/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:12:42,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:12:42,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:12:42,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:12:42,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:12:42,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:12:42,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:12:42,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:12:42,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:12:42,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:12:42,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:12:42,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:12:42,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:12:42,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:12:42,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:12:42,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:12:42,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:12:42,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:12:42,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:12:42,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:12:42,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:12:42,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:12:42,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:12:42,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:12:42,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:12:42,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:12:42,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:12:42,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:12:42,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:12:42,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:12:42,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:12:42,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:12:42,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:12:42,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:12:42,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:12:42,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:12:42,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:12:42,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:12:42,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:12:42,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:12:42,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:12:42,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:12:42,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:12:42,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:12:42,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:12:42,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:12:42,194 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:12:42,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:12:42,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:12:42,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:12:42,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:12:42,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:12:42,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:12:42,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:12:42,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:12:42,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:12:42,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:12:42,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:12:42,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:12:42,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:12:42,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:12:42,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:12:42,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:12:42,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:12:42,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:12:42,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:12:42,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:12:42,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:12:42,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:12:42,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:12:42,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:12:42,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:12:42,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:12:42,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:12:42,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:12:42,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:12:42,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:12:42,540 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:12:42,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade1741bd/806ad52bb9cd4f6ab1469c14e5355a15/FLAG57ff595c3 [2020-10-15 04:12:43,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:12:43,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:12:43,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade1741bd/806ad52bb9cd4f6ab1469c14e5355a15/FLAG57ff595c3 [2020-10-15 04:12:43,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade1741bd/806ad52bb9cd4f6ab1469c14e5355a15 [2020-10-15 04:12:43,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:12:43,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:12:43,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:12:43,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:12:43,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:12:43,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:12:43" (1/1) ... [2020-10-15 04:12:43,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368a0f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:43, skipping insertion in model container [2020-10-15 04:12:43,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:12:43" (1/1) ... [2020-10-15 04:12:43,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:12:43,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:12:44,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:12:44,770 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:12:45,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:12:45,292 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:12:45,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45 WrapperNode [2020-10-15 04:12:45,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:12:45,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:12:45,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:12:45,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:12:45,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... [2020-10-15 04:12:45,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... [2020-10-15 04:12:45,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... [2020-10-15 04:12:45,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... [2020-10-15 04:12:45,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... [2020-10-15 04:12:45,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... [2020-10-15 04:12:45,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... [2020-10-15 04:12:45,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:12:45,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:12:45,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:12:45,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:12:45,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:12:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:12:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:12:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:12:45,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:12:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:12:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:12:45,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:12:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:12:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:12:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:12:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:12:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:12:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:12:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:12:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:12:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:12:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:12:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:12:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:12:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:12:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:12:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:12:47,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:12:47,811 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:12:47,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:12:47 BoogieIcfgContainer [2020-10-15 04:12:47,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:12:47,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:12:47,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:12:47,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:12:47,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:12:43" (1/3) ... [2020-10-15 04:12:47,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27176418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:12:47, skipping insertion in model container [2020-10-15 04:12:47,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:12:45" (2/3) ... [2020-10-15 04:12:47,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27176418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:12:47, skipping insertion in model container [2020-10-15 04:12:47,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:12:47" (3/3) ... [2020-10-15 04:12:47,830 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:12:47,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:12:47,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:12:47,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:12:47,896 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:12:47,897 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:12:47,897 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:12:47,897 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:12:47,897 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:12:47,897 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:12:47,897 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:12:47,897 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:12:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states. [2020-10-15 04:12:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:12:47,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:47,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:47,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash -368782429, now seen corresponding path program 1 times [2020-10-15 04:12:47,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:47,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025610034] [2020-10-15 04:12:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:49,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:53,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:12:53,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:12:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 04:12:53,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:53,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:12:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-15 04:12:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-15 04:12:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:12:54,754 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:12:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:54,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:54,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 04:12:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:54,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:55,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025610034] [2020-10-15 04:12:55,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:55,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:12:55,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837771438] [2020-10-15 04:12:55,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:12:55,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:55,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:12:55,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:12:55,110 INFO L87 Difference]: Start difference. First operand 789 states. Second operand 4 states. [2020-10-15 04:12:55,607 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-15 04:13:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:00,386 INFO L93 Difference]: Finished difference Result 1489 states and 2621 transitions. [2020-10-15 04:13:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:00,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-15 04:13:00,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:00,421 INFO L225 Difference]: With dead ends: 1489 [2020-10-15 04:13:00,422 INFO L226 Difference]: Without dead ends: 1273 [2020-10-15 04:13:00,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-10-15 04:13:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1271. [2020-10-15 04:13:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-10-15 04:13:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1978 transitions. [2020-10-15 04:13:00,578 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1978 transitions. Word has length 326 [2020-10-15 04:13:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:00,584 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1978 transitions. [2020-10-15 04:13:00,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:13:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1978 transitions. [2020-10-15 04:13:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:13:00,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:00,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:00,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:13:00,598 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:00,599 INFO L82 PathProgramCache]: Analyzing trace with hash 420377409, now seen corresponding path program 1 times [2020-10-15 04:13:00,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:00,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896387776] [2020-10-15 04:13:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:02,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:05,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:13:05,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:13:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-15 04:13:05,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:05,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:13:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-15 04:13:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-15 04:13:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:06,564 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:13:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:06,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:06,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:06,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 04:13:06,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:06,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:06,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:06,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896387776] [2020-10-15 04:13:06,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:06,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:13:06,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613698415] [2020-10-15 04:13:06,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:13:06,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:06,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:13:06,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:13:06,889 INFO L87 Difference]: Start difference. First operand 1271 states and 1978 transitions. Second operand 4 states. [2020-10-15 04:13:07,540 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-15 04:13:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:12,113 INFO L93 Difference]: Finished difference Result 2607 states and 4089 transitions. [2020-10-15 04:13:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:12,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-15 04:13:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:12,131 INFO L225 Difference]: With dead ends: 2607 [2020-10-15 04:13:12,131 INFO L226 Difference]: Without dead ends: 2225 [2020-10-15 04:13:12,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2020-10-15 04:13:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2223. [2020-10-15 04:13:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2223 states. [2020-10-15 04:13:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3452 transitions. [2020-10-15 04:13:12,244 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3452 transitions. Word has length 326 [2020-10-15 04:13:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:12,246 INFO L479 AbstractCegarLoop]: Abstraction has 2223 states and 3452 transitions. [2020-10-15 04:13:12,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:13:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3452 transitions. [2020-10-15 04:13:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:13:12,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:12,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:12,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:13:12,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1550523160, now seen corresponding path program 1 times [2020-10-15 04:13:12,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:12,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953142359] [2020-10-15 04:13:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:13,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:14,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:17,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:17,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:13:17,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:13:17,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:13:17,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:17,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:13:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-15 04:13:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-15 04:13:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:18,090 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:13:18,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:18,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:18,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:13:18,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:18,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:18,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953142359] [2020-10-15 04:13:18,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:18,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:13:18,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695665340] [2020-10-15 04:13:18,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:13:18,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:13:18,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:13:18,361 INFO L87 Difference]: Start difference. First operand 2223 states and 3452 transitions. Second operand 4 states. [2020-10-15 04:13:18,774 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-15 04:13:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:23,242 INFO L93 Difference]: Finished difference Result 4715 states and 7386 transitions. [2020-10-15 04:13:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:23,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-15 04:13:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:23,264 INFO L225 Difference]: With dead ends: 4715 [2020-10-15 04:13:23,265 INFO L226 Difference]: Without dead ends: 4049 [2020-10-15 04:13:23,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2020-10-15 04:13:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 4047. [2020-10-15 04:13:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4047 states. [2020-10-15 04:13:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 6268 transitions. [2020-10-15 04:13:23,409 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 6268 transitions. Word has length 326 [2020-10-15 04:13:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:23,410 INFO L479 AbstractCegarLoop]: Abstraction has 4047 states and 6268 transitions. [2020-10-15 04:13:23,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:13:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 6268 transitions. [2020-10-15 04:13:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:13:23,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:23,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:23,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:13:23,424 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash 405693337, now seen corresponding path program 1 times [2020-10-15 04:13:23,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:23,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200681869] [2020-10-15 04:13:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:28,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:28,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:13:28,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:13:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 04:13:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:28,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-15 04:13:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:29,314 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:13:29,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:29,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:29,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:29,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:13:29,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:29,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:29,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200681869] [2020-10-15 04:13:29,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:29,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:29,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482279369] [2020-10-15 04:13:29,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:29,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:29,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:29,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:29,507 INFO L87 Difference]: Start difference. First operand 4047 states and 6268 transitions. Second operand 5 states. [2020-10-15 04:13:36,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:36,155 INFO L93 Difference]: Finished difference Result 12001 states and 18571 transitions. [2020-10-15 04:13:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:36,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-15 04:13:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:36,191 INFO L225 Difference]: With dead ends: 12001 [2020-10-15 04:13:36,191 INFO L226 Difference]: Without dead ends: 7967 [2020-10-15 04:13:36,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2020-10-15 04:13:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 7965. [2020-10-15 04:13:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7965 states. [2020-10-15 04:13:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7965 states to 7965 states and 12270 transitions. [2020-10-15 04:13:36,641 INFO L78 Accepts]: Start accepts. Automaton has 7965 states and 12270 transitions. Word has length 326 [2020-10-15 04:13:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:36,641 INFO L479 AbstractCegarLoop]: Abstraction has 7965 states and 12270 transitions. [2020-10-15 04:13:36,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7965 states and 12270 transitions. [2020-10-15 04:13:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-15 04:13:36,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:36,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:36,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:13:36,664 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:36,664 INFO L82 PathProgramCache]: Analyzing trace with hash -806411643, now seen corresponding path program 1 times [2020-10-15 04:13:36,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:36,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011988508] [2020-10-15 04:13:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:41,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:41,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-15 04:13:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:13:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 04:13:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:41,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-15 04:13:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:42,818 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:13:42,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:42,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:42,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:42,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:13:42,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:42,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:43,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011988508] [2020-10-15 04:13:43,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:43,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:43,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793171971] [2020-10-15 04:13:43,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:43,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:43,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:43,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:43,244 INFO L87 Difference]: Start difference. First operand 7965 states and 12270 transitions. Second operand 5 states. [2020-10-15 04:13:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:51,397 INFO L93 Difference]: Finished difference Result 23559 states and 36237 transitions. [2020-10-15 04:13:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:51,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-15 04:13:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:51,456 INFO L225 Difference]: With dead ends: 23559 [2020-10-15 04:13:51,456 INFO L226 Difference]: Without dead ends: 15682 [2020-10-15 04:13:51,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15682 states. [2020-10-15 04:13:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15682 to 15680. [2020-10-15 04:13:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15680 states. [2020-10-15 04:13:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15680 states to 15680 states and 24025 transitions. [2020-10-15 04:13:52,149 INFO L78 Accepts]: Start accepts. Automaton has 15680 states and 24025 transitions. Word has length 328 [2020-10-15 04:13:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:52,150 INFO L479 AbstractCegarLoop]: Abstraction has 15680 states and 24025 transitions. [2020-10-15 04:13:52,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 15680 states and 24025 transitions. [2020-10-15 04:13:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:13:52,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:52,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:52,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:13:52,187 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash 785831678, now seen corresponding path program 1 times [2020-10-15 04:13:52,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:52,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403207194] [2020-10-15 04:13:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:52,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:53,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:53,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:57,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:13:57,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:13:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-15 04:13:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:57,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-15 04:13:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:57,864 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:13:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:57,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 04:13:57,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:57,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:58,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403207194] [2020-10-15 04:13:58,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:58,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:58,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022251976] [2020-10-15 04:13:58,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:58,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:58,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:58,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:58,155 INFO L87 Difference]: Start difference. First operand 15680 states and 24025 transitions. Second operand 5 states. [2020-10-15 04:14:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:05,864 INFO L93 Difference]: Finished difference Result 46192 states and 70637 transitions. [2020-10-15 04:14:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:05,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-15 04:14:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:05,938 INFO L225 Difference]: With dead ends: 46192 [2020-10-15 04:14:05,938 INFO L226 Difference]: Without dead ends: 30654 [2020-10-15 04:14:05,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30654 states. [2020-10-15 04:14:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30654 to 30652. [2020-10-15 04:14:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30652 states. [2020-10-15 04:14:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30652 states to 30652 states and 46633 transitions. [2020-10-15 04:14:08,166 INFO L78 Accepts]: Start accepts. Automaton has 30652 states and 46633 transitions. Word has length 330 [2020-10-15 04:14:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:08,166 INFO L479 AbstractCegarLoop]: Abstraction has 30652 states and 46633 transitions. [2020-10-15 04:14:08,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 30652 states and 46633 transitions. [2020-10-15 04:14:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-15 04:14:08,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:08,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:14:08,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:14:08,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash 951686290, now seen corresponding path program 1 times [2020-10-15 04:14:08,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:08,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181841882] [2020-10-15 04:14:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:13,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:13,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-15 04:14:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:13,740 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:14:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:13,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:13,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:13,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:13,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:14:13,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:13,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:13,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:14:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:13,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181841882] [2020-10-15 04:14:13,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:13,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:14:13,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324426840] [2020-10-15 04:14:13,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:14:13,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:13,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:14:13,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:14:13,992 INFO L87 Difference]: Start difference. First operand 30652 states and 46633 transitions. Second operand 4 states. [2020-10-15 04:14:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:23,031 INFO L93 Difference]: Finished difference Result 90180 states and 136891 transitions. [2020-10-15 04:14:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:14:23,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-10-15 04:14:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:23,153 INFO L225 Difference]: With dead ends: 90180 [2020-10-15 04:14:23,153 INFO L226 Difference]: Without dead ends: 59874 [2020-10-15 04:14:23,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:14:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59874 states. [2020-10-15 04:14:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59874 to 59872. [2020-10-15 04:14:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59872 states. [2020-10-15 04:14:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59872 states to 59872 states and 90437 transitions. [2020-10-15 04:14:25,547 INFO L78 Accepts]: Start accepts. Automaton has 59872 states and 90437 transitions. Word has length 332 [2020-10-15 04:14:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:25,548 INFO L479 AbstractCegarLoop]: Abstraction has 59872 states and 90437 transitions. [2020-10-15 04:14:25,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:14:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 59872 states and 90437 transitions. [2020-10-15 04:14:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-15 04:14:25,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:25,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:14:25,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:14:25,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:25,605 INFO L82 PathProgramCache]: Analyzing trace with hash -501642729, now seen corresponding path program 1 times [2020-10-15 04:14:25,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:25,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740103948] [2020-10-15 04:14:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:26,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:27,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:27,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:30,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:30,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:30,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-15 04:14:30,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:14:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 04:14:30,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:30,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-15 04:14:30,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:31,144 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:14:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:31,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:31,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:31,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:14:31,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:31,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:31,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:31,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740103948] [2020-10-15 04:14:31,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:31,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:31,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993667986] [2020-10-15 04:14:31,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:31,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:31,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:31,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:31,311 INFO L87 Difference]: Start difference. First operand 59872 states and 90437 transitions. Second operand 5 states. [2020-10-15 04:14:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:41,619 INFO L93 Difference]: Finished difference Result 176763 states and 266505 transitions. [2020-10-15 04:14:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:41,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-15 04:14:41,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:41,876 INFO L225 Difference]: With dead ends: 176763 [2020-10-15 04:14:41,877 INFO L226 Difference]: Without dead ends: 117201 [2020-10-15 04:14:41,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117201 states. [2020-10-15 04:14:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117201 to 117199. [2020-10-15 04:14:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117199 states. [2020-10-15 04:14:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117199 states to 117199 states and 175679 transitions. [2020-10-15 04:14:48,802 INFO L78 Accepts]: Start accepts. Automaton has 117199 states and 175679 transitions. Word has length 332 [2020-10-15 04:14:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:48,802 INFO L479 AbstractCegarLoop]: Abstraction has 117199 states and 175679 transitions. [2020-10-15 04:14:48,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 117199 states and 175679 transitions. [2020-10-15 04:14:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-15 04:14:48,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:48,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:14:48,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:14:48,906 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash -765185555, now seen corresponding path program 1 times [2020-10-15 04:14:48,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:48,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344726673] [2020-10-15 04:14:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:51,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:52,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:54,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:54,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-15 04:14:54,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 04:14:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 04:14:54,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:54,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-15 04:14:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:54,509 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:14:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:54,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:54,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:54,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:54,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:14:54,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:54,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:54,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344726673] [2020-10-15 04:14:54,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:54,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:54,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308630296] [2020-10-15 04:14:54,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:54,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:54,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:54,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:54,654 INFO L87 Difference]: Start difference. First operand 117199 states and 175679 transitions. Second operand 5 states. [2020-10-15 04:15:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:11,843 INFO L93 Difference]: Finished difference Result 345951 states and 517499 transitions. [2020-10-15 04:15:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:15:11,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-15 04:15:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:12,156 INFO L225 Difference]: With dead ends: 345951 [2020-10-15 04:15:12,157 INFO L226 Difference]: Without dead ends: 228945 [2020-10-15 04:15:12,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:12,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228945 states. [2020-10-15 04:15:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228945 to 228943. [2020-10-15 04:15:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228943 states. [2020-10-15 04:15:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228943 states to 228943 states and 340199 transitions. [2020-10-15 04:15:23,938 INFO L78 Accepts]: Start accepts. Automaton has 228943 states and 340199 transitions. Word has length 334 [2020-10-15 04:15:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:15:23,939 INFO L479 AbstractCegarLoop]: Abstraction has 228943 states and 340199 transitions. [2020-10-15 04:15:23,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:15:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 228943 states and 340199 transitions. [2020-10-15 04:15:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-15 04:15:24,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:24,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:15:24,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:15:24,076 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:24,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:24,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1784903283, now seen corresponding path program 1 times [2020-10-15 04:15:24,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:24,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145746674] [2020-10-15 04:15:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:25,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:31,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:31,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-15 04:15:31,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:15:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7047 [2020-10-15 04:15:31,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:31,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:15:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:15:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-15 04:15:31,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:15:31,650 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:15:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:31,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:31,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:31,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:15:31,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:31,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:15:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:15:31,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145746674] [2020-10-15 04:15:31,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:31,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:15:31,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256313836] [2020-10-15 04:15:31,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:15:31,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:15:31,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:15:31,782 INFO L87 Difference]: Start difference. First operand 228943 states and 340199 transitions. Second operand 5 states. [2020-10-15 04:15:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:48,034 INFO L93 Difference]: Finished difference Result 462923 states and 687857 transitions. [2020-10-15 04:15:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:15:48,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-15 04:15:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:48,308 INFO L225 Difference]: With dead ends: 462923 [2020-10-15 04:15:48,308 INFO L226 Difference]: Without dead ends: 234397 [2020-10-15 04:15:48,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234397 states. [2020-10-15 04:16:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234397 to 229327. [2020-10-15 04:16:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229327 states. [2020-10-15 04:16:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229327 states to 229327 states and 340791 transitions. [2020-10-15 04:16:03,834 INFO L78 Accepts]: Start accepts. Automaton has 229327 states and 340791 transitions. Word has length 336 [2020-10-15 04:16:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:03,834 INFO L479 AbstractCegarLoop]: Abstraction has 229327 states and 340791 transitions. [2020-10-15 04:16:03,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 229327 states and 340791 transitions. [2020-10-15 04:16:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-15 04:16:04,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:04,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:04,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:16:04,487 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:04,488 INFO L82 PathProgramCache]: Analyzing trace with hash -287613256, now seen corresponding path program 1 times [2020-10-15 04:16:04,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:04,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695706746] [2020-10-15 04:16:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:04,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:05,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking...