01:29,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:01:29,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:01:29,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:01:29,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:01:29,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:01:29,540 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:01:29,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:01:29,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:01:29,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:01:29,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:01:29,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:01:29,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:01:29,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:01:29,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:01:29,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:01:29,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:01:29,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:01:29,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:01:29,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:01:29,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:01:29,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:01:29,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:01:29,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:01:29,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:01:29,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:01:29,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:01:29,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:01:29,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:01:29,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:01:29,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:01:29,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:01:29,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:01:29,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:01:29,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:01:29,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:01:29,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:01:29,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18.c [2020-10-14 03:01:29,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb57822c0/b4b952544711421eb005fe052e4dd55a/FLAGced37b717 [2020-10-14 03:01:30,734 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:01:30,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label18.c [2020-10-14 03:01:30,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb57822c0/b4b952544711421eb005fe052e4dd55a/FLAGced37b717 [2020-10-14 03:01:30,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb57822c0/b4b952544711421eb005fe052e4dd55a [2020-10-14 03:01:30,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:01:30,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:01:30,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:01:30,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:01:30,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:01:30,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:01:30" (1/1) ... [2020-10-14 03:01:30,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:30, skipping insertion in model container [2020-10-14 03:01:30,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:01:30" (1/1) ... [2020-10-14 03:01:30,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:01:31,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:01:32,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:01:32,847 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:01:33,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:01:33,635 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:01:33,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33 WrapperNode [2020-10-14 03:01:33,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:01:33,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:01:33,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:01:33,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:01:33,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (1/1) ... [2020-10-14 03:01:33,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (1/1) ... [2020-10-14 03:01:33,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (1/1) ... [2020-10-14 03:01:33,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (1/1) ... [2020-10-14 03:01:33,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (1/1) ... [2020-10-14 03:01:33,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (1/1) ... [2020-10-14 03:01:34,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (1/1) ... [2020-10-14 03:01:34,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:01:34,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:01:34,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:01:34,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:01:34,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (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 03:01:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:01:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:01:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:01:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:01:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:01:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:01:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:01:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:01:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:01:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:01:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:01:45,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:01:45,377 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:01:45,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:01:45 BoogieIcfgContainer [2020-10-14 03:01:45,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:01:45,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:01:45,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:01:45,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:01:45,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:01:30" (1/3) ... [2020-10-14 03:01:45,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fa1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:01:45, skipping insertion in model container [2020-10-14 03:01:45,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:01:33" (2/3) ... [2020-10-14 03:01:45,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fa1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:01:45, skipping insertion in model container [2020-10-14 03:01:45,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:01:45" (3/3) ... [2020-10-14 03:01:45,411 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label18.c [2020-10-14 03:01:45,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:01:45,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:01:45,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:01:45,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:01:45,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:01:45,477 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:01:45,477 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:01:45,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:01:45,477 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:01:45,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:01:45,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:01:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:01:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 03:01:45,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:45,530 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] [2020-10-14 03:01:45,531 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:45,538 INFO L82 PathProgramCache]: Analyzing trace with hash 597964976, now seen corresponding path program 1 times [2020-10-14 03:01:45,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:45,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586548484] [2020-10-14 03:01:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:46,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:46,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:01:46,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-14 03:01:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:46,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:01:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:01:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:01:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:01:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:01:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:46,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:46,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:01:46,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:46,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 03:01:46,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:46,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:01:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:01:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:01:46,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586548484] [2020-10-14 03:01:46,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:01:46,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:01:46,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939816954] [2020-10-14 03:01:46,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:01:46,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:01:46,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:01:46,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:01:46,635 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:02:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:15,344 INFO L93 Difference]: Finished difference Result 4116 states and 7691 transitions. [2020-10-14 03:02:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:02:15,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 03:02:15,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:15,390 INFO L225 Difference]: With dead ends: 4116 [2020-10-14 03:02:15,390 INFO L226 Difference]: Without dead ends: 2899 [2020-10-14 03:02:15,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:02:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-14 03:02:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2762. [2020-10-14 03:02:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-14 03:02:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4546 transitions. [2020-10-14 03:02:15,649 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4546 transitions. Word has length 69 [2020-10-14 03:02:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:15,651 INFO L479 AbstractCegarLoop]: Abstraction has 2762 states and 4546 transitions. [2020-10-14 03:02:15,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4546 transitions. [2020-10-14 03:02:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 03:02:15,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:15,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:02:15,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:02:15,676 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:15,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1418368328, now seen corresponding path program 1 times [2020-10-14 03:02:15,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:15,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992817743] [2020-10-14 03:02:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:17,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:17,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 03:02:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:02:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-10-14 03:02:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:17,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:02:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:02:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:02:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:17,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:17,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:17,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:02:17,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:17,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:02:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:02:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 03:02:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:17,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:02:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:02:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:18,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992817743] [2020-10-14 03:02:18,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:02:18,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:02:18,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832788437] [2020-10-14 03:02:18,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:02:18,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:18,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:02:18,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:02:18,047 INFO L87 Difference]: Start difference. First operand 2762 states and 4546 transitions. Second operand 5 states. [2020-10-14 03:02:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:36,278 INFO L93 Difference]: Finished difference Result 8037 states and 13368 transitions. [2020-10-14 03:02:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:36,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 03:02:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:36,330 INFO L225 Difference]: With dead ends: 8037 [2020-10-14 03:02:36,331 INFO L226 Difference]: Without dead ends: 5281 [2020-10-14 03:02:36,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2020-10-14 03:02:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5258. [2020-10-14 03:02:36,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5258 states. [2020-10-14 03:02:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 8189 transitions. [2020-10-14 03:02:36,519 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 8189 transitions. Word has length 139 [2020-10-14 03:02:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:36,522 INFO L479 AbstractCegarLoop]: Abstraction has 5258 states and 8189 transitions. [2020-10-14 03:02:36,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 8189 transitions. [2020-10-14 03:02:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 03:02:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:36,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:02:36,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:02:36,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash -462570439, now seen corresponding path program 1 times [2020-10-14 03:02:36,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:36,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055833433] [2020-10-14 03:02:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:38,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:38,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 03:02:38,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:02:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-14 03:02:38,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:38,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 03:02:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:02:38,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:02:38,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:38,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:02:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 03:02:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:38,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:02:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:38,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055833433] [2020-10-14 03:02:38,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:02:38,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:02:38,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911503248] [2020-10-14 03:02:38,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:02:38,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:38,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:02:38,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:02:38,574 INFO L87 Difference]: Start difference. First operand 5258 states and 8189 transitions. Second operand 5 states. [2020-10-14 03:02:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:54,103 INFO L93 Difference]: Finished difference Result 12970 states and 20660 transitions. [2020-10-14 03:02:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:54,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-14 03:02:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:54,229 INFO L225 Difference]: With dead ends: 12970 [2020-10-14 03:02:54,229 INFO L226 Difference]: Without dead ends: 7718 [2020-10-14 03:02:54,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2020-10-14 03:02:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7700. [2020-10-14 03:02:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7700 states. [2020-10-14 03:02:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7700 states to 7700 states and 12118 transitions. [2020-10-14 03:02:54,467 INFO L78 Accepts]: Start accepts. Automaton has 7700 states and 12118 transitions. Word has length 178 [2020-10-14 03:02:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:54,473 INFO L479 AbstractCegarLoop]: Abstraction has 7700 states and 12118 transitions. [2020-10-14 03:02:54,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 7700 states and 12118 transitions. [2020-10-14 03:02:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 03:02:54,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:54,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:02:54,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:02:54,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1706216214, now seen corresponding path program 1 times [2020-10-14 03:02:54,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:54,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709568064] [2020-10-14 03:02:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:56,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:02:56,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:02:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-14 03:02:56,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:56,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 03:02:56,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:02:56,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:56,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:56,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:56,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:02:56,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:56,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:56,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:56,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:56,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 03:02:56,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 03:02:56,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:56,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:56,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:02:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:56,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709568064] [2020-10-14 03:02:56,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:02:56,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:02:56,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095036876] [2020-10-14 03:02:56,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:02:56,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:56,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:02:56,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:02:56,649 INFO L87 Difference]: Start difference. First operand 7700 states and 12118 transitions. Second operand 5 states. [2020-10-14 03:03:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:18,311 INFO L93 Difference]: Finished difference Result 17924 states and 29398 transitions. [2020-10-14 03:03:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:18,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-14 03:03:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:18,378 INFO L225 Difference]: With dead ends: 17924 [2020-10-14 03:03:18,378 INFO L226 Difference]: Without dead ends: 12683 [2020-10-14 03:03:18,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:03:18,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2020-10-14 03:03:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 12603. [2020-10-14 03:03:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12603 states. [2020-10-14 03:03:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12603 states to 12603 states and 20089 transitions. [2020-10-14 03:03:18,855 INFO L78 Accepts]: Start accepts. Automaton has 12603 states and 20089 transitions. Word has length 191 [2020-10-14 03:03:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:18,856 INFO L479 AbstractCegarLoop]: Abstraction has 12603 states and 20089 transitions. [2020-10-14 03:03:18,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:03:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12603 states and 20089 transitions. [2020-10-14 03:03:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 03:03:18,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:18,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:18,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:03:18,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:18,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1310349132, now seen corresponding path program 1 times [2020-10-14 03:03:18,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:18,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423665019] [2020-10-14 03:03:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:20,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:20,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 03:03:20,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:03:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1384 [2020-10-14 03:03:20,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:20,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:20,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-14 03:03:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:03:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:20,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:20,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:20,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:20,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:03:20,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:20,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:20,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:20,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:20,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 03:03:20,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 03:03:20,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:20,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:03:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 03:03:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:20,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423665019] [2020-10-14 03:03:20,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:20,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:20,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881189965] [2020-10-14 03:03:20,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:20,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:20,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:20,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:20,732 INFO L87 Difference]: Start difference. First operand 12603 states and 20089 transitions. Second operand 5 states. [2020-10-14 03:03:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:43,924 INFO L93 Difference]: Finished difference Result 36578 states and 60174 transitions. [2020-10-14 03:03:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:43,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-14 03:03:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:44,041 INFO L225 Difference]: With dead ends: 36578 [2020-10-14 03:03:44,041 INFO L226 Difference]: Without dead ends: 23981 [2020-10-14 03:03:44,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:03:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23981 states. [2020-10-14 03:03:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23981 to 23976. [2020-10-14 03:03:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23976 states. [2020-10-14 03:03:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23976 states to 23976 states and 36356 transitions. [2020-10-14 03:03:44,816 INFO L78 Accepts]: Start accepts. Automaton has 23976 states and 36356 transitions. Word has length 233 [2020-10-14 03:03:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:44,817 INFO L479 AbstractCegarLoop]: Abstraction has 23976 states and 36356 transitions. [2020-10-14 03:03:44,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:03:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 23976 states and 36356 transitions. [2020-10-14 03:03:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 03:03:44,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:44,826 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:44,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:03:44,827 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1212320560, now seen corresponding path program 1 times [2020-10-14 03:03:44,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:44,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461509439] [2020-10-14 03:03:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 03:03:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:03:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 03:03:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:49,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:03:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:03:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:50,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:50,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:50,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:50,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:03:50,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:50,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:50,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:50,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:50,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:03:50,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:03:50,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:50,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:03:50,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:03:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:50,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:50,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:50,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:03:50,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 03:03:50,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:50,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:03:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:03:50,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:03:50,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461509439] [2020-10-14 03:03:50,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:50,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:03:50,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501099400] [2020-10-14 03:03:50,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:03:50,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:50,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:03:50,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:03:50,578 INFO L87 Difference]: Start difference. First operand 23976 states and 36356 transitions. Second operand 7 states. [2020-10-14 03:04:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:29,852 INFO L93 Difference]: Finished difference Result 85827 states and 144838 transitions. [2020-10-14 03:04:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:04:29,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-14 03:04:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:30,219 INFO L225 Difference]: With dead ends: 85827 [2020-10-14 03:04:30,219 INFO L226 Difference]: Without dead ends: 61857 [2020-10-14 03:04:30,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:04:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61857 states. [2020-10-14 03:04:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61857 to 61538. [2020-10-14 03:04:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61538 states. [2020-10-14 03:04:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61538 states to 61538 states and 91367 transitions. [2020-10-14 03:04:34,142 INFO L78 Accepts]: Start accepts. Automaton has 61538 states and 91367 transitions. Word has length 251 [2020-10-14 03:04:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:34,143 INFO L479 AbstractCegarLoop]: Abstraction has 61538 states and 91367 transitions. [2020-10-14 03:04:34,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:04:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 61538 states and 91367 transitions. [2020-10-14 03:04:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 03:04:34,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:34,161 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, 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] [2020-10-14 03:04:34,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:04:34,162 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:34,163 INFO L82 PathProgramCache]: Analyzing trace with hash -36477812, now seen corresponding path program 1 times [2020-10-14 03:04:34,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:34,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589981130] [2020-10-14 03:04:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:04:39,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:04:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 03:04:39,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 03:04:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:04:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:04:39,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:04:39,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 03:04:39,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:04:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 03:04:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:04:39,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 03:04:39,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:04:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:04:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:04:40,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589981130] [2020-10-14 03:04:40,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:40,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:04:40,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690906387] [2020-10-14 03:04:40,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:04:40,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:40,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:04:40,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:04:40,047 INFO L87 Difference]: Start difference. First operand 61538 states and 91367 transitions. Second operand 7 states.