/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:55:39,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:55:39,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:55:39,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:55:39,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:55:39,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:55:39,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:55:39,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:55:39,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:55:39,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:55:39,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:55:39,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:55:39,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:55:39,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:55:39,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:55:39,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:55:39,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:55:39,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:55:39,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:55:39,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:55:39,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:55:39,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:55:39,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:55:39,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:55:39,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:55:39,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:55:39,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:55:39,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:55:39,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:55:39,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:55:39,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:55:39,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:55:39,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:55:39,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:55:39,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:55:39,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:55:39,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:55:39,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:55:39,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:55:39,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:55:39,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:55:39,882 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 02:55:39,908 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:55:39,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:55:39,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:55:39,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:55:39,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:55:39,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:55:39,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:55:39,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:55:39,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:55:39,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:55:39,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:55:39,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:55:39,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:55:39,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:55:39,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:55:39,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:55:39,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:55:39,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:55:39,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:55:39,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:55:39,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:55:39,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:55:39,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:55:39,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:55:39,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:55:39,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:55:39,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:55:39,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:55:39,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:55:39,915 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 02:55:40,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:55:40,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:55:40,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:55:40,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:55:40,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:55:40,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:55:40,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/669deb393/2322af3509a84783ba064b5f87516b4a/FLAGcd42a5271 [2020-10-15 02:55:40,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:55:40,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:55:40,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/669deb393/2322af3509a84783ba064b5f87516b4a/FLAGcd42a5271 [2020-10-15 02:55:41,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/669deb393/2322af3509a84783ba064b5f87516b4a [2020-10-15 02:55:41,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:55:41,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:55:41,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:41,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:55:41,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:55:41,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:41" (1/1) ... [2020-10-15 02:55:41,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:41, skipping insertion in model container [2020-10-15 02:55:41,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:41" (1/1) ... [2020-10-15 02:55:41,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:55:41,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:55:41,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:41,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:55:41,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:42,007 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:55:42,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42 WrapperNode [2020-10-15 02:55:42,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:42,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:55:42,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:55:42,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:55:42,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (1/1) ... [2020-10-15 02:55:42,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (1/1) ... [2020-10-15 02:55:42,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (1/1) ... [2020-10-15 02:55:42,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (1/1) ... [2020-10-15 02:55:42,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (1/1) ... [2020-10-15 02:55:42,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (1/1) ... [2020-10-15 02:55:42,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (1/1) ... [2020-10-15 02:55:42,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:55:42,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:55:42,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:55:42,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:55:42,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (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 02:55:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:55:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:55:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:55:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:55:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:55:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:55:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:55:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:55:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:55:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:55:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:55:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:55:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:55:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:55:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:55:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:55:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:55:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:55:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:55:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:55:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:55:43,477 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:55:43,478 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:55:43,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:43 BoogieIcfgContainer [2020-10-15 02:55:43,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:55:43,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:55:43,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:55:43,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:55:43,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:55:41" (1/3) ... [2020-10-15 02:55:43,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41be2b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:43, skipping insertion in model container [2020-10-15 02:55:43,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:42" (2/3) ... [2020-10-15 02:55:43,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41be2b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:43, skipping insertion in model container [2020-10-15 02:55:43,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:43" (3/3) ... [2020-10-15 02:55:43,493 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:55:43,506 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:55:43,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:55:43,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:55:43,562 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:55:43,563 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:55:43,563 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:55:43,563 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:55:43,563 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:55:43,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:55:43,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:55:43,564 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:55:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states. [2020-10-15 02:55:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 02:55:43,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:43,605 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] [2020-10-15 02:55:43,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1025666754, now seen corresponding path program 1 times [2020-10-15 02:55:43,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:43,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096134410] [2020-10-15 02:55:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:44,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:49,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:49,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 02:55:49,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 02:55:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:55:49,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:49,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:55:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-15 02:55:49,612 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:55:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:49,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 02:55:49,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:49,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:49,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:49,711 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 02:55:49,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096134410] [2020-10-15 02:55:49,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:49,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:49,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899872260] [2020-10-15 02:55:49,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:49,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:49,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:49,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:49,749 INFO L87 Difference]: Start difference. First operand 229 states. Second operand 5 states. [2020-10-15 02:55:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:52,167 INFO L93 Difference]: Finished difference Result 638 states and 1117 transitions. [2020-10-15 02:55:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:55:52,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-15 02:55:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:52,187 INFO L225 Difference]: With dead ends: 638 [2020-10-15 02:55:52,187 INFO L226 Difference]: Without dead ends: 430 [2020-10-15 02:55:52,192 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 02:55:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-15 02:55:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-10-15 02:55:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-15 02:55:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 628 transitions. [2020-10-15 02:55:52,284 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 628 transitions. Word has length 99 [2020-10-15 02:55:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:52,285 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 628 transitions. [2020-10-15 02:55:52,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 628 transitions. [2020-10-15 02:55:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 02:55:52,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:52,291 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] [2020-10-15 02:55:52,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:55:52,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2087063056, now seen corresponding path program 1 times [2020-10-15 02:55:52,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:52,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859764058] [2020-10-15 02:55:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:57,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:55:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 02:55:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:55:57,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:57,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:55:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:55:57,643 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:55:57,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:57,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:55:57,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:57,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:57,712 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 02:55:57,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859764058] [2020-10-15 02:55:57,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:57,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:57,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771444960] [2020-10-15 02:55:57,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:57,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:57,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:57,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:57,717 INFO L87 Difference]: Start difference. First operand 428 states and 628 transitions. Second operand 5 states. [2020-10-15 02:55:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:59,490 INFO L93 Difference]: Finished difference Result 1220 states and 1783 transitions. [2020-10-15 02:55:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:59,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 02:55:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:59,498 INFO L225 Difference]: With dead ends: 1220 [2020-10-15 02:55:59,499 INFO L226 Difference]: Without dead ends: 824 [2020-10-15 02:55:59,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-15 02:55:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822. [2020-10-15 02:55:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-15 02:55:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1196 transitions. [2020-10-15 02:55:59,629 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1196 transitions. Word has length 100 [2020-10-15 02:55:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:59,631 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1196 transitions. [2020-10-15 02:55:59,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1196 transitions. [2020-10-15 02:55:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 02:55:59,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:59,640 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] [2020-10-15 02:55:59,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:55:59,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:59,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2001404961, now seen corresponding path program 1 times [2020-10-15 02:55:59,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:59,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55475305] [2020-10-15 02:55:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:00,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 02:56:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:56:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:56:04,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:04,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 02:56:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:05,038 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:05,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:05,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:05,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:56:05,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:05,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:05,115 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 02:56:05,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55475305] [2020-10-15 02:56:05,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:05,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:05,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352858061] [2020-10-15 02:56:05,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:05,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:05,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:05,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:05,125 INFO L87 Difference]: Start difference. First operand 822 states and 1196 transitions. Second operand 5 states. [2020-10-15 02:56:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:07,014 INFO L93 Difference]: Finished difference Result 2318 states and 3346 transitions. [2020-10-15 02:56:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:07,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-15 02:56:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:07,025 INFO L225 Difference]: With dead ends: 2318 [2020-10-15 02:56:07,026 INFO L226 Difference]: Without dead ends: 1564 [2020-10-15 02:56:07,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:07,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2020-10-15 02:56:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1562. [2020-10-15 02:56:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-10-15 02:56:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2242 transitions. [2020-10-15 02:56:07,164 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2242 transitions. Word has length 101 [2020-10-15 02:56:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:07,165 INFO L479 AbstractCegarLoop]: Abstraction has 1562 states and 2242 transitions. [2020-10-15 02:56:07,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2242 transitions. [2020-10-15 02:56:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 02:56:07,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:07,169 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] [2020-10-15 02:56:07,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:56:07,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1259751311, now seen corresponding path program 1 times [2020-10-15 02:56:07,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:07,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067140273] [2020-10-15 02:56:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:12,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:12,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 02:56:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 02:56:12,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:12,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:56:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:12,482 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:12,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:12,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:12,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:56:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:12,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:12,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067140273] [2020-10-15 02:56:12,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:12,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:12,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626106666] [2020-10-15 02:56:12,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:12,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:12,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:12,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:12,535 INFO L87 Difference]: Start difference. First operand 1562 states and 2242 transitions. Second operand 5 states. [2020-10-15 02:56:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:14,223 INFO L93 Difference]: Finished difference Result 4454 states and 6350 transitions. [2020-10-15 02:56:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:14,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-15 02:56:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:14,240 INFO L225 Difference]: With dead ends: 4454 [2020-10-15 02:56:14,240 INFO L226 Difference]: Without dead ends: 2972 [2020-10-15 02:56:14,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-10-15 02:56:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2970. [2020-10-15 02:56:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2020-10-15 02:56:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4188 transitions. [2020-10-15 02:56:14,447 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4188 transitions. Word has length 102 [2020-10-15 02:56:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:14,447 INFO L479 AbstractCegarLoop]: Abstraction has 2970 states and 4188 transitions. [2020-10-15 02:56:14,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4188 transitions. [2020-10-15 02:56:14,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 02:56:14,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:14,453 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] [2020-10-15 02:56:14,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:56:14,453 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:14,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1852275745, now seen corresponding path program 1 times [2020-10-15 02:56:14,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:14,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364978479] [2020-10-15 02:56:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:19,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 02:56:19,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 02:56:19,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:56:19,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:19,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 02:56:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:19,817 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:19,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:19,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:19,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:56:19,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:19,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:19,898 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 02:56:19,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364978479] [2020-10-15 02:56:19,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:19,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:19,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144276483] [2020-10-15 02:56:19,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:19,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:19,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:19,904 INFO L87 Difference]: Start difference. First operand 2970 states and 4188 transitions. Second operand 5 states. [2020-10-15 02:56:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:22,056 INFO L93 Difference]: Finished difference Result 7730 states and 11036 transitions. [2020-10-15 02:56:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:22,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-15 02:56:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:22,080 INFO L225 Difference]: With dead ends: 7730 [2020-10-15 02:56:22,080 INFO L226 Difference]: Without dead ends: 5712 [2020-10-15 02:56:22,086 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 02:56:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2020-10-15 02:56:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 5710. [2020-10-15 02:56:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5710 states. [2020-10-15 02:56:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 7954 transitions. [2020-10-15 02:56:22,564 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 7954 transitions. Word has length 103 [2020-10-15 02:56:22,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:22,565 INFO L479 AbstractCegarLoop]: Abstraction has 5710 states and 7954 transitions. [2020-10-15 02:56:22,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 7954 transitions. [2020-10-15 02:56:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:56:22,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:22,574 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] [2020-10-15 02:56:22,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:56:22,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:22,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2032348018, now seen corresponding path program 1 times [2020-10-15 02:56:22,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:22,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524204793] [2020-10-15 02:56:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:22,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:27,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 02:56:27,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:56:27,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:56:27,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:27,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:27,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:27,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:56:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:27,884 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:27,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:27,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:27,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:56:27,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:27,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:27,940 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 02:56:27,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524204793] [2020-10-15 02:56:27,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:27,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:27,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190885321] [2020-10-15 02:56:27,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:27,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:27,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:27,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:27,944 INFO L87 Difference]: Start difference. First operand 5710 states and 7954 transitions. Second operand 5 states. [2020-10-15 02:56:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:30,274 INFO L93 Difference]: Finished difference Result 14554 states and 20521 transitions. [2020-10-15 02:56:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:30,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-15 02:56:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:30,325 INFO L225 Difference]: With dead ends: 14554 [2020-10-15 02:56:30,326 INFO L226 Difference]: Without dead ends: 10968 [2020-10-15 02:56:30,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10968 states. [2020-10-15 02:56:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10968 to 10966. [2020-10-15 02:56:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10966 states. [2020-10-15 02:56:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10966 states to 10966 states and 15063 transitions. [2020-10-15 02:56:31,235 INFO L78 Accepts]: Start accepts. Automaton has 10966 states and 15063 transitions. Word has length 104 [2020-10-15 02:56:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:31,236 INFO L479 AbstractCegarLoop]: Abstraction has 10966 states and 15063 transitions. [2020-10-15 02:56:31,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10966 states and 15063 transitions. [2020-10-15 02:56:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 02:56:31,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:31,252 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] [2020-10-15 02:56:31,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:56:31,253 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:31,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash 593695071, now seen corresponding path program 1 times [2020-10-15 02:56:31,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:31,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018690326] [2020-10-15 02:56:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:36,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 02:56:36,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:56:36,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:56:36,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:36,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 02:56:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:56:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:36,504 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:36,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:56:36,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:36,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:36,541 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 02:56:36,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018690326] [2020-10-15 02:56:36,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:36,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:36,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436012611] [2020-10-15 02:56:36,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:36,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:36,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:36,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:36,543 INFO L87 Difference]: Start difference. First operand 10966 states and 15063 transitions. Second operand 5 states. [2020-10-15 02:56:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:37,911 INFO L93 Difference]: Finished difference Result 17905 states and 24529 transitions. [2020-10-15 02:56:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:37,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-15 02:56:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:37,937 INFO L225 Difference]: With dead ends: 17905 [2020-10-15 02:56:37,937 INFO L226 Difference]: Without dead ends: 7071 [2020-10-15 02:56:37,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2020-10-15 02:56:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7068. [2020-10-15 02:56:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-15 02:56:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 9650 transitions. [2020-10-15 02:56:38,526 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 9650 transitions. Word has length 105 [2020-10-15 02:56:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:38,526 INFO L479 AbstractCegarLoop]: Abstraction has 7068 states and 9650 transitions. [2020-10-15 02:56:38,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 9650 transitions. [2020-10-15 02:56:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 02:56:38,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:38,537 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] [2020-10-15 02:56:38,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:56:38,538 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1786139830, now seen corresponding path program 1 times [2020-10-15 02:56:38,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:38,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311578218] [2020-10-15 02:56:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:43,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 02:56:43,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:56:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:56:43,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:43,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 02:56:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:43,794 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:43,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:43,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:43,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:56:43,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:43,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:43,840 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 02:56:43,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311578218] [2020-10-15 02:56:43,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:43,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:43,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343318791] [2020-10-15 02:56:43,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:43,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:43,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:43,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:43,843 INFO L87 Difference]: Start difference. First operand 7068 states and 9650 transitions. Second operand 5 states. [2020-10-15 02:56:44,059 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-15 02:56:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:46,168 INFO L93 Difference]: Finished difference Result 13033 states and 17663 transitions. [2020-10-15 02:56:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:56:46,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-15 02:56:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:46,185 INFO L225 Difference]: With dead ends: 13033 [2020-10-15 02:56:46,186 INFO L226 Difference]: Without dead ends: 7052 [2020-10-15 02:56:46,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:56:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7052 states. [2020-10-15 02:56:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7052 to 7050. [2020-10-15 02:56:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7050 states. [2020-10-15 02:56:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 9583 transitions. [2020-10-15 02:56:46,698 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 9583 transitions. Word has length 108 [2020-10-15 02:56:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:46,698 INFO L479 AbstractCegarLoop]: Abstraction has 7050 states and 9583 transitions. [2020-10-15 02:56:46,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 9583 transitions. [2020-10-15 02:56:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 02:56:46,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:46,708 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] [2020-10-15 02:56:46,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:56:46,709 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:46,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1112322213, now seen corresponding path program 1 times [2020-10-15 02:56:46,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:46,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571495061] [2020-10-15 02:56:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:56:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 02:56:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:51,966 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:51,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:51,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:51,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:51,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:56:51,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:51,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:51,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:51,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:51,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:52,000 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 02:56:52,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571495061] [2020-10-15 02:56:52,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:52,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:52,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845945701] [2020-10-15 02:56:52,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:52,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:52,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:52,003 INFO L87 Difference]: Start difference. First operand 7050 states and 9583 transitions. Second operand 5 states. [2020-10-15 02:56:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:53,255 INFO L93 Difference]: Finished difference Result 11732 states and 15916 transitions. [2020-10-15 02:56:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:53,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-15 02:56:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:53,269 INFO L225 Difference]: With dead ends: 11732 [2020-10-15 02:56:53,269 INFO L226 Difference]: Without dead ends: 4724 [2020-10-15 02:56:53,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2020-10-15 02:56:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4723. [2020-10-15 02:56:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4723 states. [2020-10-15 02:56:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6388 transitions. [2020-10-15 02:56:53,784 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6388 transitions. Word has length 109 [2020-10-15 02:56:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:53,784 INFO L479 AbstractCegarLoop]: Abstraction has 4723 states and 6388 transitions. [2020-10-15 02:56:53,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6388 transitions. [2020-10-15 02:56:53,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 02:56:53,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:53,790 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] [2020-10-15 02:56:53,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:56:53,791 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:53,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:53,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1234595437, now seen corresponding path program 1 times [2020-10-15 02:56:53,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:53,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638913039] [2020-10-15 02:56:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:53,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:54,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:54,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:58,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:58,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 02:56:58,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4745 [2020-10-15 02:56:58,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:58,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 02:56:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:58,791 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:56:58,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:58,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:58,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:56:58,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:58,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:58,838 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 02:56:58,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638913039] [2020-10-15 02:56:58,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:58,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:58,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329362610] [2020-10-15 02:56:58,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:58,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:58,840 INFO L87 Difference]: Start difference. First operand 4723 states and 6388 transitions. Second operand 5 states. [2020-10-15 02:56:59,041 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-15 02:57:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:01,030 INFO L93 Difference]: Finished difference Result 8427 states and 11368 transitions. [2020-10-15 02:57:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:57:01,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-15 02:57:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:01,039 INFO L225 Difference]: With dead ends: 8427 [2020-10-15 02:57:01,039 INFO L226 Difference]: Without dead ends: 4692 [2020-10-15 02:57:01,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:57:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4692 states. [2020-10-15 02:57:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4692 to 4690. [2020-10-15 02:57:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4690 states. [2020-10-15 02:57:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 6318 transitions. [2020-10-15 02:57:01,374 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 6318 transitions. Word has length 112 [2020-10-15 02:57:01,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:01,374 INFO L479 AbstractCegarLoop]: Abstraction has 4690 states and 6318 transitions. [2020-10-15 02:57:01,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 6318 transitions. [2020-10-15 02:57:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 02:57:01,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:01,379 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] [2020-10-15 02:57:01,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:57:01,379 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1998325799, now seen corresponding path program 1 times [2020-10-15 02:57:01,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:01,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200013251] [2020-10-15 02:57:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:02,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 02:57:02,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:57:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-15 02:57:02,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:02,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:57:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:57:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:03,174 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:03,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:03,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:03,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:03,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:03,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:03,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:03,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:03,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:03,203 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 02:57:03,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200013251] [2020-10-15 02:57:03,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:03,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:03,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39567174] [2020-10-15 02:57:03,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:03,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:03,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:03,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:03,205 INFO L87 Difference]: Start difference. First operand 4690 states and 6318 transitions. Second operand 5 states. [2020-10-15 02:57:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:04,345 INFO L93 Difference]: Finished difference Result 8270 states and 11180 transitions. [2020-10-15 02:57:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:04,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-15 02:57:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:04,350 INFO L225 Difference]: With dead ends: 8270 [2020-10-15 02:57:04,350 INFO L226 Difference]: Without dead ends: 3829 [2020-10-15 02:57:04,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2020-10-15 02:57:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3829. [2020-10-15 02:57:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3829 states. [2020-10-15 02:57:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5142 transitions. [2020-10-15 02:57:04,741 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5142 transitions. Word has length 113 [2020-10-15 02:57:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:04,742 INFO L479 AbstractCegarLoop]: Abstraction has 3829 states and 5142 transitions. [2020-10-15 02:57:04,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5142 transitions. [2020-10-15 02:57:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 02:57:04,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:04,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:04,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:57:04,746 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1940843426, now seen corresponding path program 1 times [2020-10-15 02:57:04,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:04,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716899495] [2020-10-15 02:57:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:09,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 02:57:09,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:57:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:57:09,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:09,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:57:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:57:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:10,662 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:10,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:10,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:10,715 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 02:57:10,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716899495] [2020-10-15 02:57:10,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:10,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 02:57:10,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953264586] [2020-10-15 02:57:10,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:57:10,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:10,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:57:10,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:57:10,718 INFO L87 Difference]: Start difference. First operand 3829 states and 5142 transitions. Second operand 15 states. [2020-10-15 02:57:10,958 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 02:57:11,838 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-10-15 02:57:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:15,708 INFO L93 Difference]: Finished difference Result 13795 states and 19747 transitions. [2020-10-15 02:57:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 02:57:15,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 115 [2020-10-15 02:57:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:15,723 INFO L225 Difference]: With dead ends: 13795 [2020-10-15 02:57:15,723 INFO L226 Difference]: Without dead ends: 12683 [2020-10-15 02:57:15,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:57:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2020-10-15 02:57:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 4415. [2020-10-15 02:57:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4415 states. [2020-10-15 02:57:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 5860 transitions. [2020-10-15 02:57:16,202 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 5860 transitions. Word has length 115 [2020-10-15 02:57:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:16,202 INFO L479 AbstractCegarLoop]: Abstraction has 4415 states and 5860 transitions. [2020-10-15 02:57:16,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:57:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 5860 transitions. [2020-10-15 02:57:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 02:57:16,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:16,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:16,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:57:16,207 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:16,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:16,207 INFO L82 PathProgramCache]: Analyzing trace with hash -657487454, now seen corresponding path program 1 times [2020-10-15 02:57:16,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:16,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331213687] [2020-10-15 02:57:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:16,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 02:57:16,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:57:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-15 02:57:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:16,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 02:57:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 02:57:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:17,274 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:17,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:17,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:17,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:57:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:17,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:17,304 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 02:57:17,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331213687] [2020-10-15 02:57:17,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:17,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:17,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558590184] [2020-10-15 02:57:17,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:17,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:17,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:17,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:17,306 INFO L87 Difference]: Start difference. First operand 4415 states and 5860 transitions. Second operand 5 states. [2020-10-15 02:57:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:18,547 INFO L93 Difference]: Finished difference Result 7131 states and 9479 transitions. [2020-10-15 02:57:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:18,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-15 02:57:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:18,552 INFO L225 Difference]: With dead ends: 7131 [2020-10-15 02:57:18,553 INFO L226 Difference]: Without dead ends: 3771 [2020-10-15 02:57:18,558 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 02:57:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2020-10-15 02:57:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3771. [2020-10-15 02:57:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-10-15 02:57:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4997 transitions. [2020-10-15 02:57:18,893 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4997 transitions. Word has length 115 [2020-10-15 02:57:18,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:18,893 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 4997 transitions. [2020-10-15 02:57:18,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:18,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4997 transitions. [2020-10-15 02:57:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 02:57:18,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:18,897 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] [2020-10-15 02:57:18,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:57:18,897 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:18,897 INFO L82 PathProgramCache]: Analyzing trace with hash 643508408, now seen corresponding path program 1 times [2020-10-15 02:57:18,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:18,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602177876] [2020-10-15 02:57:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:19,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:22,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 02:57:22,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:57:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3329 [2020-10-15 02:57:22,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:22,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:57:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:57:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:22,608 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:22,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:22,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:22,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:57:22,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:22,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:22,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:22,650 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 02:57:22,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602177876] [2020-10-15 02:57:22,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:22,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:57:22,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409097550] [2020-10-15 02:57:22,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:57:22,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:22,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:57:22,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:57:22,653 INFO L87 Difference]: Start difference. First operand 3771 states and 4997 transitions. Second operand 11 states. [2020-10-15 02:57:22,867 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:27,008 INFO L93 Difference]: Finished difference Result 19299 states and 28392 transitions. [2020-10-15 02:57:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:57:27,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2020-10-15 02:57:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:27,031 INFO L225 Difference]: With dead ends: 19299 [2020-10-15 02:57:27,031 INFO L226 Difference]: Without dead ends: 17631 [2020-10-15 02:57:27,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:57:27,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17631 states. [2020-10-15 02:57:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17631 to 6029. [2020-10-15 02:57:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6029 states. [2020-10-15 02:57:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 8163 transitions. [2020-10-15 02:57:27,695 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 8163 transitions. Word has length 117 [2020-10-15 02:57:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:27,695 INFO L479 AbstractCegarLoop]: Abstraction has 6029 states and 8163 transitions. [2020-10-15 02:57:27,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:57:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 8163 transitions. [2020-10-15 02:57:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 02:57:27,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:27,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:27,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:57:27,701 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:27,701 INFO L82 PathProgramCache]: Analyzing trace with hash -382853912, now seen corresponding path program 1 times [2020-10-15 02:57:27,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:27,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611462719] [2020-10-15 02:57:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:32,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:32,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 02:57:32,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:57:32,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-15 02:57:32,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:32,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:57:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:57:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 02:57:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:33,178 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:33,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:33,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:33,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:57:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:33,229 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 02:57:33,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611462719] [2020-10-15 02:57:33,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:33,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:57:33,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567663918] [2020-10-15 02:57:33,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:57:33,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:33,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:57:33,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:57:33,231 INFO L87 Difference]: Start difference. First operand 6029 states and 8163 transitions. Second operand 12 states. [2020-10-15 02:57:33,482 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 02:57:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:37,783 INFO L93 Difference]: Finished difference Result 21177 states and 29789 transitions. [2020-10-15 02:57:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:57:37,783 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-10-15 02:57:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:37,807 INFO L225 Difference]: With dead ends: 21177 [2020-10-15 02:57:37,807 INFO L226 Difference]: Without dead ends: 16123 [2020-10-15 02:57:37,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:57:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16123 states. [2020-10-15 02:57:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16123 to 10043. [2020-10-15 02:57:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10043 states. [2020-10-15 02:57:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10043 states to 10043 states and 13899 transitions. [2020-10-15 02:57:39,062 INFO L78 Accepts]: Start accepts. Automaton has 10043 states and 13899 transitions. Word has length 117 [2020-10-15 02:57:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:39,062 INFO L479 AbstractCegarLoop]: Abstraction has 10043 states and 13899 transitions. [2020-10-15 02:57:39,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:57:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10043 states and 13899 transitions. [2020-10-15 02:57:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 02:57:39,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:39,069 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] [2020-10-15 02:57:39,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:57:39,069 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:39,069 INFO L82 PathProgramCache]: Analyzing trace with hash 900502060, now seen corresponding path program 1 times [2020-10-15 02:57:39,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:39,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537001811] [2020-10-15 02:57:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:39,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:39,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 02:57:39,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:57:39,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-10-15 02:57:39,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:39,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 02:57:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:57:39,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:40,236 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:40,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:40,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:40,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:40,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:40,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:40,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537001811] [2020-10-15 02:57:40,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:40,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:57:40,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358328755] [2020-10-15 02:57:40,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:40,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:40,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:40,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:40,277 INFO L87 Difference]: Start difference. First operand 10043 states and 13899 transitions. Second operand 6 states. [2020-10-15 02:57:40,528 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-15 02:57:46,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:46,478 INFO L93 Difference]: Finished difference Result 36629 states and 55615 transitions. [2020-10-15 02:57:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:57:46,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-15 02:57:46,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:46,518 INFO L225 Difference]: With dead ends: 36629 [2020-10-15 02:57:46,518 INFO L226 Difference]: Without dead ends: 31287 [2020-10-15 02:57:46,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:57:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31287 states. [2020-10-15 02:57:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31287 to 15365. [2020-10-15 02:57:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15365 states. [2020-10-15 02:57:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15365 states to 15365 states and 21993 transitions. [2020-10-15 02:57:48,806 INFO L78 Accepts]: Start accepts. Automaton has 15365 states and 21993 transitions. Word has length 117 [2020-10-15 02:57:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:48,807 INFO L479 AbstractCegarLoop]: Abstraction has 15365 states and 21993 transitions. [2020-10-15 02:57:48,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15365 states and 21993 transitions. [2020-10-15 02:57:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 02:57:48,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:48,813 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] [2020-10-15 02:57:48,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:57:48,814 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash -549616286, now seen corresponding path program 1 times [2020-10-15 02:57:48,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:48,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572998865] [2020-10-15 02:57:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:48,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:57:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:57:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:49,289 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:57:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:49,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:49,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:57:49,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:49,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:57:49,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:49,325 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 02:57:49,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572998865] [2020-10-15 02:57:49,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:49,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:49,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138021843] [2020-10-15 02:57:49,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:49,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:49,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:49,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:49,328 INFO L87 Difference]: Start difference. First operand 15365 states and 21993 transitions. Second operand 6 states. [2020-10-15 02:57:49,550 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:52,765 INFO L93 Difference]: Finished difference Result 28483 states and 41404 transitions. [2020-10-15 02:57:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:57:52,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-15 02:57:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:52,785 INFO L225 Difference]: With dead ends: 28483 [2020-10-15 02:57:52,785 INFO L226 Difference]: Without dead ends: 14621 [2020-10-15 02:57:52,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:57:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14621 states. [2020-10-15 02:57:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14621 to 14548. [2020-10-15 02:57:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14548 states. [2020-10-15 02:57:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14548 states to 14548 states and 20789 transitions. [2020-10-15 02:57:54,837 INFO L78 Accepts]: Start accepts. Automaton has 14548 states and 20789 transitions. Word has length 117 [2020-10-15 02:57:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:54,837 INFO L479 AbstractCegarLoop]: Abstraction has 14548 states and 20789 transitions. [2020-10-15 02:57:54,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 14548 states and 20789 transitions. [2020-10-15 02:57:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 02:57:54,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:54,843 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] [2020-10-15 02:57:54,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:57:54,844 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash -449238055, now seen corresponding path program 1 times [2020-10-15 02:57:54,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:54,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309517391] [2020-10-15 02:57:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 02:57:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:00,132 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-10-15 02:58:00,772 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 02:58:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:00,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:00,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:00,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:58:00,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:00,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:00,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:00,829 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 02:58:00,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309517391] [2020-10-15 02:58:00,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:00,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-15 02:58:00,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601853305] [2020-10-15 02:58:00,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:58:00,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:58:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:58:00,831 INFO L87 Difference]: Start difference. First operand 14548 states and 20789 transitions. Second operand 19 states. [2020-10-15 02:58:01,086 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-15 02:58:01,903 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-15 02:58:02,086 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-15 02:58:02,522 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-15 02:58:02,752 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-15 02:58:03,145 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-15 02:58:03,463 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-15 02:58:03,906 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-15 02:58:04,242 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-15 02:58:04,508 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-15 02:58:04,925 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-15 02:58:05,138 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-15 02:58:05,567 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-15 02:58:13,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:13,739 INFO L93 Difference]: Finished difference Result 42917 states and 62608 transitions. [2020-10-15 02:58:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:58:13,740 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 117 [2020-10-15 02:58:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:13,783 INFO L225 Difference]: With dead ends: 42917 [2020-10-15 02:58:13,784 INFO L226 Difference]: Without dead ends: 37963 [2020-10-15 02:58:13,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:58:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37963 states. [2020-10-15 02:58:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37963 to 15093. [2020-10-15 02:58:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15093 states. [2020-10-15 02:58:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15093 states to 15093 states and 21439 transitions. [2020-10-15 02:58:16,545 INFO L78 Accepts]: Start accepts. Automaton has 15093 states and 21439 transitions. Word has length 117 [2020-10-15 02:58:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:16,545 INFO L479 AbstractCegarLoop]: Abstraction has 15093 states and 21439 transitions. [2020-10-15 02:58:16,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:58:16,545 INFO L276 IsEmpty]: Start isEmpty. Operand 15093 states and 21439 transitions. [2020-10-15 02:58:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 02:58:16,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:16,551 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] [2020-10-15 02:58:16,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:58:16,552 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:16,552 INFO L82 PathProgramCache]: Analyzing trace with hash -413635384, now seen corresponding path program 1 times [2020-10-15 02:58:16,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:16,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124790284] [2020-10-15 02:58:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 02:58:16,586 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 02:58:16,587 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 02:58:16,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:58:16,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:58:16 BoogieIcfgContainer [2020-10-15 02:58:16,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:58:16,630 INFO L168 Benchmark]: Toolchain (without parser) took 155358.67 ms. Allocated memory was 145.8 MB in the beginning and 2.6 GB in the end (delta: 2.5 GB). Free memory was 101.0 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 754.2 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:16,631 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-15 02:58:16,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.09 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 167.8 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:16,632 INFO L168 Benchmark]: Boogie Preprocessor took 82.24 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 164.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:16,632 INFO L168 Benchmark]: RCFGBuilder took 1393.30 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.8 MB in the beginning and 192.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:16,633 INFO L168 Benchmark]: TraceAbstraction took 153142.80 ms. Allocated memory was 234.9 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 192.0 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 756.0 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:16,636 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.09 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 167.8 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.24 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 164.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1393.30 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.8 MB in the beginning and 192.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 153142.80 ms. Allocated memory was 234.9 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 192.0 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 756.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 539]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] char id2 = '\x0'; [L48] unsigned char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] char id3 = '\x0'; [L55] unsigned char r3 = '\x0'; [L56] char st3 = '\x0'; [L57] char nl3 = '\x0'; [L58] char m3 = '\x0'; [L59] char max3 = '\x0'; [L60] _Bool mode3 = 0; [L64] void (*nodes[3])() = { &node1, &node2, &node3 }; [L68] int __return_1142; [L69] int __return_1270; [L70] int __return_1389; [L71] int __return_1499; [L74] int main__c1; [L75] int main__i2; [L76] main__c1 = 0 [L77] ep12 = __VERIFIER_nondet_bool() [L78] ep13 = __VERIFIER_nondet_bool() [L79] ep21 = __VERIFIER_nondet_bool() [L80] ep23 = __VERIFIER_nondet_bool() [L81] ep31 = __VERIFIER_nondet_bool() [L82] ep32 = __VERIFIER_nondet_bool() [L83] id1 = __VERIFIER_nondet_char() [L84] r1 = __VERIFIER_nondet_uchar() [L85] st1 = __VERIFIER_nondet_char() [L86] nl1 = __VERIFIER_nondet_char() [L87] m1 = __VERIFIER_nondet_char() [L88] max1 = __VERIFIER_nondet_char() [L89] mode1 = __VERIFIER_nondet_bool() [L90] id2 = __VERIFIER_nondet_char() [L91] r2 = __VERIFIER_nondet_uchar() [L92] st2 = __VERIFIER_nondet_char() [L93] nl2 = __VERIFIER_nondet_char() [L94] m2 = __VERIFIER_nondet_char() [L95] max2 = __VERIFIER_nondet_char() [L96] mode2 = __VERIFIER_nondet_bool() [L97] id3 = __VERIFIER_nondet_char() [L98] r3 = __VERIFIER_nondet_uchar() [L99] st3 = __VERIFIER_nondet_char() [L100] nl3 = __VERIFIER_nondet_char() [L101] m3 = __VERIFIER_nondet_char() [L102] max3 = __VERIFIER_nondet_char() [L103] mode3 = __VERIFIER_nondet_bool() [L105] _Bool init__r121; [L106] _Bool init__r131; [L107] _Bool init__r211; [L108] _Bool init__r231; [L109] _Bool init__r311; [L110] _Bool init__r321; [L111] _Bool init__r122; [L112] int init__tmp; [L113] _Bool init__r132; [L114] int init__tmp___0; [L115] _Bool init__r212; [L116] int init__tmp___1; [L117] _Bool init__r232; [L118] int init__tmp___2; [L119] _Bool init__r312; [L120] int init__tmp___3; [L121] _Bool init__r322; [L122] int init__tmp___4; [L123] int init__tmp___5; [L124] init__r121 = ep12 [L125] init__r131 = ep13 [L126] init__r211 = ep21 [L127] init__r231 = ep23 [L128] init__r311 = ep31 [L129] init__r321 = ep32 [L130] COND TRUE !(init__r121 == 0) [L132] init__tmp = 1 [L134] init__r122 = (_Bool)init__tmp [L135] COND FALSE !(!(init__r131 == 0)) [L1615] COND TRUE !(init__r121 == 0) [L1617] COND TRUE !(ep23 == 0) [L1619] init__tmp___0 = 1 [L139] init__r132 = (_Bool)init__tmp___0 [L140] COND FALSE !(!(init__r211 == 0)) [L1592] COND TRUE !(init__r231 == 0) [L1594] COND TRUE !(ep31 == 0) [L1596] init__tmp___1 = 1 [L144] init__r212 = (_Bool)init__tmp___1 [L145] COND TRUE !(init__r231 == 0) [L147] init__tmp___2 = 1 [L149] init__r232 = (_Bool)init__tmp___2 [L150] COND TRUE !(init__r311 == 0) [L152] init__tmp___3 = 1 [L154] init__r312 = (_Bool)init__tmp___3 [L155] COND FALSE !(!(init__r321 == 0)) [L1523] COND TRUE !(init__r311 == 0) [L1525] COND TRUE !(ep12 == 0) [L1527] init__tmp___4 = 1 [L159] init__r322 = (_Bool)init__tmp___4 [L160] COND TRUE ((int)id1) != ((int)id2) [L162] COND TRUE ((int)id1) != ((int)id3) [L164] COND TRUE ((int)id2) != ((int)id3) [L166] COND TRUE ((int)id1) >= 0 [L168] COND TRUE ((int)id2) >= 0 [L170] COND TRUE ((int)id3) >= 0 [L172] COND TRUE ((int)r1) == 0 [L174] COND TRUE ((int)r2) == 0 [L176] COND TRUE ((int)r3) == 0 [L178] COND TRUE !(init__r122 == 0) [L180] COND TRUE !(init__r132 == 0) [L182] COND TRUE !(init__r212 == 0) [L184] COND TRUE !(init__r232 == 0) [L186] COND TRUE !(init__r312 == 0) [L188] COND TRUE !(init__r322 == 0) [L190] COND TRUE ((int)max1) == ((int)id1) [L192] COND TRUE ((int)max2) == ((int)id2) [L194] COND TRUE ((int)max3) == ((int)id3) [L196] COND TRUE ((int)st1) == 0 [L198] COND TRUE ((int)st2) == 0 [L200] COND TRUE ((int)st3) == 0 [L202] COND TRUE ((int)nl1) == 0 [L204] COND TRUE ((int)nl2) == 0 [L206] COND TRUE ((int)nl3) == 0 [L208] COND TRUE ((int)mode1) == 0 [L210] COND TRUE ((int)mode2) == 0 [L212] COND TRUE ((int)mode3) == 0 [L214] init__tmp___5 = 1 [L215] __return_1142 = init__tmp___5 [L216] main__i2 = __return_1142 [L217] COND TRUE main__i2 != 0 [L219] p12_old = nomsg [L220] p12_new = nomsg [L221] p13_old = nomsg [L222] p13_new = nomsg [L223] p21_old = nomsg [L224] p21_new = nomsg [L225] p23_old = nomsg [L226] p23_new = nomsg [L227] p31_old = nomsg [L228] p31_new = nomsg [L229] p32_old = nomsg [L230] p32_new = nomsg [L231] main__i2 = 0 [L233] COND FALSE !(!(mode1 == 0)) [L239] COND TRUE ((int)r1) < 2 [L241] COND TRUE !(ep12 == 0) [L243] int node1____CPAchecker_TMP_0; [L244] COND TRUE max1 != nomsg [L246] COND TRUE p12_new == nomsg [L248] node1____CPAchecker_TMP_0 = max1 [L250] p12_new = node1____CPAchecker_TMP_0 [L252] COND FALSE !(!(ep13 == 0)) [L263] mode1 = 1 [L265] COND FALSE !(!(mode2 == 0)) [L271] COND TRUE ((int)r2) < 2 [L273] COND FALSE !(!(ep21 == 0)) [L284] COND TRUE !(ep23 == 0) [L286] int node2____CPAchecker_TMP_1; [L287] COND TRUE max2 != nomsg [L289] COND TRUE p23_new == nomsg [L291] node2____CPAchecker_TMP_1 = max2 [L293] p23_new = node2____CPAchecker_TMP_1 [L295] mode2 = 1 [L297] COND FALSE !(!(mode3 == 0)) [L303] COND TRUE ((int)r3) < 2 [L305] COND TRUE !(ep31 == 0) [L307] int node3____CPAchecker_TMP_0; [L308] COND TRUE max3 != nomsg [L310] COND TRUE p31_new == nomsg [L312] node3____CPAchecker_TMP_0 = max3 [L314] p31_new = node3____CPAchecker_TMP_0 [L316] COND FALSE !(!(ep32 == 0)) [L327] mode3 = 1 [L328] p12_old = p12_new [L329] p12_new = nomsg [L330] p13_old = p13_new [L331] p13_new = nomsg [L332] p21_old = p21_new [L333] p21_new = nomsg [L334] p23_old = p23_new [L335] p23_new = nomsg [L336] p31_old = p31_new [L337] p31_new = nomsg [L338] p32_old = p32_new [L339] p32_new = nomsg [L341] int check__tmp; [L342] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L344] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L346] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L348] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] COND FALSE !(((int)r1) >= 2) [L366] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L368] COND TRUE ((int)r1) < 2 [L370] check__tmp = 1 [L371] __return_1270 = check__tmp [L372] main__c1 = __return_1270 [L374] _Bool __tmp_1; [L375] __tmp_1 = main__c1 [L376] _Bool assert__arg; [L377] assert__arg = __tmp_1 [L378] COND FALSE !(assert__arg == 0) [L385] COND TRUE !(mode1 == 0) [L387] COND FALSE !(r1 == 255) [L393] r1 = r1 + 1 [L394] COND FALSE !(!(ep21 == 0)) [L402] COND TRUE !(ep31 == 0) [L404] m1 = p31_old [L405] p31_old = nomsg [L406] COND FALSE !(((int)m1) > ((int)max1)) [L410] COND TRUE ((int)r1) == 1 [L412] COND TRUE ((int)max1) == ((int)id1) [L414] st1 = 1 [L416] mode1 = 0 [L418] COND TRUE !(mode2 == 0) [L420] COND FALSE !(r2 == 255) [L426] r2 = r2 + 1 [L427] COND TRUE !(ep12 == 0) [L429] m2 = p12_old [L430] p12_old = nomsg [L431] COND FALSE !(((int)m2) > ((int)max2)) [L435] COND FALSE !(!(ep32 == 0)) [L443] COND FALSE !(((int)r2) == 2) [L449] mode2 = 0 [L451] COND TRUE !(mode3 == 0) [L453] COND FALSE !(r3 == 255) [L459] r3 = r3 + 1 [L460] COND FALSE !(!(ep13 == 0)) [L468] COND TRUE !(ep23 == 0) [L470] m3 = p23_old [L471] p23_old = nomsg [L472] COND TRUE ((int)m3) > ((int)max3) [L474] max3 = m3 [L476] COND FALSE !(((int)r3) == 2) [L482] mode3 = 0 [L483] p12_old = p12_new [L484] p12_new = nomsg [L485] p13_old = p13_new [L486] p13_new = nomsg [L487] p21_old = p21_new [L488] p21_new = nomsg [L489] p23_old = p23_new [L490] p23_new = nomsg [L491] p31_old = p31_new [L492] p31_new = nomsg [L493] p32_old = p32_new [L494] p32_new = nomsg [L496] int check__tmp; [L497] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L499] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L501] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L503] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L505] COND FALSE !(((int)r1) >= 2) [L511] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L1093] check__tmp = 0 [L529] __return_1389 = check__tmp [L530] main__c1 = __return_1389 [L533] _Bool __tmp_2; [L534] __tmp_2 = main__c1 [L535] _Bool assert__arg; [L536] assert__arg = __tmp_2 [L537] COND TRUE assert__arg == 0 [L539] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 153.0s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 58.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8564 SDtfs, 17008 SDslu, 22194 SDs, 0 SdLazy, 14859 SolverSat, 305 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15365occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 64835 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 78.4s InterpolantComputationTime, 2088 NumberOfCodeBlocks, 2088 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1953 ConstructedInterpolants, 0 QuantifiedInterpolants, 1786576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...