/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:34:40,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:34:40,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:34:40,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:34:40,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:34:40,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:34:40,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:34:40,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:34:40,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:34:40,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:34:40,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:34:40,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:34:40,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:34:40,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:34:40,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:34:40,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:34:40,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:34:40,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:34:40,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:34:40,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:34:40,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:34:40,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:34:40,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:34:40,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:34:40,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:34:40,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:34:40,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:34:40,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:34:40,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:34:40,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:34:40,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:34:40,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:34:40,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:34:40,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:34:40,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:34:40,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:34:40,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:34:40,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:34:40,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:34:40,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:34:40,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:34:40,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:34:40,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:34:40,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:34:40,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:34:40,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:34:40,518 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:34:40,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:34:40,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:34:40,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:34:40,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:34:40,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:34:40,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:34:40,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:34:40,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:34:40,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:34:40,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:34:40,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:34:40,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:34:40,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:34:40,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:34:40,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:34:40,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:34:40,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:34:40,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:34:40,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:34:40,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:34:40,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:34:40,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:34:40,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:34:40,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:34:40,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:34:40,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:34:40,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:34:40,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:34:40,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:34:40,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:34:40,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-15 03:34:40,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11f74be09/19b2328ea111407e8f9d7d27fb62083a/FLAGbe89ddddf [2020-10-15 03:34:41,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:34:41,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-15 03:34:41,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11f74be09/19b2328ea111407e8f9d7d27fb62083a/FLAGbe89ddddf [2020-10-15 03:34:42,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11f74be09/19b2328ea111407e8f9d7d27fb62083a [2020-10-15 03:34:42,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:34:42,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:34:42,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:34:42,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:34:42,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:34:42,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:42" (1/1) ... [2020-10-15 03:34:42,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b30b002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:42, skipping insertion in model container [2020-10-15 03:34:42,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:42" (1/1) ... [2020-10-15 03:34:42,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:34:42,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:34:44,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:34:44,979 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:34:46,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:34:46,273 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:34:46,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46 WrapperNode [2020-10-15 03:34:46,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:34:46,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:34:46,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:34:46,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:34:46,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... [2020-10-15 03:34:46,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... [2020-10-15 03:34:46,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... [2020-10-15 03:34:46,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... [2020-10-15 03:34:46,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... [2020-10-15 03:34:46,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... [2020-10-15 03:34:46,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... [2020-10-15 03:34:46,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:34:46,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:34:46,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:34:46,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:34:46,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:34:46,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:34:46,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:34:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:34:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:34:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:34:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:34:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:34:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:34:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:34:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:34:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:34:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:34:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:34:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:34:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:34:46,742 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:34:46,742 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:34:46,742 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:34:46,742 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:34:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:34:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:34:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:34:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:34:46,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:34:53,256 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:34:53,256 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:34:53,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:53 BoogieIcfgContainer [2020-10-15 03:34:53,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:34:53,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:34:53,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:34:53,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:34:53,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:34:42" (1/3) ... [2020-10-15 03:34:53,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b7fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:53, skipping insertion in model container [2020-10-15 03:34:53,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:46" (2/3) ... [2020-10-15 03:34:53,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b7fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:53, skipping insertion in model container [2020-10-15 03:34:53,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:53" (3/3) ... [2020-10-15 03:34:53,283 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-15 03:34:53,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:34:53,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-10-15 03:34:53,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-10-15 03:34:53,360 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:34:53,360 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:34:53,360 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:34:53,360 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:34:53,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:34:53,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:34:53,361 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:34:53,361 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:34:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states. [2020-10-15 03:34:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:34:53,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:53,447 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] [2020-10-15 03:34:53,448 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash -687871141, now seen corresponding path program 1 times [2020-10-15 03:34:53,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:53,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403897228] [2020-10-15 03:34:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:59,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:34:59,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:34:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-15 03:34:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:59,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:34:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:35:02,705 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:35:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:02,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:02,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:02,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:02,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-15 03:35:02,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:02,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:02,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403897228] [2020-10-15 03:35:02,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:02,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:02,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623481182] [2020-10-15 03:35:02,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:02,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:02,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:02,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:02,997 INFO L87 Difference]: Start difference. First operand 2087 states. Second operand 6 states. [2020-10-15 03:35:06,274 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-15 03:35:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:26,466 INFO L93 Difference]: Finished difference Result 3628 states and 6344 transitions. [2020-10-15 03:35:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:26,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-15 03:35:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:26,509 INFO L225 Difference]: With dead ends: 3628 [2020-10-15 03:35:26,510 INFO L226 Difference]: Without dead ends: 2144 [2020-10-15 03:35:26,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:35:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-15 03:35:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2042. [2020-10-15 03:35:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2020-10-15 03:35:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 2714 transitions. [2020-10-15 03:35:26,669 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 2714 transitions. Word has length 105 [2020-10-15 03:35:26,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:26,670 INFO L479 AbstractCegarLoop]: Abstraction has 2042 states and 2714 transitions. [2020-10-15 03:35:26,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 2714 transitions. [2020-10-15 03:35:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 03:35:26,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:26,679 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] [2020-10-15 03:35:26,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:35:26,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:26,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1213547847, now seen corresponding path program 1 times [2020-10-15 03:35:26,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:26,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307111521] [2020-10-15 03:35:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 03:35:31,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:35:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 03:35:31,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:31,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:35:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:35,575 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:35:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:35,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 03:35:35,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:35,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:35,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307111521] [2020-10-15 03:35:35,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:35,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:35,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651325829] [2020-10-15 03:35:35,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:35,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:35,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:35,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:35,779 INFO L87 Difference]: Start difference. First operand 2042 states and 2714 transitions. Second operand 6 states. [2020-10-15 03:35:38,937 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-15 03:35:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:51,456 INFO L93 Difference]: Finished difference Result 4319 states and 5953 transitions. [2020-10-15 03:35:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:51,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-15 03:35:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:51,468 INFO L225 Difference]: With dead ends: 4319 [2020-10-15 03:35:51,469 INFO L226 Difference]: Without dead ends: 2618 [2020-10-15 03:35:51,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:35:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-10-15 03:35:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2540. [2020-10-15 03:35:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2540 states. [2020-10-15 03:35:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3553 transitions. [2020-10-15 03:35:51,592 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3553 transitions. Word has length 106 [2020-10-15 03:35:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:51,595 INFO L479 AbstractCegarLoop]: Abstraction has 2540 states and 3553 transitions. [2020-10-15 03:35:51,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3553 transitions. [2020-10-15 03:35:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:35:51,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:51,604 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] [2020-10-15 03:35:51,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:35:51,605 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:51,605 INFO L82 PathProgramCache]: Analyzing trace with hash -50946715, now seen corresponding path program 1 times [2020-10-15 03:35:51,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:51,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448194510] [2020-10-15 03:35:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:56,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:35:56,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:35:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:35:56,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:56,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:56,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:35:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:00,082 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:36:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:00,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:00,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:00,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 03:36:00,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:00,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:00,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448194510] [2020-10-15 03:36:00,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:00,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:00,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861767696] [2020-10-15 03:36:00,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:00,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:00,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:00,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:00,359 INFO L87 Difference]: Start difference. First operand 2540 states and 3553 transitions. Second operand 6 states. [2020-10-15 03:36:03,447 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-15 03:36:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:14,171 INFO L93 Difference]: Finished difference Result 4739 states and 6734 transitions. [2020-10-15 03:36:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:14,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-15 03:36:14,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:14,185 INFO L225 Difference]: With dead ends: 4739 [2020-10-15 03:36:14,185 INFO L226 Difference]: Without dead ends: 2436 [2020-10-15 03:36:14,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2020-10-15 03:36:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2436. [2020-10-15 03:36:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2436 states. [2020-10-15 03:36:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3429 transitions. [2020-10-15 03:36:14,291 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3429 transitions. Word has length 107 [2020-10-15 03:36:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:14,292 INFO L479 AbstractCegarLoop]: Abstraction has 2436 states and 3429 transitions. [2020-10-15 03:36:14,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3429 transitions. [2020-10-15 03:36:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:36:14,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:14,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:14,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:36:14,299 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash 223649769, now seen corresponding path program 1 times [2020-10-15 03:36:14,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:14,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632716340] [2020-10-15 03:36:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:19,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:19,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:36:19,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:36:19,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:19,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:19,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:36:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:36:22,653 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:36:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:22,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-15 03:36:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:22,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:22,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:22,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632716340] [2020-10-15 03:36:22,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:22,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:22,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348413643] [2020-10-15 03:36:22,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:22,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:22,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:22,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:22,879 INFO L87 Difference]: Start difference. First operand 2436 states and 3429 transitions. Second operand 6 states. [2020-10-15 03:36:26,002 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-15 03:36:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:36,585 INFO L93 Difference]: Finished difference Result 5902 states and 8416 transitions. [2020-10-15 03:36:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:36,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-15 03:36:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:36,601 INFO L225 Difference]: With dead ends: 5902 [2020-10-15 03:36:36,601 INFO L226 Difference]: Without dead ends: 3627 [2020-10-15 03:36:36,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2020-10-15 03:36:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3525. [2020-10-15 03:36:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2020-10-15 03:36:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5068 transitions. [2020-10-15 03:36:36,773 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5068 transitions. Word has length 108 [2020-10-15 03:36:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:36,775 INFO L479 AbstractCegarLoop]: Abstraction has 3525 states and 5068 transitions. [2020-10-15 03:36:36,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5068 transitions. [2020-10-15 03:36:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 03:36:36,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:36,784 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] [2020-10-15 03:36:36,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:36:36,785 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:36,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:36,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1028815079, now seen corresponding path program 1 times [2020-10-15 03:36:36,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:36,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103661692] [2020-10-15 03:36:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:41,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:41,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 03:36:41,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:36:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:36:41,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:41,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:36:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:36:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:36:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:45,560 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:36:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:45,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:45,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 03:36:45,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:45,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:45,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103661692] [2020-10-15 03:36:45,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:45,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:36:45,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649567428] [2020-10-15 03:36:45,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:36:45,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:45,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:36:45,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:36:45,669 INFO L87 Difference]: Start difference. First operand 3525 states and 5068 transitions. Second operand 7 states. [2020-10-15 03:36:48,603 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification that was a NOOP. DAG size: 773 [2020-10-15 03:37:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:08,479 INFO L93 Difference]: Finished difference Result 17599 states and 25505 transitions. [2020-10-15 03:37:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:37:08,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-15 03:37:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:08,531 INFO L225 Difference]: With dead ends: 17599 [2020-10-15 03:37:08,532 INFO L226 Difference]: Without dead ends: 14225 [2020-10-15 03:37:08,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:37:08,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14225 states. [2020-10-15 03:37:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14225 to 8955. [2020-10-15 03:37:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-10-15 03:37:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 13018 transitions. [2020-10-15 03:37:08,982 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 13018 transitions. Word has length 109 [2020-10-15 03:37:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:08,983 INFO L479 AbstractCegarLoop]: Abstraction has 8955 states and 13018 transitions. [2020-10-15 03:37:08,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:37:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 13018 transitions. [2020-10-15 03:37:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:37:09,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:09,005 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] [2020-10-15 03:37:09,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:37:09,006 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1003153765, now seen corresponding path program 1 times [2020-10-15 03:37:09,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:09,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148425132] [2020-10-15 03:37:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:14,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:14,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:14,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:37:14,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:37:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 03:37:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:14,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:37:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:37:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:17,233 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:37:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:17,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:17,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:17,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-15 03:37:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:17,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:37:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:17,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148425132] [2020-10-15 03:37:17,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:17,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:17,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575072922] [2020-10-15 03:37:17,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:17,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:17,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:17,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:17,382 INFO L87 Difference]: Start difference. First operand 8955 states and 13018 transitions. Second operand 6 states. [2020-10-15 03:37:23,543 WARN L193 SmtUtils]: Spent 6.03 s on a formula simplification. DAG size of input: 778 DAG size of output: 777 [2020-10-15 03:37:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:33,963 INFO L93 Difference]: Finished difference Result 10897 states and 15672 transitions. [2020-10-15 03:37:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:33,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-10-15 03:37:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:33,975 INFO L225 Difference]: With dead ends: 10897 [2020-10-15 03:37:33,975 INFO L226 Difference]: Without dead ends: 4661 [2020-10-15 03:37:33,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2020-10-15 03:37:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3505. [2020-10-15 03:37:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3505 states. [2020-10-15 03:37:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5036 transitions. [2020-10-15 03:37:34,168 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5036 transitions. Word has length 110 [2020-10-15 03:37:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:34,169 INFO L479 AbstractCegarLoop]: Abstraction has 3505 states and 5036 transitions. [2020-10-15 03:37:34,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:34,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5036 transitions. [2020-10-15 03:37:34,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:37:34,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:34,174 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] [2020-10-15 03:37:34,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:37:34,175 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:34,176 INFO L82 PathProgramCache]: Analyzing trace with hash 265866059, now seen corresponding path program 1 times [2020-10-15 03:37:34,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:34,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129300599] [2020-10-15 03:37:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:37:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:37:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 03:37:39,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:39,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:37:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:37:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:37:39,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:42,497 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:37:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:42,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:42,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:37:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:42,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:42,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129300599] [2020-10-15 03:37:42,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:42,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:37:42,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930402247] [2020-10-15 03:37:42,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:37:42,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:42,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:37:42,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:37:42,591 INFO L87 Difference]: Start difference. First operand 3505 states and 5036 transitions. Second operand 7 states. [2020-10-15 03:37:45,797 WARN L193 SmtUtils]: Spent 3.08 s on a formula simplification that was a NOOP. DAG size: 779 [2020-10-15 03:37:58,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:58,108 INFO L93 Difference]: Finished difference Result 6836 states and 9672 transitions. [2020-10-15 03:37:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:37:58,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-15 03:37:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:58,119 INFO L225 Difference]: With dead ends: 6836 [2020-10-15 03:37:58,119 INFO L226 Difference]: Without dead ends: 4785 [2020-10-15 03:37:58,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:37:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2020-10-15 03:37:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 3505. [2020-10-15 03:37:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3505 states. [2020-10-15 03:37:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5035 transitions. [2020-10-15 03:37:58,287 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5035 transitions. Word has length 110 [2020-10-15 03:37:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:58,288 INFO L479 AbstractCegarLoop]: Abstraction has 3505 states and 5035 transitions. [2020-10-15 03:37:58,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:37:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5035 transitions. [2020-10-15 03:37:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:37:58,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:58,293 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] [2020-10-15 03:37:58,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:37:58,294 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1007217752, now seen corresponding path program 1 times [2020-10-15 03:37:58,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:58,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22605706] [2020-10-15 03:37:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:01,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:03,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:03,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:38:03,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:38:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:38:03,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:03,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:38:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:38:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 03:38:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:06,540 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-15 03:38:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:06,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:06,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:06,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:38:06,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:06,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:38:06,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22605706] [2020-10-15 03:38:06,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:06,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:38:06,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325758128] [2020-10-15 03:38:06,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:38:06,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:06,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:38:06,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:38:06,617 INFO L87 Difference]: Start difference. First operand 3505 states and 5035 transitions. Second operand 6 states. [2020-10-15 03:38:09,730 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification that was a NOOP. DAG size: 770