/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:03:26,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:03:26,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:03:26,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:03:26,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:03:26,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:03:26,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:03:26,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:03:26,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:03:26,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:03:26,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:03:26,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:03:26,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:03:26,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:03:26,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:03:26,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:03:26,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:03:26,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:03:26,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:03:26,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:03:26,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:03:26,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:03:26,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:03:26,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:03:26,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:03:26,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:03:26,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:03:26,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:03:26,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:03:26,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:03:26,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:03:26,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:03:26,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:03:26,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:03:26,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:03:26,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:03:26,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:03:26,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:03:26,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:03:26,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:03:26,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:03:26,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:03:26,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:03:26,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:03:26,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:03:26,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:03:26,298 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:03:26,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:03:26,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:03:26,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:03:26,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:03:26,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:03:26,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:03:26,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:03:26,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:03:26,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:03:26,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:03:26,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:03:26,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:03:26,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:03:26,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:03:26,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:03:26,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:03:26,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:03:26,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:03:26,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:03:26,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:03:26,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:03:26,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:03:26,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:03:26,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:03:26,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:03:26,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:03:26,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:03:26,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:03:26,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:03:26,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:03:26,736 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:03:26,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/553c9e9a6/737e2b518f844aa49dab99156e40706e/FLAGccf43fe20 [2020-10-15 03:03:27,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:03:27,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:03:27,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/553c9e9a6/737e2b518f844aa49dab99156e40706e/FLAGccf43fe20 [2020-10-15 03:03:27,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/553c9e9a6/737e2b518f844aa49dab99156e40706e [2020-10-15 03:03:27,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:03:27,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:03:27,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:03:27,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:03:27,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:03:27,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:27" (1/1) ... [2020-10-15 03:03:27,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:27, skipping insertion in model container [2020-10-15 03:03:27,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:27" (1/1) ... [2020-10-15 03:03:27,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:03:27,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:03:28,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:03:28,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:03:29,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:03:29,253 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:03:29,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29 WrapperNode [2020-10-15 03:03:29,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:03:29,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:03:29,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:03:29,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:03:29,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... [2020-10-15 03:03:29,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... [2020-10-15 03:03:29,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... [2020-10-15 03:03:29,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... [2020-10-15 03:03:29,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... [2020-10-15 03:03:29,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... [2020-10-15 03:03:29,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... [2020-10-15 03:03:29,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:03:29,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:03:29,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:03:29,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:03:29,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:03:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:03:29,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:03:29,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:03:29,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:03:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:03:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:03:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:03:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:03:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:03:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:03:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:03:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:03:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:03:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:03:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:03:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:03:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:03:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:03:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:03:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:03:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:03:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:03:32,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:03:32,130 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:03:32,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:32 BoogieIcfgContainer [2020-10-15 03:03:32,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:03:32,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:03:32,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:03:32,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:03:32,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:03:27" (1/3) ... [2020-10-15 03:03:32,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620126a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:32, skipping insertion in model container [2020-10-15 03:03:32,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:29" (2/3) ... [2020-10-15 03:03:32,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620126a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:32, skipping insertion in model container [2020-10-15 03:03:32,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:32" (3/3) ... [2020-10-15 03:03:32,159 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:03:32,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:03:32,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 03:03:32,207 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 03:03:32,246 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:03:32,246 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:03:32,246 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:03:32,247 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:03:32,247 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:03:32,247 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:03:32,247 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:03:32,247 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:03:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states. [2020-10-15 03:03:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-15 03:03:32,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:32,305 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] [2020-10-15 03:03:32,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:32,312 INFO L82 PathProgramCache]: Analyzing trace with hash -785289919, now seen corresponding path program 1 times [2020-10-15 03:03:32,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:32,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372149340] [2020-10-15 03:03:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:38,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:38,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-15 03:03:38,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:03:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:03:38,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:38,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-15 03:03:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:03:38,988 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:03:38,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:39,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:39,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:03:39,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:39,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:39,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:39,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372149340] [2020-10-15 03:03:39,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:39,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:39,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073074593] [2020-10-15 03:03:39,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:39,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:39,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:39,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:39,283 INFO L87 Difference]: Start difference. First operand 632 states. Second operand 5 states. [2020-10-15 03:03:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:47,339 INFO L93 Difference]: Finished difference Result 1829 states and 3279 transitions. [2020-10-15 03:03:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:03:47,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-15 03:03:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:47,370 INFO L225 Difference]: With dead ends: 1829 [2020-10-15 03:03:47,370 INFO L226 Difference]: Without dead ends: 1228 [2020-10-15 03:03:47,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:03:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2020-10-15 03:03:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1211. [2020-10-15 03:03:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-10-15 03:03:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1884 transitions. [2020-10-15 03:03:47,536 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1884 transitions. Word has length 239 [2020-10-15 03:03:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:47,537 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1884 transitions. [2020-10-15 03:03:47,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1884 transitions. [2020-10-15 03:03:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-15 03:03:47,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:47,546 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] [2020-10-15 03:03:47,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:03:47,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1615698364, now seen corresponding path program 1 times [2020-10-15 03:03:47,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:47,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357083433] [2020-10-15 03:03:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:51,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:52,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:52,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-15 03:03:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:03:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 03:03:52,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:52,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:52,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:52,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:52,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 03:03:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:53,350 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:03:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:53,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:53,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:03:53,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:53,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:03:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:53,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357083433] [2020-10-15 03:03:53,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:53,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:53,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964924045] [2020-10-15 03:03:53,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:53,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:53,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:53,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:53,671 INFO L87 Difference]: Start difference. First operand 1211 states and 1884 transitions. Second operand 5 states. [2020-10-15 03:04:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:01,106 INFO L93 Difference]: Finished difference Result 3463 states and 5355 transitions. [2020-10-15 03:04:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:01,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-15 03:04:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:01,129 INFO L225 Difference]: With dead ends: 3463 [2020-10-15 03:04:01,130 INFO L226 Difference]: Without dead ends: 2334 [2020-10-15 03:04:01,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:01,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2020-10-15 03:04:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2274. [2020-10-15 03:04:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2274 states. [2020-10-15 03:04:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3504 transitions. [2020-10-15 03:04:01,281 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3504 transitions. Word has length 241 [2020-10-15 03:04:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:01,282 INFO L479 AbstractCegarLoop]: Abstraction has 2274 states and 3504 transitions. [2020-10-15 03:04:01,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3504 transitions. [2020-10-15 03:04:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-15 03:04:01,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:01,292 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] [2020-10-15 03:04:01,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:04:01,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:01,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:01,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1409042849, now seen corresponding path program 1 times [2020-10-15 03:04:01,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:01,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682791669] [2020-10-15 03:04:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:01,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:03,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:03,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:04,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:06,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:06,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-15 03:04:06,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:04:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 03:04:06,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:06,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 03:04:06,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:07,024 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:04:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:07,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:07,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:07,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:04:07,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:07,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:07,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:07,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682791669] [2020-10-15 03:04:07,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:07,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:07,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026654926] [2020-10-15 03:04:07,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:07,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:07,286 INFO L87 Difference]: Start difference. First operand 2274 states and 3504 transitions. Second operand 5 states. [2020-10-15 03:04:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:13,584 INFO L93 Difference]: Finished difference Result 6624 states and 10175 transitions. [2020-10-15 03:04:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:13,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-15 03:04:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:13,619 INFO L225 Difference]: With dead ends: 6624 [2020-10-15 03:04:13,619 INFO L226 Difference]: Without dead ends: 4424 [2020-10-15 03:04:13,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4424 states. [2020-10-15 03:04:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4424 to 4364. [2020-10-15 03:04:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4364 states. [2020-10-15 03:04:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 6668 transitions. [2020-10-15 03:04:13,858 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 6668 transitions. Word has length 243 [2020-10-15 03:04:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:13,860 INFO L479 AbstractCegarLoop]: Abstraction has 4364 states and 6668 transitions. [2020-10-15 03:04:13,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 6668 transitions. [2020-10-15 03:04:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-15 03:04:13,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:13,875 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] [2020-10-15 03:04:13,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:04:13,875 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:13,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1405161223, now seen corresponding path program 1 times [2020-10-15 03:04:13,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:13,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302690141] [2020-10-15 03:04:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:14,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:15,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:16,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:18,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:18,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-15 03:04:18,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:04:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:04:18,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:18,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:04:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:04:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:04:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:19,527 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:04:19,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:19,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:04:19,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:19,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:04:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:19,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302690141] [2020-10-15 03:04:19,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:19,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:04:19,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161122335] [2020-10-15 03:04:19,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:04:19,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:19,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:04:19,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:04:19,763 INFO L87 Difference]: Start difference. First operand 4364 states and 6668 transitions. Second operand 4 states. [2020-10-15 03:04:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:27,051 INFO L93 Difference]: Finished difference Result 12548 states and 19091 transitions. [2020-10-15 03:04:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:04:27,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 245 [2020-10-15 03:04:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:27,104 INFO L225 Difference]: With dead ends: 12548 [2020-10-15 03:04:27,105 INFO L226 Difference]: Without dead ends: 8496 [2020-10-15 03:04:27,114 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 03:04:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8496 states. [2020-10-15 03:04:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8496 to 8436. [2020-10-15 03:04:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8436 states. [2020-10-15 03:04:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8436 states to 8436 states and 12799 transitions. [2020-10-15 03:04:27,514 INFO L78 Accepts]: Start accepts. Automaton has 8436 states and 12799 transitions. Word has length 245 [2020-10-15 03:04:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:27,515 INFO L479 AbstractCegarLoop]: Abstraction has 8436 states and 12799 transitions. [2020-10-15 03:04:27,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:04:27,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8436 states and 12799 transitions. [2020-10-15 03:04:27,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-15 03:04:27,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:27,535 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] [2020-10-15 03:04:27,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:04:27,535 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:27,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:27,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1613969378, now seen corresponding path program 1 times [2020-10-15 03:04:27,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:27,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006657220] [2020-10-15 03:04:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:27,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:28,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:32,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:32,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-15 03:04:32,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:04:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:04:32,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:32,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:32,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:32,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 03:04:32,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:33,279 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:04:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:33,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:33,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:33,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:04:33,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:33,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:33,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:33,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006657220] [2020-10-15 03:04:33,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:33,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:33,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224297327] [2020-10-15 03:04:33,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:33,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:33,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:33,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:33,470 INFO L87 Difference]: Start difference. First operand 8436 states and 12799 transitions. Second operand 5 states. [2020-10-15 03:04:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:40,788 INFO L93 Difference]: Finished difference Result 24446 states and 36943 transitions. [2020-10-15 03:04:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:40,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-15 03:04:40,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:40,846 INFO L225 Difference]: With dead ends: 24446 [2020-10-15 03:04:40,846 INFO L226 Difference]: Without dead ends: 16586 [2020-10-15 03:04:40,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16586 states. [2020-10-15 03:04:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16586 to 16538. [2020-10-15 03:04:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16538 states. [2020-10-15 03:04:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16538 states to 16538 states and 24921 transitions. [2020-10-15 03:04:41,840 INFO L78 Accepts]: Start accepts. Automaton has 16538 states and 24921 transitions. Word has length 245 [2020-10-15 03:04:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:41,840 INFO L479 AbstractCegarLoop]: Abstraction has 16538 states and 24921 transitions. [2020-10-15 03:04:41,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16538 states and 24921 transitions. [2020-10-15 03:04:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-15 03:04:41,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:41,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:41,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:04:41,879 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1796143559, now seen corresponding path program 1 times [2020-10-15 03:04:41,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:41,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13644229] [2020-10-15 03:04:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:42,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:46,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:46,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-15 03:04:46,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:04:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:04:46,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:46,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:46,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 03:04:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:47,570 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:04:47,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:47,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:47,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:04:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:47,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:47,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:47,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13644229] [2020-10-15 03:04:47,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:47,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:47,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752020034] [2020-10-15 03:04:47,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:47,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:47,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:47,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:47,819 INFO L87 Difference]: Start difference. First operand 16538 states and 24921 transitions. Second operand 5 states. [2020-10-15 03:04:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:55,325 INFO L93 Difference]: Finished difference Result 48721 states and 73269 transitions. [2020-10-15 03:04:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:55,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-15 03:04:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:55,460 INFO L225 Difference]: With dead ends: 48721 [2020-10-15 03:04:55,460 INFO L226 Difference]: Without dead ends: 32335 [2020-10-15 03:04:55,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32335 states. [2020-10-15 03:04:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32335 to 32320. [2020-10-15 03:04:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32320 states. [2020-10-15 03:04:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32320 states to 32320 states and 48279 transitions. [2020-10-15 03:04:58,219 INFO L78 Accepts]: Start accepts. Automaton has 32320 states and 48279 transitions. Word has length 247 [2020-10-15 03:04:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:58,220 INFO L479 AbstractCegarLoop]: Abstraction has 32320 states and 48279 transitions. [2020-10-15 03:04:58,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 32320 states and 48279 transitions. [2020-10-15 03:04:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-15 03:04:58,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:58,285 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] [2020-10-15 03:04:58,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:04:58,285 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:58,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1322123867, now seen corresponding path program 1 times [2020-10-15 03:04:58,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:58,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275969959] [2020-10-15 03:04:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:03,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:03,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-15 03:05:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:05:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:05:03,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:03,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-15 03:05:03,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:03,918 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:05:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:03,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:03,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:03,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:05:03,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:03,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:04,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275969959] [2020-10-15 03:05:04,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:04,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:04,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963689271] [2020-10-15 03:05:04,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:04,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:04,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:04,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:04,202 INFO L87 Difference]: Start difference. First operand 32320 states and 48279 transitions. Second operand 5 states. [2020-10-15 03:05:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:14,773 INFO L93 Difference]: Finished difference Result 93973 states and 139875 transitions. [2020-10-15 03:05:14,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:14,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-15 03:05:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:14,919 INFO L225 Difference]: With dead ends: 93973 [2020-10-15 03:05:14,919 INFO L226 Difference]: Without dead ends: 63167 [2020-10-15 03:05:14,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:05:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63167 states. [2020-10-15 03:05:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63167 to 63154. [2020-10-15 03:05:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63154 states. [2020-10-15 03:05:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63154 states to 63154 states and 93621 transitions. [2020-10-15 03:05:19,158 INFO L78 Accepts]: Start accepts. Automaton has 63154 states and 93621 transitions. Word has length 249 [2020-10-15 03:05:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:19,158 INFO L479 AbstractCegarLoop]: Abstraction has 63154 states and 93621 transitions. [2020-10-15 03:05:19,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:19,159 INFO L276 IsEmpty]: Start isEmpty. Operand 63154 states and 93621 transitions. [2020-10-15 03:05:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 03:05:19,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:19,212 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] [2020-10-15 03:05:19,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:05:19,213 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:19,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:19,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1010094790, now seen corresponding path program 1 times [2020-10-15 03:05:19,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:19,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117072312] [2020-10-15 03:05:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:19,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:25,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-15 03:05:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:05:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5779 [2020-10-15 03:05:25,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:25,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 03:05:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:25,562 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:05:25,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:25,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:25,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:05:25,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:25,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:25,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117072312] [2020-10-15 03:05:25,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:25,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:25,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209801405] [2020-10-15 03:05:25,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:25,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:25,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:25,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:25,678 INFO L87 Difference]: Start difference. First operand 63154 states and 93621 transitions. Second operand 5 states. [2020-10-15 03:05:40,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:40,958 INFO L93 Difference]: Finished difference Result 183529 states and 270989 transitions. [2020-10-15 03:05:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:40,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-15 03:05:40,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:41,144 INFO L225 Difference]: With dead ends: 183529 [2020-10-15 03:05:41,145 INFO L226 Difference]: Without dead ends: 123409 [2020-10-15 03:05:41,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:05:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123409 states. [2020-10-15 03:05:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123409 to 123319. [2020-10-15 03:05:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123319 states. [2020-10-15 03:05:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123319 states to 123319 states and 181265 transitions. [2020-10-15 03:05:51,787 INFO L78 Accepts]: Start accepts. Automaton has 123319 states and 181265 transitions. Word has length 251 [2020-10-15 03:05:51,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:51,788 INFO L479 AbstractCegarLoop]: Abstraction has 123319 states and 181265 transitions. [2020-10-15 03:05:51,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 123319 states and 181265 transitions. [2020-10-15 03:05:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-15 03:05:52,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:52,278 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] [2020-10-15 03:05:52,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:05:52,279 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:52,279 INFO L82 PathProgramCache]: Analyzing trace with hash 371827391, now seen corresponding path program 1 times [2020-10-15 03:05:52,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:52,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674258128] [2020-10-15 03:05:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:52,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:59,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 03:05:59,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:05:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6765 [2020-10-15 03:05:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:59,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:05:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:05:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:05:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:59,530 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:05:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:59,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:59,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:59,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:05:59,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:59,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:59,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674258128] [2020-10-15 03:05:59,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:59,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:05:59,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880620126] [2020-10-15 03:05:59,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:05:59,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:59,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:05:59,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:05:59,622 INFO L87 Difference]: Start difference. First operand 123319 states and 181265 transitions. Second operand 4 states. [2020-10-15 03:06:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:23,583 INFO L93 Difference]: Finished difference Result 351063 states and 511975 transitions. [2020-10-15 03:06:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:06:23,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2020-10-15 03:06:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:23,971 INFO L225 Difference]: With dead ends: 351063 [2020-10-15 03:06:23,971 INFO L226 Difference]: Without dead ends: 239973 [2020-10-15 03:06:24,079 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 03:06:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239973 states. [2020-10-15 03:06:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239973 to 239731. [2020-10-15 03:06:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239731 states. [2020-10-15 03:06:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239731 states to 239731 states and 348971 transitions. [2020-10-15 03:06:47,709 INFO L78 Accepts]: Start accepts. Automaton has 239731 states and 348971 transitions. Word has length 253 [2020-10-15 03:06:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:47,709 INFO L479 AbstractCegarLoop]: Abstraction has 239731 states and 348971 transitions. [2020-10-15 03:06:47,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:06:47,709 INFO L276 IsEmpty]: Start isEmpty. Operand 239731 states and 348971 transitions. [2020-10-15 03:06:47,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-15 03:06:47,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:47,908 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] [2020-10-15 03:06:47,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:06:47,908 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash -902411302, now seen corresponding path program 1 times [2020-10-15 03:06:47,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:47,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158750268] [2020-10-15 03:06:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:47,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:52,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:52,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 03:06:52,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:06:52,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:06:52,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:52,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:06:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:06:52,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 03:06:52,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:53,544 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 03:06:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:53,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:53,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:53,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:53,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:06:53,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:53,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:53,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:53,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158750268] [2020-10-15 03:06:53,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:53,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:06:53,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048164598] [2020-10-15 03:06:53,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:06:53,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:53,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:06:53,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:06:53,693 INFO L87 Difference]: Start difference. First operand 239731 states and 348971 transitions. Second operand 4 states.