/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_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:10:38,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:10:38,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:10:38,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:10:38,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:10:38,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:10:38,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:10:38,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:10:38,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:10:38,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:10:38,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:10:38,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:10:38,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:10:38,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:10:38,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:10:38,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:10:38,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:10:38,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:10:38,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:10:38,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:10:38,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:10:38,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:10:38,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:10:38,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:10:38,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:10:38,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:10:38,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:10:38,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:10:38,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:10:38,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:10:38,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:10:38,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:10:38,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:10:38,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:10:38,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:10:38,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:10:38,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:10:38,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:10:38,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:10:38,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:10:38,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:10:38,354 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 04:10:38,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:10:38,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:10:38,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:10:38,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:10:38,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:10:38,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:10:38,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:10:38,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:10:38,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:10:38,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:10:38,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:10:38,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:10:38,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:10:38,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:10:38,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:10:38,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:10:38,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:10:38,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:10:38,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:10:38,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:10:38,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:10:38,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:10:38,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:10:38,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:10:38,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:10:38,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:10:38,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:10:38,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:10:38,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:10:38,391 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 04:10:38,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:10:38,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:10:38,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:10:38,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:10:38,698 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:10:38,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 04:10:38,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb48194ce/af8d9511e8034587a333ad2c3dc7116d/FLAG1126bdaaa [2020-10-15 04:10:39,298 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:10:39,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 04:10:39,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb48194ce/af8d9511e8034587a333ad2c3dc7116d/FLAG1126bdaaa [2020-10-15 04:10:39,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb48194ce/af8d9511e8034587a333ad2c3dc7116d [2020-10-15 04:10:39,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:10:39,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:10:39,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:10:39,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:10:39,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:10:39,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:10:39" (1/1) ... [2020-10-15 04:10:39,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf2a9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:39, skipping insertion in model container [2020-10-15 04:10:39,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:10:39" (1/1) ... [2020-10-15 04:10:39,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:10:39,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:10:40,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:10:40,279 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:10:40,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:10:40,554 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:10:40,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40 WrapperNode [2020-10-15 04:10:40,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:10:40,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:10:40,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:10:40,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:10:40,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (1/1) ... [2020-10-15 04:10:40,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (1/1) ... [2020-10-15 04:10:40,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (1/1) ... [2020-10-15 04:10:40,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (1/1) ... [2020-10-15 04:10:40,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (1/1) ... [2020-10-15 04:10:40,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (1/1) ... [2020-10-15 04:10:40,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (1/1) ... [2020-10-15 04:10:40,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:10:40,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:10:40,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:10:40,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:10:40,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (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 04:10:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:10:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:10:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:10:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:10:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:10:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:10:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:10:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:10:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:10:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:10:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:10:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:10:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:10:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:10:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:10:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:10:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:10:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:10:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:10:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:10:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:10:42,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:10:42,011 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:10:42,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:10:42 BoogieIcfgContainer [2020-10-15 04:10:42,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:10:42,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:10:42,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:10:42,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:10:42,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:10:39" (1/3) ... [2020-10-15 04:10:42,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e5a57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:10:42, skipping insertion in model container [2020-10-15 04:10:42,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:40" (2/3) ... [2020-10-15 04:10:42,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e5a57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:10:42, skipping insertion in model container [2020-10-15 04:10:42,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:10:42" (3/3) ... [2020-10-15 04:10:42,026 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 04:10:42,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:10:42,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:10:42,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:10:42,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:10:42,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:10:42,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:10:42,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:10:42,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:10:42,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:10:42,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:10:42,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:10:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-15 04:10:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 04:10:42,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:42,132 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] [2020-10-15 04:10:42,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1511443852, now seen corresponding path program 1 times [2020-10-15 04:10:42,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:42,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634420019] [2020-10-15 04:10:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:47,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:47,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 04:10:47,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:10:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-15 04:10:47,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:47,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:10:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:10:47,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:10:47,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 04:10:48,464 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:10:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:48,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:48,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:48,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:10:48,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:48,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:48,563 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 04:10:48,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634420019] [2020-10-15 04:10:48,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:48,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:10:48,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130340282] [2020-10-15 04:10:48,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:10:48,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:48,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:10:48,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:48,596 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-10-15 04:10:49,130 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-10-15 04:10:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:51,406 INFO L93 Difference]: Finished difference Result 635 states and 1098 transitions. [2020-10-15 04:10:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:51,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 04:10:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:51,436 INFO L225 Difference]: With dead ends: 635 [2020-10-15 04:10:51,436 INFO L226 Difference]: Without dead ends: 477 [2020-10-15 04:10:51,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-15 04:10:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 475. [2020-10-15 04:10:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-15 04:10:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 783 transitions. [2020-10-15 04:10:51,539 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 783 transitions. Word has length 122 [2020-10-15 04:10:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:51,540 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 783 transitions. [2020-10-15 04:10:51,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:10:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 783 transitions. [2020-10-15 04:10:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 04:10:51,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:51,550 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 04:10:51,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:10:51,551 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:51,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1640549477, now seen corresponding path program 1 times [2020-10-15 04:10:51,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:51,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046229910] [2020-10-15 04:10:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:56,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:56,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:10:56,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:10:56,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 04:10:56,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:56,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 04:10:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:57,215 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:10:57,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:57,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:57,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:57,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:10:57,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:57,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:57,296 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 04:10:57,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046229910] [2020-10-15 04:10:57,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:57,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:57,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922029980] [2020-10-15 04:10:57,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:57,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:57,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:57,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:57,300 INFO L87 Difference]: Start difference. First operand 475 states and 783 transitions. Second operand 5 states. [2020-10-15 04:10:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:59,405 INFO L93 Difference]: Finished difference Result 1385 states and 2286 transitions. [2020-10-15 04:10:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:59,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 04:10:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:59,438 INFO L225 Difference]: With dead ends: 1385 [2020-10-15 04:10:59,438 INFO L226 Difference]: Without dead ends: 925 [2020-10-15 04:10:59,442 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 04:10:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-10-15 04:10:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 923. [2020-10-15 04:10:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-10-15 04:10:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1515 transitions. [2020-10-15 04:10:59,506 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1515 transitions. Word has length 125 [2020-10-15 04:10:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:59,506 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1515 transitions. [2020-10-15 04:10:59,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1515 transitions. [2020-10-15 04:10:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:10:59,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:59,510 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 04:10:59,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:10:59,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:59,511 INFO L82 PathProgramCache]: Analyzing trace with hash -624662220, now seen corresponding path program 1 times [2020-10-15 04:10:59,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:59,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281232418] [2020-10-15 04:10:59,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:59,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:59,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:04,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:04,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:11:04,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:11:04,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:11:04,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:04,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:11:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:05,169 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:11:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:05,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:05,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:11:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:05,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:05,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281232418] [2020-10-15 04:11:05,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:05,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:05,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578713995] [2020-10-15 04:11:05,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:05,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:05,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:05,261 INFO L87 Difference]: Start difference. First operand 923 states and 1515 transitions. Second operand 5 states. [2020-10-15 04:11:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:08,022 INFO L93 Difference]: Finished difference Result 2617 states and 4284 transitions. [2020-10-15 04:11:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:08,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 04:11:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:08,036 INFO L225 Difference]: With dead ends: 2617 [2020-10-15 04:11:08,037 INFO L226 Difference]: Without dead ends: 1775 [2020-10-15 04:11:08,039 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 04:11:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-10-15 04:11:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1773. [2020-10-15 04:11:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-10-15 04:11:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2898 transitions. [2020-10-15 04:11:08,161 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2898 transitions. Word has length 126 [2020-10-15 04:11:08,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:08,162 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2898 transitions. [2020-10-15 04:11:08,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:08,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2898 transitions. [2020-10-15 04:11:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:11:08,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:08,167 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 04:11:08,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:11:08,171 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:08,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1795176101, now seen corresponding path program 1 times [2020-10-15 04:11:08,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:08,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917895871] [2020-10-15 04:11:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:08,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:13,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:13,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:11:13,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:11:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 04:11:13,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:13,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 04:11:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:13,870 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:11:13,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:13,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:13,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:13,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:13,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 04:11:13,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:13,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:14,012 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 04:11:14,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917895871] [2020-10-15 04:11:14,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:14,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:14,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195461852] [2020-10-15 04:11:14,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:14,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:14,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:14,016 INFO L87 Difference]: Start difference. First operand 1773 states and 2898 transitions. Second operand 5 states. [2020-10-15 04:11:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:16,942 INFO L93 Difference]: Finished difference Result 5170 states and 8442 transitions. [2020-10-15 04:11:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:16,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 04:11:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:16,964 INFO L225 Difference]: With dead ends: 5170 [2020-10-15 04:11:16,965 INFO L226 Difference]: Without dead ends: 3482 [2020-10-15 04:11:16,970 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 04:11:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2020-10-15 04:11:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3480. [2020-10-15 04:11:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3480 states. [2020-10-15 04:11:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 5659 transitions. [2020-10-15 04:11:17,214 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 5659 transitions. Word has length 126 [2020-10-15 04:11:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:17,214 INFO L479 AbstractCegarLoop]: Abstraction has 3480 states and 5659 transitions. [2020-10-15 04:11:17,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 5659 transitions. [2020-10-15 04:11:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:11:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:17,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:17,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:11:17,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:17,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:17,230 INFO L82 PathProgramCache]: Analyzing trace with hash 385099479, now seen corresponding path program 1 times [2020-10-15 04:11:17,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:17,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301301816] [2020-10-15 04:11:17,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:22,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:11:22,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:11:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:11:22,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:22,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 04:11:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:22,700 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:11:22,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:22,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:22,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:11:22,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:22,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:22,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:22,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301301816] [2020-10-15 04:11:22,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:22,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:22,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056909434] [2020-10-15 04:11:22,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:22,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:22,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:22,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:22,781 INFO L87 Difference]: Start difference. First operand 3480 states and 5659 transitions. Second operand 5 states. [2020-10-15 04:11:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:24,984 INFO L93 Difference]: Finished difference Result 10112 states and 16415 transitions. [2020-10-15 04:11:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:24,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 04:11:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:25,022 INFO L225 Difference]: With dead ends: 10112 [2020-10-15 04:11:25,023 INFO L226 Difference]: Without dead ends: 6762 [2020-10-15 04:11:25,033 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 04:11:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2020-10-15 04:11:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6760. [2020-10-15 04:11:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6760 states. [2020-10-15 04:11:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 10913 transitions. [2020-10-15 04:11:25,604 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 10913 transitions. Word has length 127 [2020-10-15 04:11:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:25,605 INFO L479 AbstractCegarLoop]: Abstraction has 6760 states and 10913 transitions. [2020-10-15 04:11:25,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 10913 transitions. [2020-10-15 04:11:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:11:25,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:25,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:25,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:11:25,623 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:25,623 INFO L82 PathProgramCache]: Analyzing trace with hash -143453911, now seen corresponding path program 1 times [2020-10-15 04:11:25,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:25,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364301729] [2020-10-15 04:11:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:30,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:30,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 04:11:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:31,211 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:11:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:31,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:31,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:11:31,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:31,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:31,274 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 04:11:31,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364301729] [2020-10-15 04:11:31,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:31,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:31,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084437106] [2020-10-15 04:11:31,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:31,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:31,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:31,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:31,276 INFO L87 Difference]: Start difference. First operand 6760 states and 10913 transitions. Second operand 5 states. [2020-10-15 04:11:33,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:33,645 INFO L93 Difference]: Finished difference Result 20025 states and 32313 transitions. [2020-10-15 04:11:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:33,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 04:11:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:33,698 INFO L225 Difference]: With dead ends: 20025 [2020-10-15 04:11:33,699 INFO L226 Difference]: Without dead ends: 13283 [2020-10-15 04:11:33,717 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 04:11:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13283 states. [2020-10-15 04:11:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13283 to 13281. [2020-10-15 04:11:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13281 states. [2020-10-15 04:11:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13281 states to 13281 states and 21307 transitions. [2020-10-15 04:11:34,591 INFO L78 Accepts]: Start accepts. Automaton has 13281 states and 21307 transitions. Word has length 127 [2020-10-15 04:11:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:34,592 INFO L479 AbstractCegarLoop]: Abstraction has 13281 states and 21307 transitions. [2020-10-15 04:11:34,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 13281 states and 21307 transitions. [2020-10-15 04:11:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:11:34,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:34,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:34,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:11:34,618 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:34,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1443775694, now seen corresponding path program 1 times [2020-10-15 04:11:34,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:34,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764574542] [2020-10-15 04:11:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:39,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:39,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:11:39,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:11:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:11:39,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:39,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:39,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:11:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:40,335 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:11:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:40,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:40,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:40,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:40,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:40,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:11:40,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:40,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:40,455 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 04:11:40,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764574542] [2020-10-15 04:11:40,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:40,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:40,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576781673] [2020-10-15 04:11:40,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:40,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:40,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:40,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:40,461 INFO L87 Difference]: Start difference. First operand 13281 states and 21307 transitions. Second operand 5 states. [2020-10-15 04:11:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:43,870 INFO L93 Difference]: Finished difference Result 37869 states and 60605 transitions. [2020-10-15 04:11:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:43,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-15 04:11:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:43,941 INFO L225 Difference]: With dead ends: 37869 [2020-10-15 04:11:43,941 INFO L226 Difference]: Without dead ends: 25771 [2020-10-15 04:11:43,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:44,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25771 states. [2020-10-15 04:11:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25771 to 25769. [2020-10-15 04:11:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25769 states. [2020-10-15 04:11:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25769 states to 25769 states and 41131 transitions. [2020-10-15 04:11:46,332 INFO L78 Accepts]: Start accepts. Automaton has 25769 states and 41131 transitions. Word has length 128 [2020-10-15 04:11:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:46,332 INFO L479 AbstractCegarLoop]: Abstraction has 25769 states and 41131 transitions. [2020-10-15 04:11:46,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 25769 states and 41131 transitions. [2020-10-15 04:11:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:11:46,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:46,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:46,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:11:46,375 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2043048, now seen corresponding path program 1 times [2020-10-15 04:11:46,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:46,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106919533] [2020-10-15 04:11:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:49,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:49,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:11:49,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:11:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3478 [2020-10-15 04:11:49,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:49,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:11:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:11:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 04:11:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:50,313 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:11:50,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:50,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:50,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:50,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:11:50,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:50,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:50,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:50,350 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 04:11:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106919533] [2020-10-15 04:11:50,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:50,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:11:50,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552263954] [2020-10-15 04:11:50,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:11:50,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:50,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:11:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:50,352 INFO L87 Difference]: Start difference. First operand 25769 states and 41131 transitions. Second operand 4 states. [2020-10-15 04:11:50,729 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-10-15 04:11:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:54,229 INFO L93 Difference]: Finished difference Result 55469 states and 89901 transitions. [2020-10-15 04:11:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:54,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 04:11:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:54,314 INFO L225 Difference]: With dead ends: 55469 [2020-10-15 04:11:54,314 INFO L226 Difference]: Without dead ends: 40011 [2020-10-15 04:11:54,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40011 states. [2020-10-15 04:11:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40011 to 40009. [2020-10-15 04:11:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40009 states. [2020-10-15 04:11:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40009 states to 40009 states and 64331 transitions. [2020-10-15 04:11:56,613 INFO L78 Accepts]: Start accepts. Automaton has 40009 states and 64331 transitions. Word has length 128 [2020-10-15 04:11:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:56,614 INFO L479 AbstractCegarLoop]: Abstraction has 40009 states and 64331 transitions. [2020-10-15 04:11:56,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 40009 states and 64331 transitions. [2020-10-15 04:11:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 04:11:56,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:56,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:56,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:11:56,648 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:56,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1057532681, now seen corresponding path program 1 times [2020-10-15 04:11:56,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:56,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164367636] [2020-10-15 04:11:56,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:01,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:01,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 04:12:01,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:02,086 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:12:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:02,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:02,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:02,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:02,148 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 04:12:02,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164367636] [2020-10-15 04:12:02,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:02,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:02,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259983913] [2020-10-15 04:12:02,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:02,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:02,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:02,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:02,150 INFO L87 Difference]: Start difference. First operand 40009 states and 64331 transitions. Second operand 5 states. [2020-10-15 04:12:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:09,034 INFO L93 Difference]: Finished difference Result 116995 states and 187827 transitions. [2020-10-15 04:12:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:09,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-15 04:12:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:09,176 INFO L225 Difference]: With dead ends: 116995 [2020-10-15 04:12:09,176 INFO L226 Difference]: Without dead ends: 77793 [2020-10-15 04:12:09,238 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 04:12:09,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77793 states. [2020-10-15 04:12:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77793 to 77791. [2020-10-15 04:12:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77791 states. [2020-10-15 04:12:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77791 states to 77791 states and 124033 transitions. [2020-10-15 04:12:13,532 INFO L78 Accepts]: Start accepts. Automaton has 77791 states and 124033 transitions. Word has length 132 [2020-10-15 04:12:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:13,532 INFO L479 AbstractCegarLoop]: Abstraction has 77791 states and 124033 transitions. [2020-10-15 04:12:13,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 77791 states and 124033 transitions. [2020-10-15 04:12:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:12:13,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:13,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:13,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:12:13,574 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:13,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1088702371, now seen corresponding path program 1 times [2020-10-15 04:12:13,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:13,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865855161] [2020-10-15 04:12:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:13,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:19,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:19,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 04:12:19,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:12:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6029 [2020-10-15 04:12:19,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:19,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 04:12:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:20,068 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:12:20,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:20,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:20,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:20,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:12:20,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:20,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:20,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:20,137 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 04:12:20,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865855161] [2020-10-15 04:12:20,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:20,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:20,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231042308] [2020-10-15 04:12:20,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:20,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:20,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:20,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:20,139 INFO L87 Difference]: Start difference. First operand 77791 states and 124033 transitions. Second operand 5 states. [2020-10-15 04:12:30,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:30,154 INFO L93 Difference]: Finished difference Result 229477 states and 365723 transitions. [2020-10-15 04:12:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:30,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-15 04:12:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:30,365 INFO L225 Difference]: With dead ends: 229477 [2020-10-15 04:12:30,365 INFO L226 Difference]: Without dead ends: 151895 [2020-10-15 04:12:30,460 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 04:12:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151895 states. [2020-10-15 04:12:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151895 to 151893. [2020-10-15 04:12:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151893 states. [2020-10-15 04:12:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151893 states to 151893 states and 240771 transitions. [2020-10-15 04:12:41,274 INFO L78 Accepts]: Start accepts. Automaton has 151893 states and 240771 transitions. Word has length 133 [2020-10-15 04:12:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:41,274 INFO L479 AbstractCegarLoop]: Abstraction has 151893 states and 240771 transitions. [2020-10-15 04:12:41,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 151893 states and 240771 transitions. [2020-10-15 04:12:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:12:41,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:41,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:41,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:12:41,377 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:41,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1617908165, now seen corresponding path program 1 times [2020-10-15 04:12:41,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:41,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341460586] [2020-10-15 04:12:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:43,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:46,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:46,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 04:12:46,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:12:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 04:12:46,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:46,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-15 04:12:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:46,909 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:12:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:46,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:46,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:46,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:12:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:46,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:46,997 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 04:12:46,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341460586] [2020-10-15 04:12:46,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:46,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:46,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320942982] [2020-10-15 04:12:46,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:46,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:47,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:47,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:47,000 INFO L87 Difference]: Start difference. First operand 151893 states and 240771 transitions. Second operand 5 states. [2020-10-15 04:13:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:11,768 INFO L93 Difference]: Finished difference Result 441361 states and 698619 transitions. [2020-10-15 04:13:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:11,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-15 04:13:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:12,265 INFO L225 Difference]: With dead ends: 441361 [2020-10-15 04:13:12,265 INFO L226 Difference]: Without dead ends: 296335 [2020-10-15 04:13:12,399 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 04:13:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296335 states. [2020-10-15 04:13:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296335 to 296333. [2020-10-15 04:13:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296333 states. [2020-10-15 04:13:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296333 states to 296333 states and 466361 transitions. [2020-10-15 04:13:37,003 INFO L78 Accepts]: Start accepts. Automaton has 296333 states and 466361 transitions. Word has length 133 [2020-10-15 04:13:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:37,003 INFO L479 AbstractCegarLoop]: Abstraction has 296333 states and 466361 transitions. [2020-10-15 04:13:37,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 296333 states and 466361 transitions. [2020-10-15 04:13:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 04:13:37,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:37,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:37,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:13:37,198 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1534006221, now seen corresponding path program 1 times [2020-10-15 04:13:37,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:37,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462359297] [2020-10-15 04:13:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:45,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:45,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 04:13:45,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:13:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8123 [2020-10-15 04:13:45,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:45,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 04:13:45,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:45,828 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:13:45,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:45,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:13:45,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:45,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:45,896 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 04:13:45,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462359297] [2020-10-15 04:13:45,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:45,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:45,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472471217] [2020-10-15 04:13:45,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:45,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:45,898 INFO L87 Difference]: Start difference. First operand 296333 states and 466361 transitions. Second operand 5 states.