/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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:42:58,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:42:58,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:42:58,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:42:58,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:42:58,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:42:58,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:42:58,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:42:58,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:42:58,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:42:58,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:42:58,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:42:58,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:42:58,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:42:58,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:42:58,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:42:58,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:42:58,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:42:58,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:42:58,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:42:58,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:42:58,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:42:58,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:42:58,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:42:58,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:42:58,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:42:58,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:42:58,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:42:58,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:42:58,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:42:58,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:42:58,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:42:58,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:42:58,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:42:58,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:42:58,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:42:58,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:42:58,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:42:58,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:42:58,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:42:58,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:42:58,328 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 03:42:58,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:42:58,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:42:58,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:42:58,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:42:58,366 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:42:58,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:42:58,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:42:58,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:42:58,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:42:58,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:42:58,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:42:58,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:42:58,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:42:58,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:42:58,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:42:58,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:42:58,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:42:58,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:42:58,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:42:58,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:42:58,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:42:58,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:42:58,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:42:58,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:42:58,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:42:58,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:42:58,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:42:58,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:42:58,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:42:58,371 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 03:42:58,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:42:58,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:42:58,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:42:58,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:42:58,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:42:58,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:42:58,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7f2b411a/4ba261725a5b4aaea2a98955a65bde48/FLAG99859b207 [2020-10-15 03:42:59,342 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:42:59,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:42:59,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7f2b411a/4ba261725a5b4aaea2a98955a65bde48/FLAG99859b207 [2020-10-15 03:42:59,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7f2b411a/4ba261725a5b4aaea2a98955a65bde48 [2020-10-15 03:42:59,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:42:59,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:42:59,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:42:59,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:42:59,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:42:59,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:59" (1/1) ... [2020-10-15 03:42:59,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90d95a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:42:59, skipping insertion in model container [2020-10-15 03:42:59,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:42:59" (1/1) ... [2020-10-15 03:42:59,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:42:59,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:43:00,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:43:00,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:43:00,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:43:00,269 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:43:00,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00 WrapperNode [2020-10-15 03:43:00,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:43:00,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:43:00,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:43:00,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:43:00,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (1/1) ... [2020-10-15 03:43:00,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:43:00,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:43:00,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:43:00,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:43:00,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (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 03:43:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:43:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:43:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:43:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:43:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:43:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:43:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:43:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:43:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:43:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:43:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:43:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:43:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:43:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:43:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:43:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:43:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:43:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:43:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:43:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:43:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:43:01,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:43:01,228 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:43:01,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:43:01 BoogieIcfgContainer [2020-10-15 03:43:01,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:43:01,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:43:01,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:43:01,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:43:01,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:42:59" (1/3) ... [2020-10-15 03:43:01,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb3a605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:43:01, skipping insertion in model container [2020-10-15 03:43:01,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:43:00" (2/3) ... [2020-10-15 03:43:01,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb3a605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:43:01, skipping insertion in model container [2020-10-15 03:43:01,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:43:01" (3/3) ... [2020-10-15 03:43:01,243 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:43:01,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:43:01,262 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:43:01,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:43:01,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:43:01,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:43:01,311 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:43:01,311 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:43:01,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:43:01,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:43:01,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:43:01,312 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:43:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-15 03:43:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:43:01,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:01,355 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] [2020-10-15 03:43:01,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:01,362 INFO L82 PathProgramCache]: Analyzing trace with hash 271329335, now seen corresponding path program 1 times [2020-10-15 03:43:01,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:01,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732169467] [2020-10-15 03:43:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:03,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:43:03,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:43:03,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-15 03:43:03,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:03,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:43:03,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:43:03,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:43:03,530 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:43:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:03,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:43:03,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:03,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:03,605 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 03:43:03,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732169467] [2020-10-15 03:43:03,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:03,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:43:03,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630891693] [2020-10-15 03:43:03,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:03,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:03,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:03,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:03,633 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 6 states. [2020-10-15 03:43:03,816 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-15 03:43:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:04,790 INFO L93 Difference]: Finished difference Result 525 states and 843 transitions. [2020-10-15 03:43:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:43:04,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-15 03:43:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:04,829 INFO L225 Difference]: With dead ends: 525 [2020-10-15 03:43:04,830 INFO L226 Difference]: Without dead ends: 441 [2020-10-15 03:43:04,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-15 03:43:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 259. [2020-10-15 03:43:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 03:43:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 389 transitions. [2020-10-15 03:43:04,953 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 389 transitions. Word has length 53 [2020-10-15 03:43:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:04,954 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 389 transitions. [2020-10-15 03:43:04,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 389 transitions. [2020-10-15 03:43:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:43:04,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:04,957 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] [2020-10-15 03:43:04,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:43:04,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:04,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:04,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2067393698, now seen corresponding path program 1 times [2020-10-15 03:43:04,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:04,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985917605] [2020-10-15 03:43:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:08,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:08,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:43:08,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:43:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3226 [2020-10-15 03:43:08,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:08,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:43:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:43:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:08,397 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:43:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:08,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:08,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:08,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:08,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:43:08,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:08,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:08,428 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 03:43:08,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985917605] [2020-10-15 03:43:08,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:08,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:43:08,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729630490] [2020-10-15 03:43:08,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:08,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:08,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:08,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:08,433 INFO L87 Difference]: Start difference. First operand 259 states and 389 transitions. Second operand 6 states. [2020-10-15 03:43:08,585 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-15 03:43:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:09,218 INFO L93 Difference]: Finished difference Result 628 states and 969 transitions. [2020-10-15 03:43:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:43:09,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-15 03:43:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:09,223 INFO L225 Difference]: With dead ends: 628 [2020-10-15 03:43:09,223 INFO L226 Difference]: Without dead ends: 564 [2020-10-15 03:43:09,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:43:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-15 03:43:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 411. [2020-10-15 03:43:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-10-15 03:43:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 629 transitions. [2020-10-15 03:43:09,250 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 629 transitions. Word has length 56 [2020-10-15 03:43:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:09,251 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 629 transitions. [2020-10-15 03:43:09,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 629 transitions. [2020-10-15 03:43:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:43:09,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:09,253 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] [2020-10-15 03:43:09,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:43:09,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:09,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1228806752, now seen corresponding path program 1 times [2020-10-15 03:43:09,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:09,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537819570] [2020-10-15 03:43:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:09,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:11,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:11,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:43:11,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:43:11,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2619 [2020-10-15 03:43:11,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:11,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:43:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:43:11,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:12,112 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:43:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:12,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:12,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:12,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:43:12,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:12,153 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 03:43:12,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537819570] [2020-10-15 03:43:12,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:12,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:43:12,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291871905] [2020-10-15 03:43:12,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:12,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:12,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:12,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:12,160 INFO L87 Difference]: Start difference. First operand 411 states and 629 transitions. Second operand 6 states. [2020-10-15 03:43:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:13,110 INFO L93 Difference]: Finished difference Result 797 states and 1231 transitions. [2020-10-15 03:43:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:43:13,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-15 03:43:13,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:13,115 INFO L225 Difference]: With dead ends: 797 [2020-10-15 03:43:13,115 INFO L226 Difference]: Without dead ends: 673 [2020-10-15 03:43:13,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:43:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-10-15 03:43:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 496. [2020-10-15 03:43:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-10-15 03:43:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 763 transitions. [2020-10-15 03:43:13,147 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 763 transitions. Word has length 56 [2020-10-15 03:43:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:13,147 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 763 transitions. [2020-10-15 03:43:13,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 763 transitions. [2020-10-15 03:43:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:43:13,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:13,150 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] [2020-10-15 03:43:13,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:43:13,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash -290958880, now seen corresponding path program 1 times [2020-10-15 03:43:13,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:13,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845330075] [2020-10-15 03:43:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:16,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:43:16,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:43:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2916 [2020-10-15 03:43:16,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:16,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:43:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:43:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-15 03:43:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:16,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:16,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:16,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:43:16,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:16,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:16,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:16,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:16,258 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 03:43:16,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845330075] [2020-10-15 03:43:16,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:16,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:43:16,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496473792] [2020-10-15 03:43:16,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:16,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:16,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:16,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:16,261 INFO L87 Difference]: Start difference. First operand 496 states and 763 transitions. Second operand 6 states. [2020-10-15 03:43:16,401 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-15 03:43:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:17,089 INFO L93 Difference]: Finished difference Result 929 states and 1438 transitions. [2020-10-15 03:43:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:43:17,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-15 03:43:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:17,097 INFO L225 Difference]: With dead ends: 929 [2020-10-15 03:43:17,097 INFO L226 Difference]: Without dead ends: 805 [2020-10-15 03:43:17,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:43:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-15 03:43:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 587. [2020-10-15 03:43:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-15 03:43:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 907 transitions. [2020-10-15 03:43:17,147 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 907 transitions. Word has length 56 [2020-10-15 03:43:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:17,150 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 907 transitions. [2020-10-15 03:43:17,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 907 transitions. [2020-10-15 03:43:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:43:17,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:17,160 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] [2020-10-15 03:43:17,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:43:17,161 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1167207143, now seen corresponding path program 1 times [2020-10-15 03:43:17,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:17,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270306151] [2020-10-15 03:43:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:22,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:22,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:43:22,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:43:22,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:22,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:43:22,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:22,403 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:43:22,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:22,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:22,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:43:22,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:22,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:43:22,483 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 03:43:22,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270306151] [2020-10-15 03:43:22,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:22,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:22,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611539087] [2020-10-15 03:43:22,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:22,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:22,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:22,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:22,490 INFO L87 Difference]: Start difference. First operand 587 states and 907 transitions. Second operand 8 states. [2020-10-15 03:43:22,652 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-15 03:43:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:23,837 INFO L93 Difference]: Finished difference Result 3163 states and 4945 transitions. [2020-10-15 03:43:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:43:23,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-15 03:43:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:23,853 INFO L225 Difference]: With dead ends: 3163 [2020-10-15 03:43:23,853 INFO L226 Difference]: Without dead ends: 2645 [2020-10-15 03:43:23,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:43:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2020-10-15 03:43:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 623. [2020-10-15 03:43:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-10-15 03:43:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 933 transitions. [2020-10-15 03:43:23,922 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 933 transitions. Word has length 59 [2020-10-15 03:43:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:23,924 INFO L479 AbstractCegarLoop]: Abstraction has 623 states and 933 transitions. [2020-10-15 03:43:23,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 933 transitions. [2020-10-15 03:43:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:43:23,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:23,926 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] [2020-10-15 03:43:23,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:43:23,926 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:23,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:23,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1984565417, now seen corresponding path program 1 times [2020-10-15 03:43:23,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:23,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569474577] [2020-10-15 03:43:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:27,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:27,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:43:27,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:43:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3958 [2020-10-15 03:43:27,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:27,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:43:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:28,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:28,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:28,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:43:28,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:28,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:28,182 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 03:43:28,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569474577] [2020-10-15 03:43:28,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:28,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:28,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079776041] [2020-10-15 03:43:28,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:28,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:28,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:28,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:28,185 INFO L87 Difference]: Start difference. First operand 623 states and 933 transitions. Second operand 8 states. [2020-10-15 03:43:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:29,316 INFO L93 Difference]: Finished difference Result 2507 states and 3811 transitions. [2020-10-15 03:43:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:43:29,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-15 03:43:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:29,328 INFO L225 Difference]: With dead ends: 2507 [2020-10-15 03:43:29,328 INFO L226 Difference]: Without dead ends: 2274 [2020-10-15 03:43:29,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:43:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-10-15 03:43:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 705. [2020-10-15 03:43:29,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-10-15 03:43:29,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1051 transitions. [2020-10-15 03:43:29,406 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1051 transitions. Word has length 59 [2020-10-15 03:43:29,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:29,407 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 1051 transitions. [2020-10-15 03:43:29,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:29,407 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1051 transitions. [2020-10-15 03:43:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 03:43:29,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:29,408 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] [2020-10-15 03:43:29,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:43:29,409 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:29,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:29,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1837685290, now seen corresponding path program 1 times [2020-10-15 03:43:29,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:29,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306099457] [2020-10-15 03:43:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:30,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:34,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:34,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 03:43:34,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:43:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:43:34,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:34,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:43:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:43:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:34,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:34,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:34,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:34,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:43:34,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:34,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:34,681 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 03:43:34,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306099457] [2020-10-15 03:43:34,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:34,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:34,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103948090] [2020-10-15 03:43:34,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:34,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:34,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:34,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:34,683 INFO L87 Difference]: Start difference. First operand 705 states and 1051 transitions. Second operand 8 states. [2020-10-15 03:43:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:35,970 INFO L93 Difference]: Finished difference Result 2557 states and 3857 transitions. [2020-10-15 03:43:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:43:35,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-15 03:43:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:35,984 INFO L225 Difference]: With dead ends: 2557 [2020-10-15 03:43:35,984 INFO L226 Difference]: Without dead ends: 1973 [2020-10-15 03:43:35,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:43:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2020-10-15 03:43:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 733. [2020-10-15 03:43:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-15 03:43:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1067 transitions. [2020-10-15 03:43:36,109 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1067 transitions. Word has length 60 [2020-10-15 03:43:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:36,109 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 1067 transitions. [2020-10-15 03:43:36,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1067 transitions. [2020-10-15 03:43:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 03:43:36,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:36,112 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] [2020-10-15 03:43:36,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:43:36,113 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:36,113 INFO L82 PathProgramCache]: Analyzing trace with hash 2080472531, now seen corresponding path program 1 times [2020-10-15 03:43:36,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:36,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188922985] [2020-10-15 03:43:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:41,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:41,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 03:43:41,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 03:43:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:43:41,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:41,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:43:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:41,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:41,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:41,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:41,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:41,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:43:41,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:41,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:41,516 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 03:43:41,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188922985] [2020-10-15 03:43:41,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:41,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:43:41,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855076518] [2020-10-15 03:43:41,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:43:41,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:41,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:43:41,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:41,518 INFO L87 Difference]: Start difference. First operand 733 states and 1067 transitions. Second operand 8 states. [2020-10-15 03:43:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:43,616 INFO L93 Difference]: Finished difference Result 4653 states and 6958 transitions. [2020-10-15 03:43:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:43:43,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-15 03:43:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:43,638 INFO L225 Difference]: With dead ends: 4653 [2020-10-15 03:43:43,638 INFO L226 Difference]: Without dead ends: 4105 [2020-10-15 03:43:43,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:43:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2020-10-15 03:43:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 734. [2020-10-15 03:43:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-15 03:43:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1068 transitions. [2020-10-15 03:43:43,799 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1068 transitions. Word has length 61 [2020-10-15 03:43:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:43,799 INFO L479 AbstractCegarLoop]: Abstraction has 734 states and 1068 transitions. [2020-10-15 03:43:43,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:43:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1068 transitions. [2020-10-15 03:43:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 03:43:43,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:43,801 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] [2020-10-15 03:43:43,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:43:43,801 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash 49156006, now seen corresponding path program 1 times [2020-10-15 03:43:43,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:43,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885909645] [2020-10-15 03:43:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:43,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:43,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:44,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:45,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:48,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 03:43:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:43:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:43:48,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:43:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:43:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:49,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:49,034 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 03:43:49,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885909645] [2020-10-15 03:43:49,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:49,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:49,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133849828] [2020-10-15 03:43:49,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:49,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:49,037 INFO L87 Difference]: Start difference. First operand 734 states and 1068 transitions. Second operand 9 states. [2020-10-15 03:43:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:50,997 INFO L93 Difference]: Finished difference Result 3906 states and 5763 transitions. [2020-10-15 03:43:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:43:50,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-15 03:43:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:51,013 INFO L225 Difference]: With dead ends: 3906 [2020-10-15 03:43:51,014 INFO L226 Difference]: Without dead ends: 3394 [2020-10-15 03:43:51,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:43:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2020-10-15 03:43:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 724. [2020-10-15 03:43:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-15 03:43:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1034 transitions. [2020-10-15 03:43:51,142 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1034 transitions. Word has length 61 [2020-10-15 03:43:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:51,142 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 1034 transitions. [2020-10-15 03:43:51,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:43:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1034 transitions. [2020-10-15 03:43:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 03:43:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:51,143 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] [2020-10-15 03:43:51,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:43:51,144 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:51,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:51,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1368952769, now seen corresponding path program 1 times [2020-10-15 03:43:51,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:51,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168436759] [2020-10-15 03:43:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:52,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:56,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 03:43:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:43:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:43:56,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:56,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:43:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:56,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:56,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:56,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:56,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:43:56,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:56,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:56,402 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 03:43:56,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168436759] [2020-10-15 03:43:56,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:56,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:43:56,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227688023] [2020-10-15 03:43:56,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:56,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:56,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:56,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:56,404 INFO L87 Difference]: Start difference. First operand 724 states and 1034 transitions. Second operand 9 states. [2020-10-15 03:43:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:58,235 INFO L93 Difference]: Finished difference Result 3430 states and 4979 transitions. [2020-10-15 03:43:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:43:58,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-15 03:43:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:58,249 INFO L225 Difference]: With dead ends: 3430 [2020-10-15 03:43:58,249 INFO L226 Difference]: Without dead ends: 2858 [2020-10-15 03:43:58,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:43:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2020-10-15 03:43:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 728. [2020-10-15 03:43:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-15 03:43:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1038 transitions. [2020-10-15 03:43:58,380 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1038 transitions. Word has length 62 [2020-10-15 03:43:58,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:58,380 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 1038 transitions. [2020-10-15 03:43:58,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:43:58,380 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1038 transitions. [2020-10-15 03:43:58,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 03:43:58,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:58,382 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] [2020-10-15 03:43:58,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:43:58,382 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:58,383 INFO L82 PathProgramCache]: Analyzing trace with hash 440731199, now seen corresponding path program 1 times [2020-10-15 03:43:58,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:58,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766267677] [2020-10-15 03:43:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2961 [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:44:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:01,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:01,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:01,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:44:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:01,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:44:01,658 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 03:44:01,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766267677] [2020-10-15 03:44:01,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:01,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:44:01,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484036615] [2020-10-15 03:44:01,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:44:01,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:44:01,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:44:01,661 INFO L87 Difference]: Start difference. First operand 728 states and 1038 transitions. Second operand 10 states. [2020-10-15 03:44:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:03,650 INFO L93 Difference]: Finished difference Result 3260 states and 4814 transitions. [2020-10-15 03:44:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:44:03,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-15 03:44:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:03,663 INFO L225 Difference]: With dead ends: 3260 [2020-10-15 03:44:03,663 INFO L226 Difference]: Without dead ends: 2648 [2020-10-15 03:44:03,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:44:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2020-10-15 03:44:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 1052. [2020-10-15 03:44:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-10-15 03:44:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1516 transitions. [2020-10-15 03:44:03,855 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1516 transitions. Word has length 63 [2020-10-15 03:44:03,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:03,855 INFO L479 AbstractCegarLoop]: Abstraction has 1052 states and 1516 transitions. [2020-10-15 03:44:03,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:44:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1516 transitions. [2020-10-15 03:44:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 03:44:03,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:03,857 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] [2020-10-15 03:44:03,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:44:03,857 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 582877918, now seen corresponding path program 1 times [2020-10-15 03:44:03,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:03,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187454114] [2020-10-15 03:44:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:03,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:08,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:08,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:44:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:09,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:09,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:44:09,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:09,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:09,085 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 03:44:09,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187454114] [2020-10-15 03:44:09,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:09,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:44:09,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535897467] [2020-10-15 03:44:09,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:44:09,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:44:09,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:09,088 INFO L87 Difference]: Start difference. First operand 1052 states and 1516 transitions. Second operand 9 states. [2020-10-15 03:44:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:11,541 INFO L93 Difference]: Finished difference Result 6672 states and 9691 transitions. [2020-10-15 03:44:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:44:11,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-15 03:44:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:11,568 INFO L225 Difference]: With dead ends: 6672 [2020-10-15 03:44:11,568 INFO L226 Difference]: Without dead ends: 5806 [2020-10-15 03:44:11,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:44:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2020-10-15 03:44:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 1054. [2020-10-15 03:44:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2020-10-15 03:44:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1518 transitions. [2020-10-15 03:44:11,825 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1518 transitions. Word has length 63 [2020-10-15 03:44:11,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:11,825 INFO L479 AbstractCegarLoop]: Abstraction has 1054 states and 1518 transitions. [2020-10-15 03:44:11,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:44:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1518 transitions. [2020-10-15 03:44:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 03:44:11,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:11,827 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] [2020-10-15 03:44:11,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:44:11,827 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash 57479651, now seen corresponding path program 1 times [2020-10-15 03:44:11,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:11,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733216008] [2020-10-15 03:44:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:12,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:12,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:13,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:13,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 03:44:13,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-15 03:44:13,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:13,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:44:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:44:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:13,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:13,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:13,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:13,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:44:13,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:13,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:13,721 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 03:44:13,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733216008] [2020-10-15 03:44:13,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:13,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:44:13,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548456957] [2020-10-15 03:44:13,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:44:13,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:44:13,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:44:13,723 INFO L87 Difference]: Start difference. First operand 1054 states and 1518 transitions. Second operand 10 states. [2020-10-15 03:44:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:15,685 INFO L93 Difference]: Finished difference Result 4191 states and 6181 transitions. [2020-10-15 03:44:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:44:15,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-15 03:44:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:15,692 INFO L225 Difference]: With dead ends: 4191 [2020-10-15 03:44:15,693 INFO L226 Difference]: Without dead ends: 3187 [2020-10-15 03:44:15,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:44:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2020-10-15 03:44:16,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 1725. [2020-10-15 03:44:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-10-15 03:44:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2517 transitions. [2020-10-15 03:44:16,027 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2517 transitions. Word has length 63 [2020-10-15 03:44:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:16,028 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2517 transitions. [2020-10-15 03:44:16,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:44:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2517 transitions. [2020-10-15 03:44:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:44:16,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:16,030 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] [2020-10-15 03:44:16,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:44:16,031 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:16,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1929941273, now seen corresponding path program 1 times [2020-10-15 03:44:16,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:16,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132439750] [2020-10-15 03:44:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:16,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:16,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:17,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:44:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:44:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:17,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:17,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:17,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:17,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:44:17,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:17,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:17,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:17,262 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 03:44:17,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132439750] [2020-10-15 03:44:17,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:17,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:44:17,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659670651] [2020-10-15 03:44:17,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:17,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:17,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:17,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:17,264 INFO L87 Difference]: Start difference. First operand 1725 states and 2517 transitions. Second operand 6 states. [2020-10-15 03:44:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:18,625 INFO L93 Difference]: Finished difference Result 4900 states and 7195 transitions. [2020-10-15 03:44:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:44:18,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:44:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:18,633 INFO L225 Difference]: With dead ends: 4900 [2020-10-15 03:44:18,633 INFO L226 Difference]: Without dead ends: 3325 [2020-10-15 03:44:18,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2020-10-15 03:44:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3321. [2020-10-15 03:44:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3321 states. [2020-10-15 03:44:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4790 transitions. [2020-10-15 03:44:19,289 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4790 transitions. Word has length 71 [2020-10-15 03:44:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:19,289 INFO L479 AbstractCegarLoop]: Abstraction has 3321 states and 4790 transitions. [2020-10-15 03:44:19,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4790 transitions. [2020-10-15 03:44:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:44:19,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:19,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:19,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:44:19,294 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:19,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1973013496, now seen corresponding path program 1 times [2020-10-15 03:44:19,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:19,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398875579] [2020-10-15 03:44:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:44:19,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:44:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-15 03:44:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:19,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:44:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:20,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:20,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:44:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:20,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:20,157 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 03:44:20,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398875579] [2020-10-15 03:44:20,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:20,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:20,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716163179] [2020-10-15 03:44:20,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:20,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:20,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:20,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:20,159 INFO L87 Difference]: Start difference. First operand 3321 states and 4790 transitions. Second operand 6 states. [2020-10-15 03:44:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:21,596 INFO L93 Difference]: Finished difference Result 7038 states and 10273 transitions. [2020-10-15 03:44:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:21,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:44:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:21,608 INFO L225 Difference]: With dead ends: 7038 [2020-10-15 03:44:21,608 INFO L226 Difference]: Without dead ends: 4430 [2020-10-15 03:44:21,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-10-15 03:44:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4428. [2020-10-15 03:44:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4428 states. [2020-10-15 03:44:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 6405 transitions. [2020-10-15 03:44:22,516 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 6405 transitions. Word has length 72 [2020-10-15 03:44:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:22,516 INFO L479 AbstractCegarLoop]: Abstraction has 4428 states and 6405 transitions. [2020-10-15 03:44:22,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 6405 transitions. [2020-10-15 03:44:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:44:22,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:22,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:22,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:44:22,522 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1121751608, now seen corresponding path program 1 times [2020-10-15 03:44:22,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:22,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267735369] [2020-10-15 03:44:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:23,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:44:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-15 03:44:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:23,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:44:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:44:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:24,020 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:44:24,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:24,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:24,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:24,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:44:24,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:24,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:24,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:24,046 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 03:44:24,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267735369] [2020-10-15 03:44:24,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:24,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:44:24,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888495313] [2020-10-15 03:44:24,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:24,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:24,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:24,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:24,048 INFO L87 Difference]: Start difference. First operand 4428 states and 6405 transitions. Second operand 6 states. [2020-10-15 03:44:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:26,072 INFO L93 Difference]: Finished difference Result 7715 states and 11165 transitions. [2020-10-15 03:44:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:44:26,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:44:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:26,092 INFO L225 Difference]: With dead ends: 7715 [2020-10-15 03:44:26,092 INFO L226 Difference]: Without dead ends: 5681 [2020-10-15 03:44:26,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2020-10-15 03:44:27,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 4509. [2020-10-15 03:44:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4509 states. [2020-10-15 03:44:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6415 transitions. [2020-10-15 03:44:27,069 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6415 transitions. Word has length 72 [2020-10-15 03:44:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:27,075 INFO L479 AbstractCegarLoop]: Abstraction has 4509 states and 6415 transitions. [2020-10-15 03:44:27,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6415 transitions. [2020-10-15 03:44:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:44:27,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:27,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:27,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:44:27,081 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:27,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2119306281, now seen corresponding path program 1 times [2020-10-15 03:44:27,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:27,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816721549] [2020-10-15 03:44:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:27,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:44:27,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:44:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-15 03:44:27,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:27,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:44:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:27,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:27,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:27,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:27,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:44:27,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:27,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:27,903 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 03:44:27,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816721549] [2020-10-15 03:44:27,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:27,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:27,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947065866] [2020-10-15 03:44:27,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:27,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:27,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:27,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:27,908 INFO L87 Difference]: Start difference. First operand 4509 states and 6415 transitions. Second operand 6 states. [2020-10-15 03:44:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:29,842 INFO L93 Difference]: Finished difference Result 10089 states and 14568 transitions. [2020-10-15 03:44:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:29,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:44:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:29,853 INFO L225 Difference]: With dead ends: 10089 [2020-10-15 03:44:29,854 INFO L226 Difference]: Without dead ends: 6173 [2020-10-15 03:44:29,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6173 states. [2020-10-15 03:44:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6173 to 6171. [2020-10-15 03:44:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6171 states. [2020-10-15 03:44:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 8832 transitions. [2020-10-15 03:44:31,169 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 8832 transitions. Word has length 72 [2020-10-15 03:44:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:31,169 INFO L479 AbstractCegarLoop]: Abstraction has 6171 states and 8832 transitions. [2020-10-15 03:44:31,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 8832 transitions. [2020-10-15 03:44:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:44:31,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:31,175 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] [2020-10-15 03:44:31,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:44:31,176 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:31,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1505856279, now seen corresponding path program 1 times [2020-10-15 03:44:31,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:31,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998741568] [2020-10-15 03:44:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:32,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:32,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:44:32,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:32,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-15 03:44:32,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:32,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:44:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:44:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:44:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:32,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:32,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:32,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:32,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:32,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:44:32,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:32,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:44:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:32,729 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 03:44:32,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998741568] [2020-10-15 03:44:32,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:32,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:44:32,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737854358] [2020-10-15 03:44:32,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:44:32,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:32,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:44:32,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:44:32,732 INFO L87 Difference]: Start difference. First operand 6171 states and 8832 transitions. Second operand 6 states. [2020-10-15 03:44:35,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:35,553 INFO L93 Difference]: Finished difference Result 16981 states and 24525 transitions. [2020-10-15 03:44:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:44:35,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:44:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:35,567 INFO L225 Difference]: With dead ends: 16981 [2020-10-15 03:44:35,567 INFO L226 Difference]: Without dead ends: 11033 [2020-10-15 03:44:35,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11033 states. [2020-10-15 03:44:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11033 to 11031. [2020-10-15 03:44:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11031 states. [2020-10-15 03:44:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11031 states to 11031 states and 15818 transitions. [2020-10-15 03:44:37,747 INFO L78 Accepts]: Start accepts. Automaton has 11031 states and 15818 transitions. Word has length 73 [2020-10-15 03:44:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:37,747 INFO L479 AbstractCegarLoop]: Abstraction has 11031 states and 15818 transitions. [2020-10-15 03:44:37,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:44:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 11031 states and 15818 transitions. [2020-10-15 03:44:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:44:37,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:37,758 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] [2020-10-15 03:44:37,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:44:37,759 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:37,759 INFO L82 PathProgramCache]: Analyzing trace with hash -950105298, now seen corresponding path program 1 times [2020-10-15 03:44:37,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:37,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457968193] [2020-10-15 03:44:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:40,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:40,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:44:40,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2337 [2020-10-15 03:44:40,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:40,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:44:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:44:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:40,260 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:44:40,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:40,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:40,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:40,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:44:40,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:40,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:40,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:40,407 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 03:44:40,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457968193] [2020-10-15 03:44:40,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:40,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:44:40,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966354615] [2020-10-15 03:44:40,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:44:40,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:40,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:44:40,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:40,410 INFO L87 Difference]: Start difference. First operand 11031 states and 15818 transitions. Second operand 9 states. [2020-10-15 03:44:40,559 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:44:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:47,440 INFO L93 Difference]: Finished difference Result 28617 states and 41006 transitions. [2020-10-15 03:44:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:44:47,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-15 03:44:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:47,467 INFO L225 Difference]: With dead ends: 28617 [2020-10-15 03:44:47,467 INFO L226 Difference]: Without dead ends: 25345 [2020-10-15 03:44:47,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:44:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25345 states. [2020-10-15 03:44:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25345 to 10996. [2020-10-15 03:44:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10996 states. [2020-10-15 03:44:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10996 states to 10996 states and 15767 transitions. [2020-10-15 03:44:49,792 INFO L78 Accepts]: Start accepts. Automaton has 10996 states and 15767 transitions. Word has length 73 [2020-10-15 03:44:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:49,792 INFO L479 AbstractCegarLoop]: Abstraction has 10996 states and 15767 transitions. [2020-10-15 03:44:49,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:44:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10996 states and 15767 transitions. [2020-10-15 03:44:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:44:49,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:49,798 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] [2020-10-15 03:44:49,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:44:49,799 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash -858624306, now seen corresponding path program 1 times [2020-10-15 03:44:49,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:49,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931306953] [2020-10-15 03:44:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:49,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:52,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:52,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:44:52,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:44:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2490 [2020-10-15 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:44:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:52,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:52,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:52,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:44:52,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:52,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:52,592 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 03:44:52,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931306953] [2020-10-15 03:44:52,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:52,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:44:52,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684700283] [2020-10-15 03:44:52,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:44:52,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:44:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:44:52,593 INFO L87 Difference]: Start difference. First operand 10996 states and 15767 transitions. Second operand 9 states. [2020-10-15 03:44:52,741 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:44:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:58,501 INFO L93 Difference]: Finished difference Result 27869 states and 40046 transitions. [2020-10-15 03:44:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:44:58,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-15 03:44:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:58,524 INFO L225 Difference]: With dead ends: 27869 [2020-10-15 03:44:58,524 INFO L226 Difference]: Without dead ends: 17862 [2020-10-15 03:44:58,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:44:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17862 states. [2020-10-15 03:45:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17862 to 10945. [2020-10-15 03:45:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10945 states. [2020-10-15 03:45:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10945 states to 10945 states and 15685 transitions. [2020-10-15 03:45:01,104 INFO L78 Accepts]: Start accepts. Automaton has 10945 states and 15685 transitions. Word has length 73 [2020-10-15 03:45:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:01,104 INFO L479 AbstractCegarLoop]: Abstraction has 10945 states and 15685 transitions. [2020-10-15 03:45:01,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:45:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 10945 states and 15685 transitions. [2020-10-15 03:45:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:45:01,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:01,110 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] [2020-10-15 03:45:01,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:45:01,110 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:01,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:01,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1743570045, now seen corresponding path program 1 times [2020-10-15 03:45:01,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:01,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411453262] [2020-10-15 03:45:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:01,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:06,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:06,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:45:06,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:45:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4884 [2020-10-15 03:45:06,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:06,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:45:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:45:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:06,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:06,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:06,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:06,278 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 03:45:06,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411453262] [2020-10-15 03:45:06,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:06,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:45:06,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860675661] [2020-10-15 03:45:06,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:45:06,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:06,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:45:06,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:45:06,280 INFO L87 Difference]: Start difference. First operand 10945 states and 15685 transitions. Second operand 9 states. [2020-10-15 03:45:06,461 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 03:45:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:17,971 INFO L93 Difference]: Finished difference Result 44960 states and 64663 transitions. [2020-10-15 03:45:17,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:45:17,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-15 03:45:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:18,017 INFO L225 Difference]: With dead ends: 44960 [2020-10-15 03:45:18,017 INFO L226 Difference]: Without dead ends: 41462 [2020-10-15 03:45:18,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:45:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41462 states. [2020-10-15 03:45:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41462 to 10782. [2020-10-15 03:45:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10782 states. [2020-10-15 03:45:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 15451 transitions. [2020-10-15 03:45:20,715 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 15451 transitions. Word has length 74 [2020-10-15 03:45:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:20,715 INFO L479 AbstractCegarLoop]: Abstraction has 10782 states and 15451 transitions. [2020-10-15 03:45:20,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:45:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 15451 transitions. [2020-10-15 03:45:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:45:20,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:20,719 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] [2020-10-15 03:45:20,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:45:20,720 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:20,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1580664647, now seen corresponding path program 1 times [2020-10-15 03:45:20,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:20,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160771879] [2020-10-15 03:45:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:20,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:21,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:22,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:45:22,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:45:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-10-15 03:45:22,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:22,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 03:45:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:45:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:45:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:22,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:22,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:22,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:22,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:45:22,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:22,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:22,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:22,576 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 03:45:22,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160771879] [2020-10-15 03:45:22,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:22,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 03:45:22,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338190260] [2020-10-15 03:45:22,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 03:45:22,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 03:45:22,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:45:22,579 INFO L87 Difference]: Start difference. First operand 10782 states and 15451 transitions. Second operand 11 states. [2020-10-15 03:45:22,722 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-15 03:45:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:34,858 INFO L93 Difference]: Finished difference Result 50506 states and 72661 transitions. [2020-10-15 03:45:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:45:34,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-15 03:45:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:34,907 INFO L225 Difference]: With dead ends: 50506 [2020-10-15 03:45:34,907 INFO L226 Difference]: Without dead ends: 40748 [2020-10-15 03:45:34,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:45:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40748 states. [2020-10-15 03:45:38,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40748 to 14187. [2020-10-15 03:45:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14187 states. [2020-10-15 03:45:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14187 states to 14187 states and 20393 transitions. [2020-10-15 03:45:38,597 INFO L78 Accepts]: Start accepts. Automaton has 14187 states and 20393 transitions. Word has length 74 [2020-10-15 03:45:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:38,597 INFO L479 AbstractCegarLoop]: Abstraction has 14187 states and 20393 transitions. [2020-10-15 03:45:38,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 03:45:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14187 states and 20393 transitions. [2020-10-15 03:45:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:45:38,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:38,601 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] [2020-10-15 03:45:38,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:45:38,602 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash -597018213, now seen corresponding path program 1 times [2020-10-15 03:45:38,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:38,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998949148] [2020-10-15 03:45:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:38,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:45:38,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:45:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-15 03:45:38,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:38,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 03:45:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 03:45:38,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:39,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:39,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:39,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:45:39,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:39,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:39,135 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 03:45:39,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998949148] [2020-10-15 03:45:39,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:39,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:39,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498159964] [2020-10-15 03:45:39,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:39,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:39,137 INFO L87 Difference]: Start difference. First operand 14187 states and 20393 transitions. Second operand 4 states. [2020-10-15 03:45:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:46,423 INFO L93 Difference]: Finished difference Result 39567 states and 56611 transitions. [2020-10-15 03:45:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:46,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-15 03:45:46,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:46,450 INFO L225 Difference]: With dead ends: 39567 [2020-10-15 03:45:46,450 INFO L226 Difference]: Without dead ends: 26115 [2020-10-15 03:45:46,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:45:46,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26115 states. [2020-10-15 03:45:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26115 to 23989. [2020-10-15 03:45:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23989 states. [2020-10-15 03:45:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23989 states to 23989 states and 34087 transitions. [2020-10-15 03:45:52,288 INFO L78 Accepts]: Start accepts. Automaton has 23989 states and 34087 transitions. Word has length 74 [2020-10-15 03:45:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:52,289 INFO L479 AbstractCegarLoop]: Abstraction has 23989 states and 34087 transitions. [2020-10-15 03:45:52,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 23989 states and 34087 transitions. [2020-10-15 03:45:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:45:52,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:52,292 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] [2020-10-15 03:45:52,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:45:52,292 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:52,293 INFO L82 PathProgramCache]: Analyzing trace with hash -383380626, now seen corresponding path program 1 times [2020-10-15 03:45:52,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:52,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632573227] [2020-10-15 03:45:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:53,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:45:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:45:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-15 03:45:53,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:53,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:45:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:45:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:53,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:53,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:53,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:45:53,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:53,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:53,318 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 03:45:53,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632573227] [2020-10-15 03:45:53,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:53,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:45:53,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133476316] [2020-10-15 03:45:53,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:53,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:53,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:53,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:53,320 INFO L87 Difference]: Start difference. First operand 23989 states and 34087 transitions. Second operand 6 states. [2020-10-15 03:46:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:01,475 INFO L93 Difference]: Finished difference Result 43296 states and 61312 transitions. [2020-10-15 03:46:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:46:01,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:46:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:01,506 INFO L225 Difference]: With dead ends: 43296 [2020-10-15 03:46:01,506 INFO L226 Difference]: Without dead ends: 28263 [2020-10-15 03:46:01,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28263 states. [2020-10-15 03:46:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28263 to 20877. [2020-10-15 03:46:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20877 states. [2020-10-15 03:46:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20877 states to 20877 states and 29128 transitions. [2020-10-15 03:46:07,834 INFO L78 Accepts]: Start accepts. Automaton has 20877 states and 29128 transitions. Word has length 75 [2020-10-15 03:46:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:07,834 INFO L479 AbstractCegarLoop]: Abstraction has 20877 states and 29128 transitions. [2020-10-15 03:46:07,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:46:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20877 states and 29128 transitions. [2020-10-15 03:46:07,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:46:07,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:07,837 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] [2020-10-15 03:46:07,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:46:07,838 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:07,838 INFO L82 PathProgramCache]: Analyzing trace with hash -171528177, now seen corresponding path program 1 times [2020-10-15 03:46:07,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:07,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891420329] [2020-10-15 03:46:07,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:46:09,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:46:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-15 03:46:09,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:09,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 03:46:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:46:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:46:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:09,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:09,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:09,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:09,707 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 03:46:09,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891420329] [2020-10-15 03:46:09,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:09,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 03:46:09,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619071878] [2020-10-15 03:46:09,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 03:46:09,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:09,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 03:46:09,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:46:09,710 INFO L87 Difference]: Start difference. First operand 20877 states and 29128 transitions. Second operand 11 states. [2020-10-15 03:46:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:28,740 INFO L93 Difference]: Finished difference Result 82334 states and 114842 transitions. [2020-10-15 03:46:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:46:28,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-15 03:46:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:28,811 INFO L225 Difference]: With dead ends: 82334 [2020-10-15 03:46:28,811 INFO L226 Difference]: Without dead ends: 61743 [2020-10-15 03:46:28,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:46:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61743 states. [2020-10-15 03:46:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61743 to 25276. [2020-10-15 03:46:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25276 states. [2020-10-15 03:46:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25276 states to 25276 states and 35268 transitions. [2020-10-15 03:46:36,139 INFO L78 Accepts]: Start accepts. Automaton has 25276 states and 35268 transitions. Word has length 76 [2020-10-15 03:46:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:36,140 INFO L479 AbstractCegarLoop]: Abstraction has 25276 states and 35268 transitions. [2020-10-15 03:46:36,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 03:46:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 25276 states and 35268 transitions. [2020-10-15 03:46:36,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:46:36,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:36,142 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] [2020-10-15 03:46:36,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:46:36,142 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:36,143 INFO L82 PathProgramCache]: Analyzing trace with hash 711487775, now seen corresponding path program 1 times [2020-10-15 03:46:36,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:36,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229831416] [2020-10-15 03:46:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:36,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:36,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:36,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:46:36,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:46:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-15 03:46:36,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:36,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:46:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 03:46:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 03:46:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:36,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:36,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:36,570 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 03:46:36,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229831416] [2020-10-15 03:46:36,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:36,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:46:36,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561892309] [2020-10-15 03:46:36,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:46:36,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:36,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:46:36,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:46:36,572 INFO L87 Difference]: Start difference. First operand 25276 states and 35268 transitions. Second operand 4 states. [2020-10-15 03:46:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:51,201 INFO L93 Difference]: Finished difference Result 71859 states and 99784 transitions. [2020-10-15 03:46:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:46:51,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-15 03:46:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:51,249 INFO L225 Difference]: With dead ends: 71859 [2020-10-15 03:46:51,249 INFO L226 Difference]: Without dead ends: 47053 [2020-10-15 03:46:51,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:46:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47053 states.