/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_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:05:43,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:05:43,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:05:43,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:05:43,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:05:43,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:05:43,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:05:43,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:05:43,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:05:43,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:05:43,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:05:43,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:05:43,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:05:43,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:05:43,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:05:43,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:05:43,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:05:43,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:05:43,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:05:43,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:05:43,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:05:43,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:05:43,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:05:43,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:05:43,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:05:43,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:05:43,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:05:43,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:05:43,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:05:43,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:05:43,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:05:43,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:05:43,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:05:43,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:05:43,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:05:43,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:05:43,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:05:43,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:05:43,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:05:43,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:05:43,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:05:43,233 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 03:05:43,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:05:43,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:05:43,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:05:43,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:05:43,272 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:05:43,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:05:43,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:05:43,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:05:43,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:05:43,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:05:43,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:05:43,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:05:43,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:05:43,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:05:43,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:05:43,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:05:43,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:05:43,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:05:43,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:05:43,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:05:43,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:05:43,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:05:43,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:05:43,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:05:43,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:05:43,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:05:43,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:05:43,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:05:43,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:05:43,278 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 03:05:43,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:05:43,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:05:43,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:05:43,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:05:43,656 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:05:43,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:05:43,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4117e318c/4c5586edb0ae481ab6b60525e98109da/FLAG349c3adb5 [2020-10-15 03:05:44,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:05:44,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:05:44,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4117e318c/4c5586edb0ae481ab6b60525e98109da/FLAG349c3adb5 [2020-10-15 03:05:44,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4117e318c/4c5586edb0ae481ab6b60525e98109da [2020-10-15 03:05:44,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:05:44,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:05:44,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:05:44,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:05:44,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:05:44,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:44" (1/1) ... [2020-10-15 03:05:44,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:44, skipping insertion in model container [2020-10-15 03:05:44,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:44" (1/1) ... [2020-10-15 03:05:44,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:05:44,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:05:45,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:05:45,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:05:45,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:05:45,547 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:05:45,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45 WrapperNode [2020-10-15 03:05:45,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:05:45,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:05:45,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:05:45,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:05:45,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (1/1) ... [2020-10-15 03:05:45,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (1/1) ... [2020-10-15 03:05:45,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (1/1) ... [2020-10-15 03:05:45,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (1/1) ... [2020-10-15 03:05:45,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (1/1) ... [2020-10-15 03:05:45,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (1/1) ... [2020-10-15 03:05:45,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (1/1) ... [2020-10-15 03:05:45,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:05:45,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:05:45,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:05:45,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:05:45,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (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 03:05:45,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:05:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:05:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:05:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:05:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:05:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:05:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:05:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:05:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:05:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:05:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:05:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:05:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:05:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:05:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:05:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:05:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:05:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:05:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:05:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:05:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:05:47,309 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:05:47,309 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:05:47,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:47 BoogieIcfgContainer [2020-10-15 03:05:47,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:05:47,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:05:47,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:05:47,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:05:47,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:05:44" (1/3) ... [2020-10-15 03:05:47,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ceb867a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:47, skipping insertion in model container [2020-10-15 03:05:47,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:45" (2/3) ... [2020-10-15 03:05:47,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ceb867a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:47, skipping insertion in model container [2020-10-15 03:05:47,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:47" (3/3) ... [2020-10-15 03:05:47,328 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:05:47,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:05:47,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:05:47,367 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:05:47,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:05:47,395 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:05:47,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:05:47,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:05:47,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:05:47,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:05:47,396 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:05:47,396 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:05:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-15 03:05:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:05:47,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:47,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:47,440 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-15 03:05:47,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:47,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385287010] [2020-10-15 03:05:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:49,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:49,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:52,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:05:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:05:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:05:52,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:52,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:05:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 03:05:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:05:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:05:53,564 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:05:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:53,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:53,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:53,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:05:53,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:53,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:53,640 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 03:05:53,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385287010] [2020-10-15 03:05:53,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:53,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:05:53,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106267140] [2020-10-15 03:05:53,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:05:53,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:53,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:05:53,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:05:53,670 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 4 states. [2020-10-15 03:05:54,186 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:05:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:56,679 INFO L93 Difference]: Finished difference Result 577 states and 1002 transitions. [2020-10-15 03:05:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:56,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-15 03:05:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:56,699 INFO L225 Difference]: With dead ends: 577 [2020-10-15 03:05:56,700 INFO L226 Difference]: Without dead ends: 438 [2020-10-15 03:05:56,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-15 03:05:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2020-10-15 03:05:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-15 03:05:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 726 transitions. [2020-10-15 03:05:56,788 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 726 transitions. Word has length 115 [2020-10-15 03:05:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:56,789 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 726 transitions. [2020-10-15 03:05:56,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:05:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 726 transitions. [2020-10-15 03:05:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:05:56,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:56,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:56,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:05:56,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash 287483234, now seen corresponding path program 1 times [2020-10-15 03:05:56,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:56,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236690273] [2020-10-15 03:05:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:56,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:01,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:06:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:06:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 03:06:01,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:01,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:06:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:02,233 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-10-15 03:06:02,729 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:02,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:02,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:06:02,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:02,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:02,810 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 03:06:02,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236690273] [2020-10-15 03:06:02,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:02,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:02,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552229634] [2020-10-15 03:06:02,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:02,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:02,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:02,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:02,815 INFO L87 Difference]: Start difference. First operand 436 states and 726 transitions. Second operand 5 states. [2020-10-15 03:06:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:05,512 INFO L93 Difference]: Finished difference Result 1203 states and 1996 transitions. [2020-10-15 03:06:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:05,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:06:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:05,523 INFO L225 Difference]: With dead ends: 1203 [2020-10-15 03:06:05,523 INFO L226 Difference]: Without dead ends: 844 [2020-10-15 03:06:05,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-15 03:06:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 842. [2020-10-15 03:06:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-10-15 03:06:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1400 transitions. [2020-10-15 03:06:05,607 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1400 transitions. Word has length 118 [2020-10-15 03:06:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:05,607 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1400 transitions. [2020-10-15 03:06:05,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1400 transitions. [2020-10-15 03:06:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:06:05,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:05,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:05,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:06:05,612 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:05,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1817101680, now seen corresponding path program 1 times [2020-10-15 03:06:05,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:05,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372233857] [2020-10-15 03:06:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:10,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:10,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:06:10,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:06:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:06:10,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:10,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:06:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:11,309 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:11,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:11,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:11,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:11,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:11,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:06:11,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:11,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:11,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:06:11,441 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 03:06:11,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372233857] [2020-10-15 03:06:11,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:11,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:11,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124815294] [2020-10-15 03:06:11,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:11,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:11,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:11,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:11,445 INFO L87 Difference]: Start difference. First operand 842 states and 1400 transitions. Second operand 5 states. [2020-10-15 03:06:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:13,961 INFO L93 Difference]: Finished difference Result 2396 states and 3973 transitions. [2020-10-15 03:06:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:13,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:06:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:13,976 INFO L225 Difference]: With dead ends: 2396 [2020-10-15 03:06:13,976 INFO L226 Difference]: Without dead ends: 1623 [2020-10-15 03:06:13,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2020-10-15 03:06:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1621. [2020-10-15 03:06:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2020-10-15 03:06:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2675 transitions. [2020-10-15 03:06:14,090 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2675 transitions. Word has length 118 [2020-10-15 03:06:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:14,091 INFO L479 AbstractCegarLoop]: Abstraction has 1621 states and 2675 transitions. [2020-10-15 03:06:14,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2675 transitions. [2020-10-15 03:06:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:06:14,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:14,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:14,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:06:14,101 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1929760512, now seen corresponding path program 1 times [2020-10-15 03:06:14,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:14,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022428915] [2020-10-15 03:06:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:14,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:19,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:19,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:06:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:06:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 03:06:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:19,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:06:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:19,698 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:19,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:19,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:19,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:06:19,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:19,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:19,794 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 03:06:19,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022428915] [2020-10-15 03:06:19,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:19,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:19,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279732626] [2020-10-15 03:06:19,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:19,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:19,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:19,799 INFO L87 Difference]: Start difference. First operand 1621 states and 2675 transitions. Second operand 5 states. [2020-10-15 03:06:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:22,627 INFO L93 Difference]: Finished difference Result 4715 states and 7772 transitions. [2020-10-15 03:06:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:22,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:06:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:22,658 INFO L225 Difference]: With dead ends: 4715 [2020-10-15 03:06:22,658 INFO L226 Difference]: Without dead ends: 3169 [2020-10-15 03:06:22,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2020-10-15 03:06:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3167. [2020-10-15 03:06:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-10-15 03:06:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 5205 transitions. [2020-10-15 03:06:22,904 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 5205 transitions. Word has length 119 [2020-10-15 03:06:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:22,905 INFO L479 AbstractCegarLoop]: Abstraction has 3167 states and 5205 transitions. [2020-10-15 03:06:22,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:22,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 5205 transitions. [2020-10-15 03:06:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:06:22,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:22,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:22,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:06:22,915 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1818313723, now seen corresponding path program 1 times [2020-10-15 03:06:22,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:22,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166452491] [2020-10-15 03:06:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:22,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:27,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:06:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:06:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:06:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:27,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:06:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:28,462 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:28,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:28,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:06:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:28,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:28,536 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 03:06:28,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166452491] [2020-10-15 03:06:28,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:28,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:28,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256873095] [2020-10-15 03:06:28,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:28,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:28,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:28,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:28,539 INFO L87 Difference]: Start difference. First operand 3167 states and 5205 transitions. Second operand 5 states. [2020-10-15 03:06:31,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:31,061 INFO L93 Difference]: Finished difference Result 9315 states and 15309 transitions. [2020-10-15 03:06:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:31,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:06:31,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:31,092 INFO L225 Difference]: With dead ends: 9315 [2020-10-15 03:06:31,092 INFO L226 Difference]: Without dead ends: 6161 [2020-10-15 03:06:31,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2020-10-15 03:06:31,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 6159. [2020-10-15 03:06:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6159 states. [2020-10-15 03:06:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 10064 transitions. [2020-10-15 03:06:31,601 INFO L78 Accepts]: Start accepts. Automaton has 6159 states and 10064 transitions. Word has length 120 [2020-10-15 03:06:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:31,602 INFO L479 AbstractCegarLoop]: Abstraction has 6159 states and 10064 transitions. [2020-10-15 03:06:31,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6159 states and 10064 transitions. [2020-10-15 03:06:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:06:31,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:31,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:31,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:06:31,617 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:31,617 INFO L82 PathProgramCache]: Analyzing trace with hash 316250505, now seen corresponding path program 1 times [2020-10-15 03:06:31,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:31,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163504089] [2020-10-15 03:06:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:31,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:36,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:06:36,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:06:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:06:36,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:36,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:06:36,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:37,150 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:37,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:37,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:37,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:37,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:37,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:06:37,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:37,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:37,236 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 03:06:37,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163504089] [2020-10-15 03:06:37,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:37,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:37,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010501180] [2020-10-15 03:06:37,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:37,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:37,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:37,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:37,241 INFO L87 Difference]: Start difference. First operand 6159 states and 10064 transitions. Second operand 5 states. [2020-10-15 03:06:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:40,337 INFO L93 Difference]: Finished difference Result 17265 states and 28095 transitions. [2020-10-15 03:06:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:40,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:06:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:40,399 INFO L225 Difference]: With dead ends: 17265 [2020-10-15 03:06:40,399 INFO L226 Difference]: Without dead ends: 11927 [2020-10-15 03:06:40,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11927 states. [2020-10-15 03:06:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11927 to 11925. [2020-10-15 03:06:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11925 states. [2020-10-15 03:06:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11925 states to 11925 states and 19357 transitions. [2020-10-15 03:06:41,476 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 19357 transitions. Word has length 120 [2020-10-15 03:06:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:41,476 INFO L479 AbstractCegarLoop]: Abstraction has 11925 states and 19357 transitions. [2020-10-15 03:06:41,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 19357 transitions. [2020-10-15 03:06:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:06:41,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:41,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:41,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:06:41,508 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:41,508 INFO L82 PathProgramCache]: Analyzing trace with hash -657988896, now seen corresponding path program 1 times [2020-10-15 03:06:41,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:41,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846709567] [2020-10-15 03:06:41,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:41,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:46,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:46,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:06:46,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:06:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:06:46,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:46,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:06:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:06:46,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 03:06:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:47,135 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:47,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:47,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 03:06:47,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:47,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:06:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:06:47,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:47,240 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 03:06:47,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846709567] [2020-10-15 03:06:47,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:47,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:06:47,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691724796] [2020-10-15 03:06:47,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:06:47,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:06:47,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:06:47,242 INFO L87 Difference]: Start difference. First operand 11925 states and 19357 transitions. Second operand 8 states. [2020-10-15 03:06:47,694 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-15 03:06:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:51,927 INFO L93 Difference]: Finished difference Result 24611 states and 40533 transitions. [2020-10-15 03:06:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:06:51,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-15 03:06:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:51,990 INFO L225 Difference]: With dead ends: 24611 [2020-10-15 03:06:51,991 INFO L226 Difference]: Without dead ends: 17649 [2020-10-15 03:06:52,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:06:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17649 states. [2020-10-15 03:06:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17649 to 13621. [2020-10-15 03:06:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13621 states. [2020-10-15 03:06:54,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13621 states to 13621 states and 22061 transitions. [2020-10-15 03:06:54,131 INFO L78 Accepts]: Start accepts. Automaton has 13621 states and 22061 transitions. Word has length 121 [2020-10-15 03:06:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:54,132 INFO L479 AbstractCegarLoop]: Abstraction has 13621 states and 22061 transitions. [2020-10-15 03:06:54,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:06:54,132 INFO L276 IsEmpty]: Start isEmpty. Operand 13621 states and 22061 transitions. [2020-10-15 03:06:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:06:54,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:54,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:54,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:06:54,154 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:54,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:54,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1201679816, now seen corresponding path program 1 times [2020-10-15 03:06:54,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:54,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697459653] [2020-10-15 03:06:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:58,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:58,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:06:58,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:06:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4038 [2020-10-15 03:06:58,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:58,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:06:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 03:06:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:06:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:58,649 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:58,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:58,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:58,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:06:58,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:58,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:58,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:58,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:58,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:58,694 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 03:06:58,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697459653] [2020-10-15 03:06:58,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:58,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:06:58,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577146859] [2020-10-15 03:06:58,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:06:58,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:58,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:06:58,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:06:58,697 INFO L87 Difference]: Start difference. First operand 13621 states and 22061 transitions. Second operand 4 states. [2020-10-15 03:06:59,126 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:07:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:02,479 INFO L93 Difference]: Finished difference Result 27001 states and 44271 transitions. [2020-10-15 03:07:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:02,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-15 03:07:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:02,540 INFO L225 Difference]: With dead ends: 27001 [2020-10-15 03:07:02,541 INFO L226 Difference]: Without dead ends: 20039 [2020-10-15 03:07:02,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20039 states. [2020-10-15 03:07:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20039 to 20037. [2020-10-15 03:07:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20037 states. [2020-10-15 03:07:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20037 states to 20037 states and 32605 transitions. [2020-10-15 03:07:04,374 INFO L78 Accepts]: Start accepts. Automaton has 20037 states and 32605 transitions. Word has length 121 [2020-10-15 03:07:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:04,374 INFO L479 AbstractCegarLoop]: Abstraction has 20037 states and 32605 transitions. [2020-10-15 03:07:04,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:07:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 20037 states and 32605 transitions. [2020-10-15 03:07:04,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:07:04,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:04,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:04,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:07:04,391 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:04,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash -947515135, now seen corresponding path program 1 times [2020-10-15 03:07:04,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:04,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078389111] [2020-10-15 03:07:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:09,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 03:07:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:09,950 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:07:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:09,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:09,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:09,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:07:09,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:09,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:10,031 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 03:07:10,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078389111] [2020-10-15 03:07:10,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:10,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:10,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268011982] [2020-10-15 03:07:10,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:10,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:10,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:10,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:10,033 INFO L87 Difference]: Start difference. First operand 20037 states and 32605 transitions. Second operand 5 states. [2020-10-15 03:07:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:15,995 INFO L93 Difference]: Finished difference Result 58059 states and 94407 transitions. [2020-10-15 03:07:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:15,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:07:15,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:16,092 INFO L225 Difference]: With dead ends: 58059 [2020-10-15 03:07:16,093 INFO L226 Difference]: Without dead ends: 39257 [2020-10-15 03:07:16,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39257 states. [2020-10-15 03:07:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39257 to 39255. [2020-10-15 03:07:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39255 states. [2020-10-15 03:07:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39255 states to 39255 states and 63625 transitions. [2020-10-15 03:07:19,765 INFO L78 Accepts]: Start accepts. Automaton has 39255 states and 63625 transitions. Word has length 125 [2020-10-15 03:07:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:19,766 INFO L479 AbstractCegarLoop]: Abstraction has 39255 states and 63625 transitions. [2020-10-15 03:07:19,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 39255 states and 63625 transitions. [2020-10-15 03:07:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:07:19,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:19,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:19,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:07:19,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:19,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1451949857, now seen corresponding path program 1 times [2020-10-15 03:07:19,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:19,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603748159] [2020-10-15 03:07:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:07:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:07:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:07:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 03:07:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-15 03:07:25,423 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:07:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:25,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:25,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:07:25,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:25,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:25,493 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 03:07:25,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603748159] [2020-10-15 03:07:25,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:25,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:25,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006360117] [2020-10-15 03:07:25,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:25,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:25,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:25,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:25,495 INFO L87 Difference]: Start difference. First operand 39255 states and 63625 transitions. Second operand 5 states. [2020-10-15 03:07:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:36,823 INFO L93 Difference]: Finished difference Result 112329 states and 181585 transitions. [2020-10-15 03:07:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:36,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:07:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:36,977 INFO L225 Difference]: With dead ends: 112329 [2020-10-15 03:07:36,978 INFO L226 Difference]: Without dead ends: 76247 [2020-10-15 03:07:37,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:37,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76247 states. [2020-10-15 03:07:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76247 to 76245. [2020-10-15 03:07:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76245 states. [2020-10-15 03:07:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76245 states to 76245 states and 122747 transitions. [2020-10-15 03:07:45,170 INFO L78 Accepts]: Start accepts. Automaton has 76245 states and 122747 transitions. Word has length 125 [2020-10-15 03:07:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:45,170 INFO L479 AbstractCegarLoop]: Abstraction has 76245 states and 122747 transitions. [2020-10-15 03:07:45,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 76245 states and 122747 transitions. [2020-10-15 03:07:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 03:07:45,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:45,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:45,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:07:45,214 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:45,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1356800596, now seen corresponding path program 1 times [2020-10-15 03:07:45,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:45,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118816558] [2020-10-15 03:07:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:46,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:50,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:50,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 03:07:50,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:07:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 03:07:50,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:50,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 03:07:50,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:50,757 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:07:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:50,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:50,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:50,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:07:50,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:50,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:50,821 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 03:07:50,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118816558] [2020-10-15 03:07:50,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:50,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:50,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174258740] [2020-10-15 03:07:50,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:50,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:50,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:50,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:50,823 INFO L87 Difference]: Start difference. First operand 76245 states and 122747 transitions. Second operand 5 states. [2020-10-15 03:08:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:11,079 INFO L93 Difference]: Finished difference Result 224728 states and 361869 transitions. [2020-10-15 03:08:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:11,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 03:08:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:11,431 INFO L225 Difference]: With dead ends: 224728 [2020-10-15 03:08:11,432 INFO L226 Difference]: Without dead ends: 149052 [2020-10-15 03:08:11,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149052 states. [2020-10-15 03:08:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149052 to 149050. [2020-10-15 03:08:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149050 states. [2020-10-15 03:08:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149050 states to 149050 states and 238871 transitions. [2020-10-15 03:08:31,617 INFO L78 Accepts]: Start accepts. Automaton has 149050 states and 238871 transitions. Word has length 126 [2020-10-15 03:08:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:31,617 INFO L479 AbstractCegarLoop]: Abstraction has 149050 states and 238871 transitions. [2020-10-15 03:08:31,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 149050 states and 238871 transitions. [2020-10-15 03:08:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 03:08:31,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:31,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:31,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:08:31,701 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:31,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:31,701 INFO L82 PathProgramCache]: Analyzing trace with hash -605496695, now seen corresponding path program 1 times [2020-10-15 03:08:31,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:31,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518967123] [2020-10-15 03:08:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:36,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 03:08:36,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:08:36,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:08:36,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:36,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 03:08:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:37,213 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:08:37,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:37,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:37,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:37,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:37,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:08:37,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:37,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:37,284 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 03:08:37,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518967123] [2020-10-15 03:08:37,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:37,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:37,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513448860] [2020-10-15 03:08:37,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:37,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:37,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:37,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:37,287 INFO L87 Difference]: Start difference. First operand 149050 states and 238871 transitions. Second operand 5 states. [2020-10-15 03:09:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:20,081 INFO L93 Difference]: Finished difference Result 432740 states and 692347 transitions. [2020-10-15 03:09:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:20,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 03:09:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:20,686 INFO L225 Difference]: With dead ends: 432740 [2020-10-15 03:09:20,687 INFO L226 Difference]: Without dead ends: 290786 [2020-10-15 03:09:20,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:09:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290786 states.