/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:49:16,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:49:16,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:49:16,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:49:16,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:49:16,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:49:16,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:49:16,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:49:16,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:49:16,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:49:16,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:49:16,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:49:16,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:49:16,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:49:16,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:49:16,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:49:16,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:49:16,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:49:16,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:49:16,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:49:16,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:49:16,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:49:16,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:49:16,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:49:16,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:49:16,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:49:16,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:49:16,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:49:16,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:49:16,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:49:16,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:49:16,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:49:16,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:49:16,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:49:16,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:49:16,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:49:16,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:49:16,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:49:16,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:49:16,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:49:16,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:49:16,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:49:16,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:49:16,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:49:16,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:49:16,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:49:16,668 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:49:16,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:49:16,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:49:16,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:49:16,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:49:16,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:49:16,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:49:16,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:49:16,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:49:16,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:49:16,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:49:16,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:49:16,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:49:16,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:49:16,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:49:16,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:49:16,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:49:16,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:49:16,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:49:16,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:49:16,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:49:16,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:49:16,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:49:16,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:49:16,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:49:16,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:49:17,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:49:17,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:49:17,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:49:17,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:49:17,202 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:49:17,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-25 14:49:17,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698a70a93/28e85f068543485786fb8e6d87872028/FLAG06bd6710b [2020-09-25 14:49:17,860 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:49:17,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2020-09-25 14:49:17,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698a70a93/28e85f068543485786fb8e6d87872028/FLAG06bd6710b [2020-09-25 14:49:18,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698a70a93/28e85f068543485786fb8e6d87872028 [2020-09-25 14:49:18,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:49:18,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:49:18,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:49:18,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:49:18,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:49:18,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dc5d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18, skipping insertion in model container [2020-09-25 14:49:18,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:49:18,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:49:18,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:49:18,595 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:49:18,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:49:18,663 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:49:18,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18 WrapperNode [2020-09-25 14:49:18,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:49:18,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:49:18,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:49:18,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:49:18,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... [2020-09-25 14:49:18,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:49:18,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:49:18,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:49:18,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:49:18,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:49:18,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:49:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:49:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-25 14:49:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-09-25 14:49:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-09-25 14:49:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-09-25 14:49:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-09-25 14:49:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-09-25 14:49:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-25 14:49:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-25 14:49:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-25 14:49:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-25 14:49:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-25 14:49:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-25 14:49:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:49:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:49:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:49:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-25 14:49:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-09-25 14:49:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-09-25 14:49:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-09-25 14:49:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-09-25 14:49:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-09-25 14:49:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-25 14:49:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-25 14:49:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-25 14:49:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-25 14:49:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-25 14:49:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-25 14:49:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:49:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:49:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:49:19,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:49:19,410 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 14:49:19,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:49:19 BoogieIcfgContainer [2020-09-25 14:49:19,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:49:19,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:49:19,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:49:19,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:49:19,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:49:18" (1/3) ... [2020-09-25 14:49:19,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f738bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:49:19, skipping insertion in model container [2020-09-25 14:49:19,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:18" (2/3) ... [2020-09-25 14:49:19,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f738bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:49:19, skipping insertion in model container [2020-09-25 14:49:19,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:49:19" (3/3) ... [2020-09-25 14:49:19,427 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2020-09-25 14:49:19,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:49:19,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:49:19,472 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:49:19,502 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:49:19,502 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:49:19,502 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:49:19,502 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:49:19,502 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:49:19,503 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:49:19,503 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:49:19,503 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:49:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-09-25 14:49:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 14:49:19,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:19,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:19,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:19,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1485288606, now seen corresponding path program 1 times [2020-09-25 14:49:19,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:19,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233883707] [2020-09-25 14:49:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:24,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:24,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 14:49:24,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:49:24,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:49:24,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:24,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:49:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 14:49:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 14:49:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:49:25,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:25,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:25,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:25,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:49:25,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:25,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:49:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:49:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:25,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:25,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:25,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:49:25,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:25,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:49:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:25,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:25,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:49:25,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:25,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:25,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:25,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:25,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:49:25,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:25,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 14:49:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:25,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:49:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:49:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:25,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:49:25,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:49:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:25,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:25,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:25,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:49:25,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:25,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:49:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:25,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:25,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:25,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:25,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:49:25,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:25,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:49:25,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233883707] [2020-09-25 14:49:25,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:49:25,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:49:25,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991544099] [2020-09-25 14:49:25,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:49:25,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:25,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:49:25,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:49:25,376 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 9 states. [2020-09-25 14:49:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:28,869 INFO L93 Difference]: Finished difference Result 730 states and 960 transitions. [2020-09-25 14:49:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:49:28,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-09-25 14:49:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:28,915 INFO L225 Difference]: With dead ends: 730 [2020-09-25 14:49:28,916 INFO L226 Difference]: Without dead ends: 567 [2020-09-25 14:49:28,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 14:49:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-09-25 14:49:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 203. [2020-09-25 14:49:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-25 14:49:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 232 transitions. [2020-09-25 14:49:29,027 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 232 transitions. Word has length 109 [2020-09-25 14:49:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:29,028 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 232 transitions. [2020-09-25 14:49:29,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:49:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 232 transitions. [2020-09-25 14:49:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 14:49:29,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:29,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:29,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:49:29,034 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1201003636, now seen corresponding path program 1 times [2020-09-25 14:49:29,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:29,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589001747] [2020-09-25 14:49:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 14:49:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:49:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-09-25 14:49:30,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:49:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 14:49:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:49:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:30,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:30,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:49:30,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:30,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:30,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:30,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:49:30,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 14:49:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:30,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:30,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:49:30,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:30,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:30,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:49:30,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:30,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 14:49:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:30,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:49:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:49:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 14:49:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:49:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:30,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:49:30,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:49:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:49:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:30,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:49:30,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589001747] [2020-09-25 14:49:30,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:49:30,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:49:30,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383955398] [2020-09-25 14:49:30,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:49:30,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:30,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:49:30,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:49:30,707 INFO L87 Difference]: Start difference. First operand 203 states and 232 transitions. Second operand 6 states. [2020-09-25 14:49:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:31,920 INFO L93 Difference]: Finished difference Result 535 states and 650 transitions. [2020-09-25 14:49:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:49:31,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-09-25 14:49:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:31,925 INFO L225 Difference]: With dead ends: 535 [2020-09-25 14:49:31,925 INFO L226 Difference]: Without dead ends: 377 [2020-09-25 14:49:31,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:49:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-25 14:49:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 302. [2020-09-25 14:49:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-09-25 14:49:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 360 transitions. [2020-09-25 14:49:31,978 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 360 transitions. Word has length 110 [2020-09-25 14:49:31,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:31,979 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 360 transitions. [2020-09-25 14:49:31,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:49:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 360 transitions. [2020-09-25 14:49:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 14:49:31,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:31,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:31,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:49:31,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:31,983 INFO L82 PathProgramCache]: Analyzing trace with hash 16133185, now seen corresponding path program 1 times [2020-09-25 14:49:31,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:31,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624622410] [2020-09-25 14:49:31,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 14:49:35,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:49:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2998 [2020-09-25 14:49:35,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:35,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-25 14:49:35,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:49:35,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:35,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:35,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:35,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:49:35,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:35,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:35,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:35,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:35,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:35,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:35,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 14:49:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:35,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:49:35,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:49:35,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:49:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:49:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:49:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:35,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:35,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:49:35,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:49:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:35,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:35,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:35,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:49:35,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:35,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:49:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:49:35,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624622410] [2020-09-25 14:49:35,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:49:35,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:49:35,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344264037] [2020-09-25 14:49:35,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:49:35,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:35,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:49:35,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:49:35,259 INFO L87 Difference]: Start difference. First operand 302 states and 360 transitions. Second operand 7 states. [2020-09-25 14:49:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:36,956 INFO L93 Difference]: Finished difference Result 892 states and 1117 transitions. [2020-09-25 14:49:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:49:36,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-09-25 14:49:36,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:36,966 INFO L225 Difference]: With dead ends: 892 [2020-09-25 14:49:36,966 INFO L226 Difference]: Without dead ends: 635 [2020-09-25 14:49:36,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:49:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-09-25 14:49:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 516. [2020-09-25 14:49:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-09-25 14:49:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 614 transitions. [2020-09-25 14:49:37,048 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 614 transitions. Word has length 110 [2020-09-25 14:49:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:37,048 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 614 transitions. [2020-09-25 14:49:37,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:49:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 614 transitions. [2020-09-25 14:49:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:49:37,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:37,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:37,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:49:37,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash 281878890, now seen corresponding path program 1 times [2020-09-25 14:49:37,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:37,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660656181] [2020-09-25 14:49:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:37,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:49:42,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:49:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:49:42,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:49:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 14:49:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 14:49:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:42,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:42,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:42,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:42,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:49:42,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:49:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:42,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:49:42,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:49:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 14:49:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:49:42,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:49:42,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:49:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 14:49:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:42,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:49:42,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:42,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:49:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:49:42,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:49:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 14:49:42,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:49:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:49:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:49:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:42,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:49:42,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:49:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:42,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:42,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:49:42,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:49:42,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:42,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:42,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:49:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 14:49:42,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660656181] [2020-09-25 14:49:42,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:49:42,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:49:42,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760779500] [2020-09-25 14:49:42,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:49:42,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:49:42,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:49:42,608 INFO L87 Difference]: Start difference. First operand 516 states and 614 transitions. Second operand 8 states. [2020-09-25 14:49:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:43,754 INFO L93 Difference]: Finished difference Result 862 states and 1043 transitions. [2020-09-25 14:49:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:49:43,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-09-25 14:49:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:43,761 INFO L225 Difference]: With dead ends: 862 [2020-09-25 14:49:43,761 INFO L226 Difference]: Without dead ends: 612 [2020-09-25 14:49:43,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:49:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-09-25 14:49:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 515. [2020-09-25 14:49:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-09-25 14:49:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 612 transitions. [2020-09-25 14:49:43,829 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 612 transitions. Word has length 140 [2020-09-25 14:49:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:43,830 INFO L479 AbstractCegarLoop]: Abstraction has 515 states and 612 transitions. [2020-09-25 14:49:43,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:49:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 612 transitions. [2020-09-25 14:49:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:49:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:43,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:43,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:49:43,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash -794347379, now seen corresponding path program 1 times [2020-09-25 14:49:43,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:43,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368280178] [2020-09-25 14:49:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:49:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:49:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4620 [2020-09-25 14:49:48,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:49:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 14:49:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:49:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:48,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:48,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:49:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:48,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:48,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:49:48,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:49:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 14:49:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:49:48,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:49:48,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:49:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:49:48,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:49:48,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 14:49:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:48,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:49:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:49:48,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:49:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:49:48,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:49:48,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 14:49:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:49:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:48,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:49:48,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:49:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:48,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:49:48,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:48,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:48,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:48,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:49:48,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368280178] [2020-09-25 14:49:48,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:49:48,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:49:48,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685302812] [2020-09-25 14:49:48,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:49:48,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:49:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:49:48,781 INFO L87 Difference]: Start difference. First operand 515 states and 612 transitions. Second operand 8 states. [2020-09-25 14:49:50,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:50,340 INFO L93 Difference]: Finished difference Result 1598 states and 2054 transitions. [2020-09-25 14:49:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:49:50,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-09-25 14:49:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:50,348 INFO L225 Difference]: With dead ends: 1598 [2020-09-25 14:49:50,348 INFO L226 Difference]: Without dead ends: 1128 [2020-09-25 14:49:50,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:49:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-09-25 14:49:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 875. [2020-09-25 14:49:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-09-25 14:49:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1084 transitions. [2020-09-25 14:49:50,424 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1084 transitions. Word has length 140 [2020-09-25 14:49:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:50,424 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1084 transitions. [2020-09-25 14:49:50,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:49:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1084 transitions. [2020-09-25 14:49:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:49:50,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:50,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:50,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:49:50,429 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:50,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1270050571, now seen corresponding path program 1 times [2020-09-25 14:49:50,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:50,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137072996] [2020-09-25 14:49:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:50,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:49:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:49:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-09-25 14:49:51,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 14:49:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:49:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:51,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:49:51,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:51,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:51,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:49:51,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:49:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:49:51,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:49:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:49:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:49:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:49:51,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 14:49:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 14:49:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:49:51,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:49:51,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:49:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 14:49:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:49:51,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:49:51,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 14:49:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 14:49:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:49:51,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:49:51,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 14:49:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:49:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:51,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:49:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:49:51,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:49:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:51,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:51,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:49:51,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:49:51,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:51,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 14:49:51,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137072996] [2020-09-25 14:49:51,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:49:51,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:49:51,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090199602] [2020-09-25 14:49:51,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:49:51,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:51,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:49:51,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:49:51,438 INFO L87 Difference]: Start difference. First operand 875 states and 1084 transitions. Second operand 8 states. [2020-09-25 14:49:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:52,488 INFO L93 Difference]: Finished difference Result 1761 states and 2180 transitions. [2020-09-25 14:49:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:49:52,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-25 14:49:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:52,495 INFO L225 Difference]: With dead ends: 1761 [2020-09-25 14:49:52,495 INFO L226 Difference]: Without dead ends: 930 [2020-09-25 14:49:52,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:49:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-09-25 14:49:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 819. [2020-09-25 14:49:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-09-25 14:49:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1005 transitions. [2020-09-25 14:49:52,572 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1005 transitions. Word has length 142 [2020-09-25 14:49:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:52,572 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1005 transitions. [2020-09-25 14:49:52,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:49:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1005 transitions. [2020-09-25 14:49:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 14:49:52,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:52,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:52,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:49:52,577 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:52,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1807763757, now seen corresponding path program 1 times [2020-09-25 14:49:52,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:52,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251527228] [2020-09-25 14:49:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 14:49:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 14:49:52,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:52,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:49:52,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:49:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:52,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:52,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:52,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:52,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:52,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:52,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:52,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:49:52,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:52,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:52,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:52,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:52,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:52,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:52,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:52,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:52,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 14:49:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:49:52,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:49:52,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:53,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:49:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:49:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 14:49:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:53,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:53,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:53,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:49:53,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:53,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:53,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-25 14:49:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:53,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:53,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:49:53,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:49:53,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:53,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 14:49:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:53,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:49:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:53,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:53,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:53,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:49:53,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:53,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:53,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:53,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:49:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:53,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:53,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:49:53,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:49:53,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:53,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:53,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 14:49:53,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251527228] [2020-09-25 14:49:53,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:49:53,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:49:53,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48735341] [2020-09-25 14:49:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:49:53,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:53,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:49:53,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:49:53,096 INFO L87 Difference]: Start difference. First operand 819 states and 1005 transitions. Second operand 7 states. [2020-09-25 14:49:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:54,454 INFO L93 Difference]: Finished difference Result 2111 states and 2731 transitions. [2020-09-25 14:49:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:49:54,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 14:49:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:54,466 INFO L225 Difference]: With dead ends: 2111 [2020-09-25 14:49:54,466 INFO L226 Difference]: Without dead ends: 1336 [2020-09-25 14:49:54,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:49:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-09-25 14:49:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1175. [2020-09-25 14:49:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-09-25 14:49:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1473 transitions. [2020-09-25 14:49:54,582 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1473 transitions. Word has length 148 [2020-09-25 14:49:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:54,583 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1473 transitions. [2020-09-25 14:49:54,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:49:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1473 transitions. [2020-09-25 14:49:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 14:49:54,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:54,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:54,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:49:54,589 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:54,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:54,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1383188944, now seen corresponding path program 1 times [2020-09-25 14:49:54,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:54,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653550796] [2020-09-25 14:49:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:54,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 14:49:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 14:49:59,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:49:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:49:59,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:59,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 14:49:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:59,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:49:59,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:49:59,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:59,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:49:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:59,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:59,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:49:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:59,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:59,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:49:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:59,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:49:59,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:49:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:59,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:59,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:49:59,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:49:59,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:59,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:49:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:59,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:49:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:50:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:50:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 14:50:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:00,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:50:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:50:00,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 14:50:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:50:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:00,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:50:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:50:00,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:00,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:50:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:50:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:00,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:50:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:00,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:00,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:50:00,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:50:00,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:00,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:00,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:50:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:00,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:00,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:50:00,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:50:00,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:00,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:00,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 14:50:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:00,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:00,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 14:50:00,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:50:00,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:00,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:50:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:50:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:50:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:50:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:00,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:00,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:50:00,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:50:00,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:00,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 14:50:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:00,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:00,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:50:00,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:50:00,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:00,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:50:00,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653550796] [2020-09-25 14:50:00,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:50:00,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 14:50:00,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864623509] [2020-09-25 14:50:00,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:50:00,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:50:00,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:50:00,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:50:00,256 INFO L87 Difference]: Start difference. First operand 1175 states and 1473 transitions. Second operand 12 states. [2020-09-25 14:50:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:50:04,700 INFO L93 Difference]: Finished difference Result 3426 states and 5081 transitions. [2020-09-25 14:50:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 14:50:04,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2020-09-25 14:50:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:50:04,727 INFO L225 Difference]: With dead ends: 3426 [2020-09-25 14:50:04,727 INFO L226 Difference]: Without dead ends: 3423 [2020-09-25 14:50:04,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 14:50:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2020-09-25 14:50:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 2842. [2020-09-25 14:50:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states.