/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.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:02:03,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:02:03,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:02:03,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:02:03,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:02:03,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:02:03,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:02:03,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:02:03,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:02:03,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:02:03,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:02:03,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:02:03,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:02:03,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:02:03,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:02:03,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:02:03,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:02:03,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:02:03,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:02:03,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:02:03,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:02:03,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:02:03,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:02:03,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:02:03,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:02:03,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:02:03,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:02:03,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:02:03,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:02:03,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:02:03,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:02:03,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:02:03,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:02:03,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:02:03,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:02:03,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:02:03,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:02:03,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:02:03,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:02:03,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:02:03,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:02:03,190 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 03:02:03,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:02:03,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:02:03,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:02:03,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:02:03,233 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:02:03,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:02:03,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:02:03,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:02:03,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:02:03,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:02:03,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:02:03,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:02:03,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:02:03,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:02:03,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:02:03,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:02:03,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:02:03,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:02:03,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:02:03,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:02:03,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:02:03,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:02:03,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:02:03,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:02:03,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:02:03,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:02:03,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:02:03,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:02:03,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:02:03,239 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 03:02:03,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:02:03,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:02:03,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:02:03,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:02:03,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:02:03,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:02:03,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5873a737e/abd78d04be9e40ad97d51aa90aec4c20/FLAG28bd8c20f [2020-10-15 03:02:04,184 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:02:04,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:02:04,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5873a737e/abd78d04be9e40ad97d51aa90aec4c20/FLAG28bd8c20f [2020-10-15 03:02:04,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5873a737e/abd78d04be9e40ad97d51aa90aec4c20 [2020-10-15 03:02:04,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:02:04,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:02:04,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:02:04,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:02:04,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:02:04,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:04" (1/1) ... [2020-10-15 03:02:04,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1be01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:04, skipping insertion in model container [2020-10-15 03:02:04,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:04" (1/1) ... [2020-10-15 03:02:04,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:02:04,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:02:05,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:02:05,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:02:05,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:02:05,264 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:02:05,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05 WrapperNode [2020-10-15 03:02:05,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:02:05,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:02:05,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:02:05,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:02:05,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2020-10-15 03:02:05,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2020-10-15 03:02:05,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2020-10-15 03:02:05,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2020-10-15 03:02:05,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2020-10-15 03:02:05,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2020-10-15 03:02:05,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (1/1) ... [2020-10-15 03:02:05,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:02:05,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:02:05,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:02:05,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:02:05,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (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 03:02:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:02:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:02:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:02:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:02:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:02:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:02:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:02:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:02:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:02:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:02:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:02:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:02:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:02:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:02:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:02:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:02:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:02:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:02:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:02:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:02:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:02:07,259 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:02:07,259 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:02:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:07 BoogieIcfgContainer [2020-10-15 03:02:07,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:02:07,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:02:07,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:02:07,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:02:07,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:04" (1/3) ... [2020-10-15 03:02:07,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1670f8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:07, skipping insertion in model container [2020-10-15 03:02:07,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05" (2/3) ... [2020-10-15 03:02:07,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1670f8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:07, skipping insertion in model container [2020-10-15 03:02:07,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:07" (3/3) ... [2020-10-15 03:02:07,277 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:02:07,289 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:02:07,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:02:07,324 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:02:07,366 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:02:07,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:02:07,366 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:02:07,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:02:07,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:02:07,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:02:07,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:02:07,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:02:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-15 03:02:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:02:07,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:07,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:07,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:07,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:07,415 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-15 03:02:07,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:07,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54334181] [2020-10-15 03:02:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:08,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:12,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:12,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:02:12,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:02:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-15 03:02:12,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:12,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:02:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 03:02:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:02:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:02:13,638 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:02:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:13,731 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 03:02:13,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54334181] [2020-10-15 03:02:13,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:13,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:02:13,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031443626] [2020-10-15 03:02:13,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:02:13,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:02:13,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:02:13,761 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 4 states. [2020-10-15 03:02:14,244 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:02:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:16,141 INFO L93 Difference]: Finished difference Result 577 states and 1002 transitions. [2020-10-15 03:02:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:16,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-15 03:02:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:16,178 INFO L225 Difference]: With dead ends: 577 [2020-10-15 03:02:16,179 INFO L226 Difference]: Without dead ends: 438 [2020-10-15 03:02:16,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-15 03:02:16,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2020-10-15 03:02:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-15 03:02:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 726 transitions. [2020-10-15 03:02:16,267 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 726 transitions. Word has length 115 [2020-10-15 03:02:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:16,268 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 726 transitions. [2020-10-15 03:02:16,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:02:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 726 transitions. [2020-10-15 03:02:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:02:16,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:16,275 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 03:02:16,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:02:16,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1947289558, now seen corresponding path program 1 times [2020-10-15 03:02:16,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:16,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593798689] [2020-10-15 03:02:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:16,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:21,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:02:21,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:02:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:02:21,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:21,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 03:02:21,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:21,872 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:02:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:21,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:21,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:02:21,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:21,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:21,954 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 03:02:21,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593798689] [2020-10-15 03:02:21,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:21,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:21,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809181176] [2020-10-15 03:02:21,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:21,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:21,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:21,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:21,960 INFO L87 Difference]: Start difference. First operand 436 states and 726 transitions. Second operand 5 states. [2020-10-15 03:02:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:23,808 INFO L93 Difference]: Finished difference Result 1234 states and 2053 transitions. [2020-10-15 03:02:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:23,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:02:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:23,822 INFO L225 Difference]: With dead ends: 1234 [2020-10-15 03:02:23,822 INFO L226 Difference]: Without dead ends: 831 [2020-10-15 03:02:23,832 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 03:02:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-10-15 03:02:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 829. [2020-10-15 03:02:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-10-15 03:02:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1372 transitions. [2020-10-15 03:02:23,914 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1372 transitions. Word has length 118 [2020-10-15 03:02:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:23,914 INFO L479 AbstractCegarLoop]: Abstraction has 829 states and 1372 transitions. [2020-10-15 03:02:23,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1372 transitions. [2020-10-15 03:02:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:02:23,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:23,919 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 03:02:23,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:02:23,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:23,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:23,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1045954500, now seen corresponding path program 1 times [2020-10-15 03:02:23,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:23,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740449338] [2020-10-15 03:02:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:28,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:28,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:02:28,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:02:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:02:28,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:28,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 03:02:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:29,639 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:02:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:29,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:29,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:29,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:02:29,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:29,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 03:02:29,880 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 03:02:29,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740449338] [2020-10-15 03:02:29,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:29,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:29,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984990756] [2020-10-15 03:02:29,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:29,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:29,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:29,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:29,883 INFO L87 Difference]: Start difference. First operand 829 states and 1372 transitions. Second operand 5 states. [2020-10-15 03:02:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:32,218 INFO L93 Difference]: Finished difference Result 2343 states and 3870 transitions. [2020-10-15 03:02:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:32,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:02:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:32,233 INFO L225 Difference]: With dead ends: 2343 [2020-10-15 03:02:32,233 INFO L226 Difference]: Without dead ends: 1625 [2020-10-15 03:02:32,236 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 03:02:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-10-15 03:02:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1623. [2020-10-15 03:02:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1623 states. [2020-10-15 03:02:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2680 transitions. [2020-10-15 03:02:32,360 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2680 transitions. Word has length 118 [2020-10-15 03:02:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:32,363 INFO L479 AbstractCegarLoop]: Abstraction has 1623 states and 2680 transitions. [2020-10-15 03:02:32,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2680 transitions. [2020-10-15 03:02:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:02:32,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:32,376 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 03:02:32,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:02:32,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1539145573, now seen corresponding path program 1 times [2020-10-15 03:02:32,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:32,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589147700] [2020-10-15 03:02:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:02:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:02:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 03:02:37,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:37,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:02:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:37,945 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:02:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:37,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:37,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:37,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:37,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:02:37,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:37,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:38,031 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 03:02:38,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589147700] [2020-10-15 03:02:38,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:38,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:38,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354116154] [2020-10-15 03:02:38,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:38,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:38,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:38,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:38,037 INFO L87 Difference]: Start difference. First operand 1623 states and 2680 transitions. Second operand 5 states. [2020-10-15 03:02:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:40,701 INFO L93 Difference]: Finished difference Result 4629 states and 7628 transitions. [2020-10-15 03:02:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:40,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:02:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:40,719 INFO L225 Difference]: With dead ends: 4629 [2020-10-15 03:02:40,720 INFO L226 Difference]: Without dead ends: 3143 [2020-10-15 03:02:40,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:02:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-15 03:02:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3141. [2020-10-15 03:02:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3141 states. [2020-10-15 03:02:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 5164 transitions. [2020-10-15 03:02:41,019 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 5164 transitions. Word has length 119 [2020-10-15 03:02:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:41,020 INFO L479 AbstractCegarLoop]: Abstraction has 3141 states and 5164 transitions. [2020-10-15 03:02:41,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 5164 transitions. [2020-10-15 03:02:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:02:41,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:41,028 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 03:02:41,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:02:41,029 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:41,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:41,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1419161785, now seen corresponding path program 1 times [2020-10-15 03:02:41,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:41,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640491889] [2020-10-15 03:02:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:41,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:41,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:46,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:46,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:02:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:02:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 03:02:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:46,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:02:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:46,532 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:02:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:46,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:46,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:02:46,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:46,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:02:46,606 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 03:02:46,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640491889] [2020-10-15 03:02:46,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:46,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:46,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580724824] [2020-10-15 03:02:46,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:46,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:46,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:46,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:46,609 INFO L87 Difference]: Start difference. First operand 3141 states and 5164 transitions. Second operand 5 states. [2020-10-15 03:02:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:48,917 INFO L93 Difference]: Finished difference Result 8870 states and 14528 transitions. [2020-10-15 03:02:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:48,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:02:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:48,948 INFO L225 Difference]: With dead ends: 8870 [2020-10-15 03:02:48,948 INFO L226 Difference]: Without dead ends: 6164 [2020-10-15 03:02:48,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:02:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6164 states. [2020-10-15 03:02:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6164 to 6162. [2020-10-15 03:02:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6162 states. [2020-10-15 03:02:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 10080 transitions. [2020-10-15 03:02:49,522 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 10080 transitions. Word has length 120 [2020-10-15 03:02:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:49,523 INFO L479 AbstractCegarLoop]: Abstraction has 6162 states and 10080 transitions. [2020-10-15 03:02:49,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 10080 transitions. [2020-10-15 03:02:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:02:49,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:49,536 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 03:02:49,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:02:49,537 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:49,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:49,537 INFO L82 PathProgramCache]: Analyzing trace with hash -641042893, now seen corresponding path program 1 times [2020-10-15 03:02:49,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:49,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863764960] [2020-10-15 03:02:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:52,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:54,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:54,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:02:54,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:02:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:02:54,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:54,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:54,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 03:02:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:02:55,121 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:02:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:55,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:55,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:55,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:55,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:02:55,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:55,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:55,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:55,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:55,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:55,192 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 03:02:55,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863764960] [2020-10-15 03:02:55,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:55,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:55,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096727122] [2020-10-15 03:02:55,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:55,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:55,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:55,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:55,196 INFO L87 Difference]: Start difference. First operand 6162 states and 10080 transitions. Second operand 5 states. [2020-10-15 03:02:57,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:57,515 INFO L93 Difference]: Finished difference Result 18236 states and 29838 transitions. [2020-10-15 03:02:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:57,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:02:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:57,568 INFO L225 Difference]: With dead ends: 18236 [2020-10-15 03:02:57,568 INFO L226 Difference]: Without dead ends: 12121 [2020-10-15 03:02:57,584 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 03:02:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2020-10-15 03:02:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 12119. [2020-10-15 03:02:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12119 states. [2020-10-15 03:02:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12119 states to 12119 states and 19718 transitions. [2020-10-15 03:02:58,508 INFO L78 Accepts]: Start accepts. Automaton has 12119 states and 19718 transitions. Word has length 120 [2020-10-15 03:02:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:58,508 INFO L479 AbstractCegarLoop]: Abstraction has 12119 states and 19718 transitions. [2020-10-15 03:02:58,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 12119 states and 19718 transitions. [2020-10-15 03:02:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:02:58,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:58,533 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 03:02:58,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:02:58,534 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:58,534 INFO L82 PathProgramCache]: Analyzing trace with hash 330401155, now seen corresponding path program 1 times [2020-10-15 03:02:58,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:58,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108256202] [2020-10-15 03:02:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:03:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:03:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:03:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:03,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:03:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:03:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:03:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:03,991 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:03:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:04,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:04,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:04,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:03:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:04,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:03:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:04,064 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 03:03:04,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108256202] [2020-10-15 03:03:04,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:04,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:03:04,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11797862] [2020-10-15 03:03:04,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:03:04,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:04,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:03:04,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:03:04,067 INFO L87 Difference]: Start difference. First operand 12119 states and 19718 transitions. Second operand 8 states. [2020-10-15 03:03:04,438 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-15 03:03:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:08,141 INFO L93 Difference]: Finished difference Result 26015 states and 42932 transitions. [2020-10-15 03:03:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:03:08,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-15 03:03:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:08,192 INFO L225 Difference]: With dead ends: 26015 [2020-10-15 03:03:08,192 INFO L226 Difference]: Without dead ends: 19053 [2020-10-15 03:03:08,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:03:08,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19053 states. [2020-10-15 03:03:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19053 to 13063. [2020-10-15 03:03:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13063 states. [2020-10-15 03:03:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13063 states to 13063 states and 21142 transitions. [2020-10-15 03:03:09,268 INFO L78 Accepts]: Start accepts. Automaton has 13063 states and 21142 transitions. Word has length 121 [2020-10-15 03:03:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:09,269 INFO L479 AbstractCegarLoop]: Abstraction has 13063 states and 21142 transitions. [2020-10-15 03:03:09,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:03:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13063 states and 21142 transitions. [2020-10-15 03:03:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:03:09,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:09,287 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 03:03:09,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:03:09,287 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash -431458831, now seen corresponding path program 1 times [2020-10-15 03:03:09,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:09,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437105456] [2020-10-15 03:03:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:09,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:12,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:12,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:03:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:03:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-15 03:03:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 03:03:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:03:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:13,194 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:03:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:13,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:13,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:13,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:03:13,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:13,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:13,244 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 03:03:13,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437105456] [2020-10-15 03:03:13,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:13,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:03:13,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574070859] [2020-10-15 03:03:13,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:03:13,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:13,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:03:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:13,246 INFO L87 Difference]: Start difference. First operand 13063 states and 21142 transitions. Second operand 4 states. [2020-10-15 03:03:13,625 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:03:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:17,082 INFO L93 Difference]: Finished difference Result 26411 states and 43256 transitions. [2020-10-15 03:03:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:17,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-15 03:03:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:17,124 INFO L225 Difference]: With dead ends: 26411 [2020-10-15 03:03:17,124 INFO L226 Difference]: Without dead ends: 19449 [2020-10-15 03:03:17,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19449 states. [2020-10-15 03:03:18,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19449 to 19447. [2020-10-15 03:03:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19447 states. [2020-10-15 03:03:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19447 states to 19447 states and 31590 transitions. [2020-10-15 03:03:18,565 INFO L78 Accepts]: Start accepts. Automaton has 19447 states and 31590 transitions. Word has length 121 [2020-10-15 03:03:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:18,566 INFO L479 AbstractCegarLoop]: Abstraction has 19447 states and 31590 transitions. [2020-10-15 03:03:18,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:03:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 19447 states and 31590 transitions. [2020-10-15 03:03:18,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 03:03:18,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:18,579 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] [2020-10-15 03:03:18,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:03:18,579 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:18,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1132593190, now seen corresponding path program 1 times [2020-10-15 03:03:18,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:18,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008475139] [2020-10-15 03:03:18,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:23,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:23,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 03:03:23,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:03:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 03:03:23,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:23,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 03:03:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:24,046 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:03:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:24,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:03:24,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:24,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:24,094 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 03:03:24,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008475139] [2020-10-15 03:03:24,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:24,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:24,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062658578] [2020-10-15 03:03:24,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:24,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:24,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:24,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:24,095 INFO L87 Difference]: Start difference. First operand 19447 states and 31590 transitions. Second operand 5 states. [2020-10-15 03:03:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:28,640 INFO L93 Difference]: Finished difference Result 57320 states and 93218 transitions. [2020-10-15 03:03:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:28,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-15 03:03:28,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:28,740 INFO L225 Difference]: With dead ends: 57320 [2020-10-15 03:03:28,740 INFO L226 Difference]: Without dead ends: 38094 [2020-10-15 03:03:28,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:03:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38094 states. [2020-10-15 03:03:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38094 to 38092. [2020-10-15 03:03:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38092 states. [2020-10-15 03:03:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38092 states to 38092 states and 61684 transitions. [2020-10-15 03:03:31,504 INFO L78 Accepts]: Start accepts. Automaton has 38092 states and 61684 transitions. Word has length 124 [2020-10-15 03:03:31,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:31,505 INFO L479 AbstractCegarLoop]: Abstraction has 38092 states and 61684 transitions. [2020-10-15 03:03:31,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 38092 states and 61684 transitions. [2020-10-15 03:03:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:03:31,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:31,542 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 03:03:31,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:03:31,543 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:31,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1067053773, now seen corresponding path program 1 times [2020-10-15 03:03:31,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:31,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142173466] [2020-10-15 03:03:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:36,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:36,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:03:36,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:03:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:03:36,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:36,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 03:03:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:37,075 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:03:37,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:37,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:37,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:37,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:37,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:03:37,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:37,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:37,140 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 03:03:37,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142173466] [2020-10-15 03:03:37,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:37,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:37,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262130591] [2020-10-15 03:03:37,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:37,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:37,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:37,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:37,142 INFO L87 Difference]: Start difference. First operand 38092 states and 61684 transitions. Second operand 5 states. [2020-10-15 03:03:45,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:45,831 INFO L93 Difference]: Finished difference Result 110830 states and 179284 transitions. [2020-10-15 03:03:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:45,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:03:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:45,935 INFO L225 Difference]: With dead ends: 110830 [2020-10-15 03:03:45,935 INFO L226 Difference]: Without dead ends: 74684 [2020-10-15 03:03:45,990 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 03:03:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74684 states. [2020-10-15 03:03:53,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74684 to 74682. [2020-10-15 03:03:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74682 states. [2020-10-15 03:03:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74682 states to 74682 states and 120282 transitions. [2020-10-15 03:03:53,695 INFO L78 Accepts]: Start accepts. Automaton has 74682 states and 120282 transitions. Word has length 125 [2020-10-15 03:03:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:53,696 INFO L479 AbstractCegarLoop]: Abstraction has 74682 states and 120282 transitions. [2020-10-15 03:03:53,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 74682 states and 120282 transitions. [2020-10-15 03:03:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:03:53,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:53,740 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 03:03:53,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:03:53,740 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2109429607, now seen corresponding path program 1 times [2020-10-15 03:03:53,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:53,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138966760] [2020-10-15 03:03:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:58,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:58,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:03:58,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:03:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 03:03:58,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:58,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 03:03:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:59,260 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:03:59,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:59,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:03:59,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:59,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:59,309 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 03:03:59,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138966760] [2020-10-15 03:03:59,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:59,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:59,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918104578] [2020-10-15 03:03:59,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:59,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:59,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:59,311 INFO L87 Difference]: Start difference. First operand 74682 states and 120282 transitions. Second operand 5 states. [2020-10-15 03:04:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:16,668 INFO L93 Difference]: Finished difference Result 217056 states and 349500 transitions. [2020-10-15 03:04:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:16,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:04:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:16,946 INFO L225 Difference]: With dead ends: 217056 [2020-10-15 03:04:16,946 INFO L226 Difference]: Without dead ends: 144754 [2020-10-15 03:04:17,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144754 states. [2020-10-15 03:04:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144754 to 144752. [2020-10-15 03:04:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144752 states. [2020-10-15 03:04:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144752 states to 144752 states and 231890 transitions. [2020-10-15 03:04:37,259 INFO L78 Accepts]: Start accepts. Automaton has 144752 states and 231890 transitions. Word has length 125 [2020-10-15 03:04:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:37,260 INFO L479 AbstractCegarLoop]: Abstraction has 144752 states and 231890 transitions. [2020-10-15 03:04:37,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 144752 states and 231890 transitions. [2020-10-15 03:04:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 03:04:37,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:37,347 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 03:04:37,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:04:37,347 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1863166572, now seen corresponding path program 1 times [2020-10-15 03:04:37,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:37,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848160721] [2020-10-15 03:04:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:37,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:38,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 03:04:42,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:42,870 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:04:42,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:42,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:42,949 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 03:04:42,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848160721] [2020-10-15 03:04:42,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:42,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:42,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825512190] [2020-10-15 03:04:42,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:42,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:42,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:42,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:42,951 INFO L87 Difference]: Start difference. First operand 144752 states and 231890 transitions. Second operand 5 states. [2020-10-15 03:05:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:21,224 INFO L93 Difference]: Finished difference Result 419202 states and 670750 transitions. [2020-10-15 03:05:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:21,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 03:05:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:21,834 INFO L225 Difference]: With dead ends: 419202 [2020-10-15 03:05:21,834 INFO L226 Difference]: Without dead ends: 283814 [2020-10-15 03:05:22,013 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 03:05:22,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283814 states.