/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.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:02:02,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:02:02,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:02:02,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:02:02,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:02:02,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:02:02,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:02:02,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:02:02,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:02:02,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:02:02,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:02:02,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:02:02,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:02:02,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:02:02,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:02:02,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:02:02,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:02:02,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:02:02,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:02:02,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:02:02,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:02:02,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:02:02,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:02:02,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:02:02,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:02:02,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:02:02,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:02:02,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:02:02,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:02:02,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:02:02,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:02:02,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:02:02,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:02:02,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:02:02,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:02:02,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:02:02,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:02:02,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:02:02,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:02:02,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:02:02,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:02:02,251 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 03:02:02,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:02:02,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:02:02,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:02:02,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:02:02,279 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:02:02,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:02:02,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:02:02,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:02:02,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:02:02,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:02:02,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:02:02,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:02:02,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:02:02,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:02:02,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:02:02,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:02:02,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:02:02,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:02:02,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:02:02,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:02:02,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:02:02,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:02:02,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:02:02,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:02:02,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:02:02,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:02:02,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:02:02,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:02:02,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:02:02,288 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 03:02:02,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:02:02,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:02:02,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:02:02,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:02:02,645 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:02:02,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:02:02,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b1f4104/751657498ea143daaeb7c81bccf7ca9d/FLAGb086ce47b [2020-10-15 03:02:03,329 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:02:03,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:02:03,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b1f4104/751657498ea143daaeb7c81bccf7ca9d/FLAGb086ce47b [2020-10-15 03:02:03,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b1f4104/751657498ea143daaeb7c81bccf7ca9d [2020-10-15 03:02:03,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:02:03,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:02:03,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:02:03,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:02:03,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:02:03,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:03" (1/1) ... [2020-10-15 03:02:03,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a00abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:03, skipping insertion in model container [2020-10-15 03:02:03,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:03" (1/1) ... [2020-10-15 03:02:03,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:02:03,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:02:04,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:02:04,640 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:02:05,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:02:05,376 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:02:05,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:05 WrapperNode [2020-10-15 03:02:05,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:02:05,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:02:05,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:02:05,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:02:05,403 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 03:02:05,407 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 03:02:05,480 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 03:02:05,480 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 03:02:05,535 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 03:02:05,572 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 03:02:05,582 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 03:02:05,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:02:05,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:02:05,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:02:05,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:02:05,606 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 03:02:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:02:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:02:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:02:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:02:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:02:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:02:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:02:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:02:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:02:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:02:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:02:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:02:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:02:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:02:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:02:05,733 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:02:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:02:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:02:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:02:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:02:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:02:05,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:02:08,619 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:02:08,623 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:02:08,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:08 BoogieIcfgContainer [2020-10-15 03:02:08,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:02:08,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:02:08,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:02:08,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:02:08,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:03" (1/3) ... [2020-10-15 03:02:08,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b05128b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:08, skipping insertion in model container [2020-10-15 03:02:08,650 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 03:02:08,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b05128b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:08, skipping insertion in model container [2020-10-15 03:02:08,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:08" (3/3) ... [2020-10-15 03:02:08,653 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:02:08,664 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:02:08,674 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:02:08,690 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:02:08,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:02:08,724 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:02:08,724 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:02:08,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:02:08,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:02:08,725 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:02:08,725 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:02:08,725 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:02:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states. [2020-10-15 03:02:08,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-15 03:02:08,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:08,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:08,818 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2120907628, now seen corresponding path program 1 times [2020-10-15 03:02:08,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:08,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863110499] [2020-10-15 03:02:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:12,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:12,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-15 03:02:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:02:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 03:02:14,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:14,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:02:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-15 03:02:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-15 03:02:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:02:15,654 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:02:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:15,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:15,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:15,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:02:15,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:15,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:15,893 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 03:02:15,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863110499] [2020-10-15 03:02:15,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:15,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:02:15,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445918442] [2020-10-15 03:02:15,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:02:15,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:02:15,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:02:15,925 INFO L87 Difference]: Start difference. First operand 725 states. Second operand 4 states. [2020-10-15 03:02:16,434 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-15 03:02:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:21,242 INFO L93 Difference]: Finished difference Result 1307 states and 2294 transitions. [2020-10-15 03:02:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:21,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2020-10-15 03:02:21,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:21,274 INFO L225 Difference]: With dead ends: 1307 [2020-10-15 03:02:21,274 INFO L226 Difference]: Without dead ends: 1146 [2020-10-15 03:02:21,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2020-10-15 03:02:21,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1144. [2020-10-15 03:02:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-10-15 03:02:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1773 transitions. [2020-10-15 03:02:21,412 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1773 transitions. Word has length 302 [2020-10-15 03:02:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:21,414 INFO L479 AbstractCegarLoop]: Abstraction has 1144 states and 1773 transitions. [2020-10-15 03:02:21,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:02:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1773 transitions. [2020-10-15 03:02:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-15 03:02:21,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:21,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:21,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:02:21,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:21,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:21,425 INFO L82 PathProgramCache]: Analyzing trace with hash 309282288, now seen corresponding path program 1 times [2020-10-15 03:02:21,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:21,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259054220] [2020-10-15 03:02:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:23,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:26,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:26,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-15 03:02:26,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:02:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-15 03:02:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:26,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-15 03:02:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:02:27,452 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:02:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:27,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:27,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 03:02:27,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:27,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:27,778 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 03:02:27,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259054220] [2020-10-15 03:02:27,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:27,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:27,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146217943] [2020-10-15 03:02:27,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:27,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:27,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:27,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:27,786 INFO L87 Difference]: Start difference. First operand 1144 states and 1773 transitions. Second operand 5 states. [2020-10-15 03:02:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:35,341 INFO L93 Difference]: Finished difference Result 3347 states and 5179 transitions. [2020-10-15 03:02:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:35,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-15 03:02:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:35,355 INFO L225 Difference]: With dead ends: 3347 [2020-10-15 03:02:35,355 INFO L226 Difference]: Without dead ends: 2230 [2020-10-15 03:02:35,361 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 03:02:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2020-10-15 03:02:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2228. [2020-10-15 03:02:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2020-10-15 03:02:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3430 transitions. [2020-10-15 03:02:35,483 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3430 transitions. Word has length 302 [2020-10-15 03:02:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:35,483 INFO L479 AbstractCegarLoop]: Abstraction has 2228 states and 3430 transitions. [2020-10-15 03:02:35,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3430 transitions. [2020-10-15 03:02:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-15 03:02:35,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:35,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:35,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:02:35,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:35,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1247063606, now seen corresponding path program 1 times [2020-10-15 03:02:35,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:35,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473559545] [2020-10-15 03:02:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:37,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-15 03:02:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:02:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:02:40,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:40,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-15 03:02:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:41,259 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:02:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:41,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:41,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:41,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:02:41,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:41,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:41,705 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 03:02:41,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473559545] [2020-10-15 03:02:41,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:41,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:41,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641211667] [2020-10-15 03:02:41,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:41,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:41,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:41,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:41,717 INFO L87 Difference]: Start difference. First operand 2228 states and 3430 transitions. Second operand 5 states. [2020-10-15 03:02:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:02:48,813 INFO L93 Difference]: Finished difference Result 6521 states and 10020 transitions. [2020-10-15 03:02:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:02:48,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-15 03:02:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:02:48,839 INFO L225 Difference]: With dead ends: 6521 [2020-10-15 03:02:48,839 INFO L226 Difference]: Without dead ends: 4343 [2020-10-15 03:02:48,844 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 03:02:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2020-10-15 03:02:49,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 4341. [2020-10-15 03:02:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4341 states. [2020-10-15 03:02:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 6634 transitions. [2020-10-15 03:02:49,037 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 6634 transitions. Word has length 304 [2020-10-15 03:02:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:02:49,038 INFO L479 AbstractCegarLoop]: Abstraction has 4341 states and 6634 transitions. [2020-10-15 03:02:49,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:02:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 6634 transitions. [2020-10-15 03:02:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-15 03:02:49,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:49,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:49,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:02:49,051 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:49,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:49,052 INFO L82 PathProgramCache]: Analyzing trace with hash 923736305, now seen corresponding path program 1 times [2020-10-15 03:02:49,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:49,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169788218] [2020-10-15 03:02:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:02:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:49,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-15 03:02:54,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:02:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 03:02:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:54,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:02:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:02:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-15 03:02:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:54,689 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:02:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:02:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:02:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:02:54,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:02:54,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:02:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:02:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:02:54,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:02:54,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:02:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:02:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:02:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:02:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:02:54,868 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 03:02:54,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169788218] [2020-10-15 03:02:54,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:02:54,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:02:54,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11584540] [2020-10-15 03:02:54,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:02:54,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:02:54,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:02:54,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:02:54,871 INFO L87 Difference]: Start difference. First operand 4341 states and 6634 transitions. Second operand 5 states. [2020-10-15 03:03:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:01,723 INFO L93 Difference]: Finished difference Result 12691 states and 19354 transitions. [2020-10-15 03:03:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:01,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-15 03:03:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:01,766 INFO L225 Difference]: With dead ends: 12691 [2020-10-15 03:03:01,767 INFO L226 Difference]: Without dead ends: 8449 [2020-10-15 03:03:01,779 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 03:03:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8449 states. [2020-10-15 03:03:02,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8449 to 8447. [2020-10-15 03:03:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8447 states. [2020-10-15 03:03:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8447 states to 8447 states and 12805 transitions. [2020-10-15 03:03:02,211 INFO L78 Accepts]: Start accepts. Automaton has 8447 states and 12805 transitions. Word has length 306 [2020-10-15 03:03:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:02,212 INFO L479 AbstractCegarLoop]: Abstraction has 8447 states and 12805 transitions. [2020-10-15 03:03:02,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8447 states and 12805 transitions. [2020-10-15 03:03:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-15 03:03:02,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:02,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:02,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:03:02,236 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:02,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1028466634, now seen corresponding path program 1 times [2020-10-15 03:03:02,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:02,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101735581] [2020-10-15 03:03:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:07,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:07,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-15 03:03:07,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:03:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:03:07,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:07,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:03:07,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:03:07,972 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:07,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:07,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:07,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:07,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:03:07,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:07,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:08,133 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 03:03:08,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101735581] [2020-10-15 03:03:08,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:08,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:08,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001898396] [2020-10-15 03:03:08,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:08,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:08,135 INFO L87 Difference]: Start difference. First operand 8447 states and 12805 transitions. Second operand 5 states. [2020-10-15 03:03:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:16,129 INFO L93 Difference]: Finished difference Result 24847 states and 37607 transitions. [2020-10-15 03:03:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:16,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-15 03:03:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:16,211 INFO L225 Difference]: With dead ends: 24847 [2020-10-15 03:03:16,211 INFO L226 Difference]: Without dead ends: 16601 [2020-10-15 03:03:16,233 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 03:03:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16601 states. [2020-10-15 03:03:17,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16601 to 16599. [2020-10-15 03:03:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16599 states. [2020-10-15 03:03:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16599 states to 16599 states and 25004 transitions. [2020-10-15 03:03:17,094 INFO L78 Accepts]: Start accepts. Automaton has 16599 states and 25004 transitions. Word has length 308 [2020-10-15 03:03:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:17,094 INFO L479 AbstractCegarLoop]: Abstraction has 16599 states and 25004 transitions. [2020-10-15 03:03:17,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 16599 states and 25004 transitions. [2020-10-15 03:03:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-15 03:03:17,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:17,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:17,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:03:17,134 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:17,135 INFO L82 PathProgramCache]: Analyzing trace with hash -74114766, now seen corresponding path program 1 times [2020-10-15 03:03:17,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:17,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519322279] [2020-10-15 03:03:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:18,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-15 03:03:22,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:03:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:03:22,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:22,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 03:03:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:22,717 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:03:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:22,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:22,935 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 03:03:22,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519322279] [2020-10-15 03:03:22,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:22,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:22,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304365819] [2020-10-15 03:03:22,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:22,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:22,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:22,939 INFO L87 Difference]: Start difference. First operand 16599 states and 25004 transitions. Second operand 5 states. [2020-10-15 03:03:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:31,728 INFO L93 Difference]: Finished difference Result 48855 states and 73503 transitions. [2020-10-15 03:03:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:31,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-15 03:03:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:31,806 INFO L225 Difference]: With dead ends: 48855 [2020-10-15 03:03:31,806 INFO L226 Difference]: Without dead ends: 32493 [2020-10-15 03:03:31,892 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 03:03:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32493 states. [2020-10-15 03:03:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32493 to 32491. [2020-10-15 03:03:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32491 states. [2020-10-15 03:03:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32491 states to 32491 states and 48613 transitions. [2020-10-15 03:03:34,818 INFO L78 Accepts]: Start accepts. Automaton has 32491 states and 48613 transitions. Word has length 310 [2020-10-15 03:03:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:34,819 INFO L479 AbstractCegarLoop]: Abstraction has 32491 states and 48613 transitions. [2020-10-15 03:03:34,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 32491 states and 48613 transitions. [2020-10-15 03:03:34,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-15 03:03:34,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:34,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:34,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:03:34,871 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:34,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:34,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1082596350, now seen corresponding path program 1 times [2020-10-15 03:03:34,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:34,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010128552] [2020-10-15 03:03:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:39,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-15 03:03:39,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:03:39,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:03:39,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:39,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:39,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:39,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:39,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 03:03:39,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:40,453 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:40,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:40,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:03:40,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:40,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:40,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010128552] [2020-10-15 03:03:40,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:40,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:40,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118926459] [2020-10-15 03:03:40,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:40,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:40,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:40,595 INFO L87 Difference]: Start difference. First operand 32491 states and 48613 transitions. Second operand 5 states. [2020-10-15 03:03:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:51,699 INFO L93 Difference]: Finished difference Result 95100 states and 141930 transitions. [2020-10-15 03:03:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:51,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-15 03:03:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:51,819 INFO L225 Difference]: With dead ends: 95100 [2020-10-15 03:03:51,819 INFO L226 Difference]: Without dead ends: 63642 [2020-10-15 03:03:51,881 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 03:03:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63642 states. [2020-10-15 03:03:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63642 to 63640. [2020-10-15 03:03:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63640 states. [2020-10-15 03:03:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63640 states to 63640 states and 94528 transitions. [2020-10-15 03:03:56,260 INFO L78 Accepts]: Start accepts. Automaton has 63640 states and 94528 transitions. Word has length 312 [2020-10-15 03:03:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:56,260 INFO L479 AbstractCegarLoop]: Abstraction has 63640 states and 94528 transitions. [2020-10-15 03:03:56,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:56,261 INFO L276 IsEmpty]: Start isEmpty. Operand 63640 states and 94528 transitions. [2020-10-15 03:03:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-15 03:03:56,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:56,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:56,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:03:56,319 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1753531048, now seen corresponding path program 1 times [2020-10-15 03:03:56,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:56,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022351672] [2020-10-15 03:03:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 03:04:01,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:04:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 03:04:01,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:01,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:04:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:01,929 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:04:01,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:01,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:01,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:04:01,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:01,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:01,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:02,047 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 03:04:02,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022351672] [2020-10-15 03:04:02,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:02,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:02,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148606154] [2020-10-15 03:04:02,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:02,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:02,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:02,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:02,054 INFO L87 Difference]: Start difference. First operand 63640 states and 94528 transitions. Second operand 5 states. [2020-10-15 03:04:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:18,162 INFO L93 Difference]: Finished difference Result 188510 states and 279697 transitions. [2020-10-15 03:04:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:18,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-15 03:04:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:18,579 INFO L225 Difference]: With dead ends: 188510 [2020-10-15 03:04:18,582 INFO L226 Difference]: Without dead ends: 124919 [2020-10-15 03:04:18,758 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 03:04:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124919 states. [2020-10-15 03:04:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124919 to 124917. [2020-10-15 03:04:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124917 states. [2020-10-15 03:04:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124917 states to 124917 states and 184157 transitions. [2020-10-15 03:04:30,474 INFO L78 Accepts]: Start accepts. Automaton has 124917 states and 184157 transitions. Word has length 314 [2020-10-15 03:04:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:30,474 INFO L479 AbstractCegarLoop]: Abstraction has 124917 states and 184157 transitions. [2020-10-15 03:04:30,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 124917 states and 184157 transitions. [2020-10-15 03:04:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-15 03:04:30,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:30,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:30,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:04:30,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:30,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1423836931, now seen corresponding path program 1 times [2020-10-15 03:04:30,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:30,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817564766] [2020-10-15 03:04:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:31,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:36,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:36,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-15 03:04:36,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:04:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6102 [2020-10-15 03:04:36,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:36,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 03:04:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:37,280 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:04:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:37,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:37,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:37,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:04:37,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:37,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:37,460 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 03:04:37,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817564766] [2020-10-15 03:04:37,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:37,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:37,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126306643] [2020-10-15 03:04:37,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:37,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:37,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:37,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:37,463 INFO L87 Difference]: Start difference. First operand 124917 states and 184157 transitions. Second operand 5 states. [2020-10-15 03:05:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:03,748 INFO L93 Difference]: Finished difference Result 364611 states and 535573 transitions. [2020-10-15 03:05:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:03,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-15 03:05:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:04,334 INFO L225 Difference]: With dead ends: 364611 [2020-10-15 03:05:04,334 INFO L226 Difference]: Without dead ends: 244729 [2020-10-15 03:05:04,509 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 03:05:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244729 states. [2020-10-15 03:05:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244729 to 244727. [2020-10-15 03:05:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244727 states. [2020-10-15 03:05:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244727 states to 244727 states and 357847 transitions. [2020-10-15 03:05:31,204 INFO L78 Accepts]: Start accepts. Automaton has 244727 states and 357847 transitions. Word has length 316 [2020-10-15 03:05:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:31,204 INFO L479 AbstractCegarLoop]: Abstraction has 244727 states and 357847 transitions. [2020-10-15 03:05:31,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand 244727 states and 357847 transitions. [2020-10-15 03:05:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-15 03:05:31,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:31,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:31,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:05:31,454 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:31,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1285577622, now seen corresponding path program 1 times [2020-10-15 03:05:31,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:31,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757070446] [2020-10-15 03:05:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:31,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:36,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:36,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-15 03:05:36,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:05:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:05:36,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:36,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-15 03:05:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:37,105 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:05:37,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:37,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:37,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:37,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:05:37,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:37,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:37,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757070446] [2020-10-15 03:05:37,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:37,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:37,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085343261] [2020-10-15 03:05:37,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:37,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:37,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:37,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:37,278 INFO L87 Difference]: Start difference. First operand 244727 states and 357847 transitions. Second operand 5 states.