/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.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:03:35,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:03:35,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:03:35,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:03:35,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:03:35,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:03:35,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:03:35,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:03:35,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:03:35,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:03:35,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:03:35,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:03:35,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:03:35,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:03:35,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:03:35,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:03:35,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:03:35,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:03:35,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:03:35,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:03:35,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:03:35,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:03:35,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:03:35,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:03:35,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:03:35,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:03:35,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:03:35,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:03:35,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:03:35,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:03:35,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:03:35,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:03:35,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:03:35,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:03:35,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:03:35,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:03:35,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:03:35,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:03:35,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:03:35,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:03:35,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:03:35,215 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 03:03:35,262 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:03:35,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:03:35,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:03:35,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:03:35,264 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:03:35,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:03:35,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:03:35,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:03:35,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:03:35,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:03:35,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:03:35,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:03:35,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:03:35,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:03:35,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:03:35,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:03:35,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:03:35,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:03:35,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:03:35,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:03:35,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:03:35,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:03:35,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:03:35,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:03:35,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:03:35,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:03:35,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:03:35,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:03:35,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:03:35,271 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 03:03:35,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:03:35,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:03:35,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:03:35,579 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:03:35,580 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:03:35,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:03:35,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e15a010/bd1b2a09196b49198d1d62b6158522b4/FLAG7fe6733ab [2020-10-15 03:03:36,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:03:36,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:03:36,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e15a010/bd1b2a09196b49198d1d62b6158522b4/FLAG7fe6733ab [2020-10-15 03:03:36,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e15a010/bd1b2a09196b49198d1d62b6158522b4 [2020-10-15 03:03:36,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:03:36,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:03:36,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:03:36,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:03:36,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:03:36,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:36" (1/1) ... [2020-10-15 03:03:36,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326565d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:36, skipping insertion in model container [2020-10-15 03:03:36,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:36" (1/1) ... [2020-10-15 03:03:36,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:03:36,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:03:37,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:03:37,101 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:03:37,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:03:37,392 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:03:37,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37 WrapperNode [2020-10-15 03:03:37,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:03:37,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:03:37,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:03:37,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:03:37,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (1/1) ... [2020-10-15 03:03:37,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:03:37,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:03:37,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:03:37,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:03:37,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (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 03:03:37,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:03:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:03:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:03:37,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:03:37,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:03:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:03:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:03:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:03:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:03:37,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:03:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:03:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:03:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:03:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:03:37,614 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:03:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:03:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:03:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:03:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:03:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:03:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:03:39,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:03:39,035 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:03:39,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:39 BoogieIcfgContainer [2020-10-15 03:03:39,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:03:39,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:03:39,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:03:39,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:03:39,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:03:36" (1/3) ... [2020-10-15 03:03:39,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689a4be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:39, skipping insertion in model container [2020-10-15 03:03:39,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:37" (2/3) ... [2020-10-15 03:03:39,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689a4be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:39, skipping insertion in model container [2020-10-15 03:03:39,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:39" (3/3) ... [2020-10-15 03:03:39,059 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 03:03:39,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:03:39,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:03:39,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:03:39,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:03:39,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:03:39,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:03:39,125 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:03:39,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:03:39,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:03:39,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:03:39,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:03:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-15 03:03:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:03:39,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:39,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:39,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:39,179 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-15 03:03:39,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:39,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704792846] [2020-10-15 03:03:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:40,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:44,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:44,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:03:44,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:03:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:03:44,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:44,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 03:03:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:03:44,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:03:45,392 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:03:45,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:45,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:45,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:03:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:45,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:03:45,476 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 03:03:45,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704792846] [2020-10-15 03:03:45,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:45,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:03:45,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063984607] [2020-10-15 03:03:45,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:03:45,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:45,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:03:45,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:45,504 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 4 states. [2020-10-15 03:03:45,957 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:03:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:47,942 INFO L93 Difference]: Finished difference Result 577 states and 1002 transitions. [2020-10-15 03:03:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:47,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-15 03:03:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:47,963 INFO L225 Difference]: With dead ends: 577 [2020-10-15 03:03:47,963 INFO L226 Difference]: Without dead ends: 438 [2020-10-15 03:03:47,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:47,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-15 03:03:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2020-10-15 03:03:48,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-15 03:03:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 726 transitions. [2020-10-15 03:03:48,053 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 726 transitions. Word has length 115 [2020-10-15 03:03:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:48,054 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 726 transitions. [2020-10-15 03:03:48,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:03:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 726 transitions. [2020-10-15 03:03:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:03:48,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:48,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:48,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:03:48,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:48,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:48,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1947289558, now seen corresponding path program 1 times [2020-10-15 03:03:48,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:48,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123340336] [2020-10-15 03:03:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:50,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:03:53,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:03:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:03:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:53,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:53,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:03:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:53,643 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:03:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:53,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:53,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:03:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:53,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:53,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123340336] [2020-10-15 03:03:53,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:53,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:53,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099135747] [2020-10-15 03:03:53,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:53,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:53,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:53,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:53,735 INFO L87 Difference]: Start difference. First operand 436 states and 726 transitions. Second operand 5 states. [2020-10-15 03:03:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:56,144 INFO L93 Difference]: Finished difference Result 1248 states and 2078 transitions. [2020-10-15 03:03:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:56,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:03:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:56,157 INFO L225 Difference]: With dead ends: 1248 [2020-10-15 03:03:56,158 INFO L226 Difference]: Without dead ends: 839 [2020-10-15 03:03:56,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:03:56,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2020-10-15 03:03:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2020-10-15 03:03:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-10-15 03:03:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1386 transitions. [2020-10-15 03:03:56,262 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1386 transitions. Word has length 118 [2020-10-15 03:03:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:56,262 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1386 transitions. [2020-10-15 03:03:56,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1386 transitions. [2020-10-15 03:03:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:03:56,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:56,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:56,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:03:56,276 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:56,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:56,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1045954500, now seen corresponding path program 1 times [2020-10-15 03:03:56,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:56,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377717022] [2020-10-15 03:03:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:56,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:01,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:04:01,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:04:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:04:01,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:01,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:01,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:04:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:04:02,017 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:02,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:02,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:02,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:04:02,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:02,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:04:02,161 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 03:04:02,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377717022] [2020-10-15 03:04:02,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:02,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:02,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455042477] [2020-10-15 03:04:02,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:02,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:02,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:02,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:02,168 INFO L87 Difference]: Start difference. First operand 837 states and 1386 transitions. Second operand 5 states. [2020-10-15 03:04:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:05,004 INFO L93 Difference]: Finished difference Result 2387 states and 3947 transitions. [2020-10-15 03:04:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:05,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-15 03:04:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:05,015 INFO L225 Difference]: With dead ends: 2387 [2020-10-15 03:04:05,016 INFO L226 Difference]: Without dead ends: 1633 [2020-10-15 03:04:05,018 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 03:04:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-10-15 03:04:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2020-10-15 03:04:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2020-10-15 03:04:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2686 transitions. [2020-10-15 03:04:05,110 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2686 transitions. Word has length 118 [2020-10-15 03:04:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:05,110 INFO L479 AbstractCegarLoop]: Abstraction has 1631 states and 2686 transitions. [2020-10-15 03:04:05,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2686 transitions. [2020-10-15 03:04:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:04:05,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:05,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:05,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:04:05,116 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:05,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:05,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2107319254, now seen corresponding path program 1 times [2020-10-15 03:04:05,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:05,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406801791] [2020-10-15 03:04:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:05,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:05,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:10,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:10,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:04:10,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:04:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:04:10,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:10,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 03:04:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:10,790 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:10,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:04:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:10,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:10,915 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 03:04:10,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406801791] [2020-10-15 03:04:10,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:10,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:10,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311736869] [2020-10-15 03:04:10,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:10,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:10,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:10,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:10,919 INFO L87 Difference]: Start difference. First operand 1631 states and 2686 transitions. Second operand 5 states. [2020-10-15 03:04:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:13,186 INFO L93 Difference]: Finished difference Result 4788 states and 7888 transitions. [2020-10-15 03:04:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:13,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:04:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:13,205 INFO L225 Difference]: With dead ends: 4788 [2020-10-15 03:04:13,206 INFO L226 Difference]: Without dead ends: 3190 [2020-10-15 03:04:13,210 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 03:04:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-15 03:04:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3188. [2020-10-15 03:04:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3188 states. [2020-10-15 03:04:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5225 transitions. [2020-10-15 03:04:13,393 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5225 transitions. Word has length 119 [2020-10-15 03:04:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:13,393 INFO L479 AbstractCegarLoop]: Abstraction has 3188 states and 5225 transitions. [2020-10-15 03:04:13,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5225 transitions. [2020-10-15 03:04:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:04:13,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:13,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:13,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:04:13,402 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1625721349, now seen corresponding path program 1 times [2020-10-15 03:04:13,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:13,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479473988] [2020-10-15 03:04:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:18,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:18,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:04:18,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:04:18,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:04:18,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:18,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:04:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:18,940 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:04:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:18,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:19,015 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 03:04:19,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479473988] [2020-10-15 03:04:19,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:19,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:19,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393725756] [2020-10-15 03:04:19,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:19,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:19,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:19,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:19,018 INFO L87 Difference]: Start difference. First operand 3188 states and 5225 transitions. Second operand 5 states. [2020-10-15 03:04:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:21,366 INFO L93 Difference]: Finished difference Result 9246 states and 15133 transitions. [2020-10-15 03:04:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:21,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:04:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:21,401 INFO L225 Difference]: With dead ends: 9246 [2020-10-15 03:04:21,402 INFO L226 Difference]: Without dead ends: 6180 [2020-10-15 03:04:21,419 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 03:04:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2020-10-15 03:04:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 6178. [2020-10-15 03:04:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6178 states. [2020-10-15 03:04:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 10043 transitions. [2020-10-15 03:04:21,796 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 10043 transitions. Word has length 120 [2020-10-15 03:04:21,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:21,797 INFO L479 AbstractCegarLoop]: Abstraction has 6178 states and 10043 transitions. [2020-10-15 03:04:21,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 10043 transitions. [2020-10-15 03:04:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:04:21,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:21,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:21,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:04:21,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1387700954, now seen corresponding path program 1 times [2020-10-15 03:04:21,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:21,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464549412] [2020-10-15 03:04:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:26,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:04:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:04:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:04:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:26,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:04:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:27,519 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:27,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:27,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:27,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:04:27,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:27,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:27,659 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 03:04:27,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464549412] [2020-10-15 03:04:27,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:27,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:27,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252379100] [2020-10-15 03:04:27,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:27,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:27,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:27,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:27,668 INFO L87 Difference]: Start difference. First operand 6178 states and 10043 transitions. Second operand 5 states. [2020-10-15 03:04:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:30,895 INFO L93 Difference]: Finished difference Result 17487 states and 28400 transitions. [2020-10-15 03:04:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:30,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:04:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:31,072 INFO L225 Difference]: With dead ends: 17487 [2020-10-15 03:04:31,073 INFO L226 Difference]: Without dead ends: 12029 [2020-10-15 03:04:31,086 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 03:04:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12029 states. [2020-10-15 03:04:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12029 to 12027. [2020-10-15 03:04:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12027 states. [2020-10-15 03:04:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12027 states to 12027 states and 19474 transitions. [2020-10-15 03:04:31,835 INFO L78 Accepts]: Start accepts. Automaton has 12027 states and 19474 transitions. Word has length 120 [2020-10-15 03:04:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:31,836 INFO L479 AbstractCegarLoop]: Abstraction has 12027 states and 19474 transitions. [2020-10-15 03:04:31,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 12027 states and 19474 transitions. [2020-10-15 03:04:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:04:31,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:31,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:31,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:04:31,862 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash 330401155, now seen corresponding path program 1 times [2020-10-15 03:04:31,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:31,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834503204] [2020-10-15 03:04:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:32,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:36,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:36,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:04:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:04:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:04:36,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:36,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:04:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:04:36,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:04:36,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:37,387 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:37,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 03:04:37,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:37,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:04:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:04:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:37,498 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 03:04:37,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834503204] [2020-10-15 03:04:37,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:37,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:04:37,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346744464] [2020-10-15 03:04:37,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:04:37,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:37,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:04:37,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:04:37,505 INFO L87 Difference]: Start difference. First operand 12027 states and 19474 transitions. Second operand 8 states. [2020-10-15 03:04:38,154 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-15 03:04:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:42,057 INFO L93 Difference]: Finished difference Result 25903 states and 42628 transitions. [2020-10-15 03:04:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:04:42,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-15 03:04:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:42,112 INFO L225 Difference]: With dead ends: 25903 [2020-10-15 03:04:42,113 INFO L226 Difference]: Without dead ends: 18941 [2020-10-15 03:04:42,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:04:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18941 states. [2020-10-15 03:04:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18941 to 12987. [2020-10-15 03:04:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12987 states. [2020-10-15 03:04:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12987 states to 12987 states and 20946 transitions. [2020-10-15 03:04:43,099 INFO L78 Accepts]: Start accepts. Automaton has 12987 states and 20946 transitions. Word has length 121 [2020-10-15 03:04:43,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:43,100 INFO L479 AbstractCegarLoop]: Abstraction has 12987 states and 20946 transitions. [2020-10-15 03:04:43,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:04:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 12987 states and 20946 transitions. [2020-10-15 03:04:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:04:43,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:43,134 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] [2020-10-15 03:04:43,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:04:43,135 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:43,135 INFO L82 PathProgramCache]: Analyzing trace with hash -431458831, now seen corresponding path program 1 times [2020-10-15 03:04:43,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:43,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205467729] [2020-10-15 03:04:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:04:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:04:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3898 [2020-10-15 03:04:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:47,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:04:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 03:04:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:04:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:47,472 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:47,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:47,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:47,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:04:47,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:47,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:47,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:47,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:47,531 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 03:04:47,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205467729] [2020-10-15 03:04:47,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:47,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:04:47,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140177267] [2020-10-15 03:04:47,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:04:47,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:47,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:04:47,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:47,540 INFO L87 Difference]: Start difference. First operand 12987 states and 20946 transitions. Second operand 4 states. [2020-10-15 03:04:47,903 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-15 03:04:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:50,653 INFO L93 Difference]: Finished difference Result 26367 states and 43156 transitions. [2020-10-15 03:04:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:50,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-15 03:04:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:50,704 INFO L225 Difference]: With dead ends: 26367 [2020-10-15 03:04:50,704 INFO L226 Difference]: Without dead ends: 19405 [2020-10-15 03:04:50,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19405 states. [2020-10-15 03:04:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19405 to 19403. [2020-10-15 03:04:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19403 states. [2020-10-15 03:04:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19403 states to 19403 states and 31490 transitions. [2020-10-15 03:04:52,187 INFO L78 Accepts]: Start accepts. Automaton has 19403 states and 31490 transitions. Word has length 121 [2020-10-15 03:04:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:52,187 INFO L479 AbstractCegarLoop]: Abstraction has 19403 states and 31490 transitions. [2020-10-15 03:04:52,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:04:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 19403 states and 31490 transitions. [2020-10-15 03:04:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:04:52,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:52,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:52,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:04:52,207 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:52,208 INFO L82 PathProgramCache]: Analyzing trace with hash -675223469, now seen corresponding path program 1 times [2020-10-15 03:04:52,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:52,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458456461] [2020-10-15 03:04:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:57,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:04:57,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:04:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:04:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:57,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:04:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-15 03:04:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-15 03:04:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:57,904 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:04:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:57,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:57,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:04:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:57,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:57,973 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 03:04:57,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458456461] [2020-10-15 03:04:57,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:57,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:04:57,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749331197] [2020-10-15 03:04:57,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:04:57,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:57,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:04:57,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:57,975 INFO L87 Difference]: Start difference. First operand 19403 states and 31490 transitions. Second operand 4 states. [2020-10-15 03:05:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:03,644 INFO L93 Difference]: Finished difference Result 55779 states and 90480 transitions. [2020-10-15 03:05:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:05:03,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-15 03:05:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:03,724 INFO L225 Difference]: With dead ends: 55779 [2020-10-15 03:05:03,725 INFO L226 Difference]: Without dead ends: 37489 [2020-10-15 03:05:03,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:05:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37489 states. [2020-10-15 03:05:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37489 to 37487. [2020-10-15 03:05:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37487 states. [2020-10-15 03:05:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37487 states to 37487 states and 60566 transitions. [2020-10-15 03:05:07,321 INFO L78 Accepts]: Start accepts. Automaton has 37487 states and 60566 transitions. Word has length 125 [2020-10-15 03:05:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:07,321 INFO L479 AbstractCegarLoop]: Abstraction has 37487 states and 60566 transitions. [2020-10-15 03:05:07,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:05:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 37487 states and 60566 transitions. [2020-10-15 03:05:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:05:07,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:07,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:07,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:05:07,355 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:07,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash 675142574, now seen corresponding path program 1 times [2020-10-15 03:05:07,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:07,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283196076] [2020-10-15 03:05:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:08,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:12,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:12,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:05:12,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:05:12,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 03:05:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:12,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 03:05:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:12,894 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:05:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:12,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:12,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:12,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:05:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:12,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:12,959 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 03:05:12,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283196076] [2020-10-15 03:05:12,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:12,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:12,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399971025] [2020-10-15 03:05:12,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:12,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:12,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:12,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:12,967 INFO L87 Difference]: Start difference. First operand 37487 states and 60566 transitions. Second operand 5 states. [2020-10-15 03:05:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:20,653 INFO L93 Difference]: Finished difference Result 108642 states and 175387 transitions. [2020-10-15 03:05:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:20,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:05:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:20,792 INFO L225 Difference]: With dead ends: 108642 [2020-10-15 03:05:20,793 INFO L226 Difference]: Without dead ends: 73610 [2020-10-15 03:05:20,868 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 03:05:20,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73610 states. [2020-10-15 03:05:28,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73610 to 73608. [2020-10-15 03:05:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73608 states. [2020-10-15 03:05:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73608 states to 73608 states and 118462 transitions. [2020-10-15 03:05:28,618 INFO L78 Accepts]: Start accepts. Automaton has 73608 states and 118462 transitions. Word has length 125 [2020-10-15 03:05:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:28,618 INFO L479 AbstractCegarLoop]: Abstraction has 73608 states and 118462 transitions. [2020-10-15 03:05:28,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 73608 states and 118462 transitions. [2020-10-15 03:05:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:05:28,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:28,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:28,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:05:28,683 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:28,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:28,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1067053773, now seen corresponding path program 1 times [2020-10-15 03:05:28,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:28,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093481745] [2020-10-15 03:05:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:28,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:33,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:33,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:05:33,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:05:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:05:33,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:33,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 03:05:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:34,171 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:05:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:34,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:34,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:34,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:05:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:34,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:34,226 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 03:05:34,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093481745] [2020-10-15 03:05:34,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:34,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:34,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219441561] [2020-10-15 03:05:34,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:34,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:34,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:34,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:34,228 INFO L87 Difference]: Start difference. First operand 73608 states and 118462 transitions. Second operand 5 states. [2020-10-15 03:05:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:50,268 INFO L93 Difference]: Finished difference Result 213803 states and 343762 transitions. [2020-10-15 03:05:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:50,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 03:05:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:50,569 INFO L225 Difference]: With dead ends: 213803 [2020-10-15 03:05:50,569 INFO L226 Difference]: Without dead ends: 144381 [2020-10-15 03:05:50,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:05:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144381 states. [2020-10-15 03:06:05,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144381 to 144379. [2020-10-15 03:06:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144379 states. [2020-10-15 03:06:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144379 states to 144379 states and 231052 transitions. [2020-10-15 03:06:06,003 INFO L78 Accepts]: Start accepts. Automaton has 144379 states and 231052 transitions. Word has length 125 [2020-10-15 03:06:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:06,004 INFO L479 AbstractCegarLoop]: Abstraction has 144379 states and 231052 transitions. [2020-10-15 03:06:06,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 144379 states and 231052 transitions. [2020-10-15 03:06:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 03:06:06,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:06,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:06,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:06:06,104 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:06,104 INFO L82 PathProgramCache]: Analyzing trace with hash -683164842, now seen corresponding path program 1 times [2020-10-15 03:06:06,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:06,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493118605] [2020-10-15 03:06:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:06,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:11,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:11,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 03:06:11,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:06:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 03:06:11,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:11,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:06:11,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:11,800 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-15 03:06:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:11,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:11,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:11,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:06:11,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:11,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:11,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:11,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493118605] [2020-10-15 03:06:11,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:11,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:11,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080779180] [2020-10-15 03:06:11,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:11,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:11,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:11,865 INFO L87 Difference]: Start difference. First operand 144379 states and 231052 transitions. Second operand 5 states. [2020-10-15 03:06:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:46,087 INFO L93 Difference]: Finished difference Result 419327 states and 671042 transitions. [2020-10-15 03:06:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:46,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 03:06:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:46,574 INFO L225 Difference]: With dead ends: 419327 [2020-10-15 03:06:46,574 INFO L226 Difference]: Without dead ends: 281501 [2020-10-15 03:06:46,707 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 03:06:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281501 states. [2020-10-15 03:07:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281501 to 281499. [2020-10-15 03:07:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281499 states. [2020-10-15 03:07:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281499 states to 281499 states and 448136 transitions. [2020-10-15 03:07:19,686 INFO L78 Accepts]: Start accepts. Automaton has 281499 states and 448136 transitions. Word has length 126 [2020-10-15 03:07:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:19,687 INFO L479 AbstractCegarLoop]: Abstraction has 281499 states and 448136 transitions. [2020-10-15 03:07:19,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 281499 states and 448136 transitions. [2020-10-15 03:07:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 03:07:19,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:19,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:19,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:07:19,879 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:19,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1105556533, now seen corresponding path program 1 times [2020-10-15 03:07:19,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:19,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203414903] [2020-10-15 03:07:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking...