/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=BIGGEST --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.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:21:02,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:21:02,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:21:02,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:21:02,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:21:02,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:21:02,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:21:02,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:21:02,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:21:02,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:21:02,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:21:02,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:21:02,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:21:02,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:21:02,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:21:02,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:21:02,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:21:02,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:21:02,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:21:02,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:21:02,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:21:02,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:21:02,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:21:02,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:21:02,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:21:02,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:21:02,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:21:02,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:21:02,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:21:02,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:21:02,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:21:02,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:21:02,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:21:02,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:21:02,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:21:02,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:21:02,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:21:02,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:21:02,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:21:02,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:21:02,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:21:02,219 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 [2020-10-12 19:21:02,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:21:02,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:21:02,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:21:02,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:21:02,244 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:21:02,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:21:02,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:21:02,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:21:02,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:21:02,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:21:02,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:21:02,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:21:02,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:21:02,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:21:02,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:21:02,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:21:02,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:21:02,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:21:02,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:21:02,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:21:02,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:21:02,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:21:02,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:21:02,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:21:02,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:21:02,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:21:02,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:21:02,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:21:02,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:21:02,249 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:21:02,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:21:02,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:21:02,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:21:02,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:21:02,575 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:21:02,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:21:02,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/949f9625c/7aff3b00675646408cb27e3192b7a374/FLAG7b5dcea07 [2020-10-12 19:21:03,222 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:21:03,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:21:03,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/949f9625c/7aff3b00675646408cb27e3192b7a374/FLAG7b5dcea07 [2020-10-12 19:21:03,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/949f9625c/7aff3b00675646408cb27e3192b7a374 [2020-10-12 19:21:03,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:21:03,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:21:03,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:21:03,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:21:03,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:21:03,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:21:03" (1/1) ... [2020-10-12 19:21:03,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321ed854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:03, skipping insertion in model container [2020-10-12 19:21:03,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:21:03" (1/1) ... [2020-10-12 19:21:03,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:21:03,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:21:04,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:21:04,529 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:21:05,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:21:05,103 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:21:05,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05 WrapperNode [2020-10-12 19:21:05,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:21:05,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:21:05,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:21:05,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:21:05,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (1/1) ... [2020-10-12 19:21:05,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (1/1) ... [2020-10-12 19:21:05,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (1/1) ... [2020-10-12 19:21:05,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (1/1) ... [2020-10-12 19:21:05,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (1/1) ... [2020-10-12 19:21:05,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (1/1) ... [2020-10-12 19:21:05,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (1/1) ... [2020-10-12 19:21:05,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:21:05,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:21:05,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:21:05,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:21:05,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (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 [2020-10-12 19:21:05,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:21:05,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:21:05,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:21:05,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:21:05,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:21:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:21:05,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:21:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:21:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:21:05,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:21:05,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:21:05,386 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:21:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:21:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:21:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:21:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:21:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:21:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:21:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:21:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:21:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:21:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:21:08,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:21:08,125 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:21:08,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:21:08 BoogieIcfgContainer [2020-10-12 19:21:08,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:21:08,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:21:08,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:21:08,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:21:08,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:21:03" (1/3) ... [2020-10-12 19:21:08,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8cab87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:21:08, skipping insertion in model container [2020-10-12 19:21:08,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:21:05" (2/3) ... [2020-10-12 19:21:08,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8cab87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:21:08, skipping insertion in model container [2020-10-12 19:21:08,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:21:08" (3/3) ... [2020-10-12 19:21:08,153 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:21:08,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:21:08,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:21:08,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:21:08,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:21:08,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:21:08,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:21:08,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:21:08,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:21:08,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:21:08,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:21:08,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:21:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states. [2020-10-12 19:21:08,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-12 19:21:08,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:08,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:08,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:08,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:08,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1814402913, now seen corresponding path program 1 times [2020-10-12 19:21:08,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:08,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014466008] [2020-10-12 19:21:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:12,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:13,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:14,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:14,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-12 19:21:14,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:21:14,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:14,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:21:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:21:15,014 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:21:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:15,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014466008] [2020-10-12 19:21:15,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:15,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:15,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321793912] [2020-10-12 19:21:15,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:15,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:15,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:15,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:15,280 INFO L87 Difference]: Start difference. First operand 721 states. Second operand 5 states. [2020-10-12 19:21:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:23,356 INFO L93 Difference]: Finished difference Result 2093 states and 3736 transitions. [2020-10-12 19:21:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:21:23,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-12 19:21:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:23,387 INFO L225 Difference]: With dead ends: 2093 [2020-10-12 19:21:23,387 INFO L226 Difference]: Without dead ends: 1391 [2020-10-12 19:21:23,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-10-12 19:21:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1389. [2020-10-12 19:21:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2020-10-12 19:21:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2136 transitions. [2020-10-12 19:21:23,531 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2136 transitions. Word has length 310 [2020-10-12 19:21:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:23,532 INFO L479 AbstractCegarLoop]: Abstraction has 1389 states and 2136 transitions. [2020-10-12 19:21:23,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2136 transitions. [2020-10-12 19:21:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 19:21:23,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:23,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:23,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:21:23,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash 359048774, now seen corresponding path program 1 times [2020-10-12 19:21:23,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:23,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111461443] [2020-10-12 19:21:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:24,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:28,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:28,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 19:21:28,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:28,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:21:28,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:21:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:29,410 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:29,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:29,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:29,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:21:29,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:29,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111461443] [2020-10-12 19:21:29,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:29,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:29,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130920543] [2020-10-12 19:21:29,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:29,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:29,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:29,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:29,662 INFO L87 Difference]: Start difference. First operand 1389 states and 2136 transitions. Second operand 5 states. [2020-10-12 19:21:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:37,961 INFO L93 Difference]: Finished difference Result 4034 states and 6186 transitions. [2020-10-12 19:21:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:37,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-12 19:21:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:37,988 INFO L225 Difference]: With dead ends: 4034 [2020-10-12 19:21:37,988 INFO L226 Difference]: Without dead ends: 2695 [2020-10-12 19:21:37,994 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 [2020-10-12 19:21:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2020-10-12 19:21:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2693. [2020-10-12 19:21:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2693 states. [2020-10-12 19:21:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 4106 transitions. [2020-10-12 19:21:38,134 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 4106 transitions. Word has length 312 [2020-10-12 19:21:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:38,136 INFO L479 AbstractCegarLoop]: Abstraction has 2693 states and 4106 transitions. [2020-10-12 19:21:38,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 4106 transitions. [2020-10-12 19:21:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-12 19:21:38,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:38,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:38,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:21:38,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:38,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1964276806, now seen corresponding path program 1 times [2020-10-12 19:21:38,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:38,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362607536] [2020-10-12 19:21:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:38,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:41,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:42,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:43,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 19:21:43,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 19:21:43,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 19:21:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:21:43,908 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:43,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:43,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:43,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:43,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:21:43,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:21:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:44,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362607536] [2020-10-12 19:21:44,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:44,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:44,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688537801] [2020-10-12 19:21:44,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:44,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:44,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:44,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:44,181 INFO L87 Difference]: Start difference. First operand 2693 states and 4106 transitions. Second operand 5 states. [2020-10-12 19:21:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:50,991 INFO L93 Difference]: Finished difference Result 7837 states and 11913 transitions. [2020-10-12 19:21:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:50,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-12 19:21:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:51,022 INFO L225 Difference]: With dead ends: 7837 [2020-10-12 19:21:51,022 INFO L226 Difference]: Without dead ends: 5267 [2020-10-12 19:21:51,029 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 [2020-10-12 19:21:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5267 states. [2020-10-12 19:21:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5267 to 5265. [2020-10-12 19:21:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5265 states. [2020-10-12 19:21:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 7959 transitions. [2020-10-12 19:21:51,284 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 7959 transitions. Word has length 314 [2020-10-12 19:21:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:51,286 INFO L479 AbstractCegarLoop]: Abstraction has 5265 states and 7959 transitions. [2020-10-12 19:21:51,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 7959 transitions. [2020-10-12 19:21:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-12 19:21:51,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:51,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:51,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:21:51,302 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:51,302 INFO L82 PathProgramCache]: Analyzing trace with hash -414910065, now seen corresponding path program 1 times [2020-10-12 19:21:51,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:51,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471713477] [2020-10-12 19:21:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:52,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:56,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:56,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 19:21:56,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:56,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:21:56,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 19:21:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:56,945 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:21:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:56,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:56,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:56,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:56,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:21:56,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:56,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:56,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:57,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471713477] [2020-10-12 19:21:57,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:57,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:57,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227037969] [2020-10-12 19:21:57,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:57,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:57,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:57,099 INFO L87 Difference]: Start difference. First operand 5265 states and 7959 transitions. Second operand 5 states. [2020-10-12 19:22:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:03,743 INFO L93 Difference]: Finished difference Result 15473 states and 23345 transitions. [2020-10-12 19:22:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:03,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-12 19:22:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:03,785 INFO L225 Difference]: With dead ends: 15473 [2020-10-12 19:22:03,785 INFO L226 Difference]: Without dead ends: 10291 [2020-10-12 19:22:03,798 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 [2020-10-12 19:22:03,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10291 states. [2020-10-12 19:22:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10291 to 10289. [2020-10-12 19:22:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10289 states. [2020-10-12 19:22:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 15419 transitions. [2020-10-12 19:22:04,319 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 15419 transitions. Word has length 316 [2020-10-12 19:22:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:04,319 INFO L479 AbstractCegarLoop]: Abstraction has 10289 states and 15419 transitions. [2020-10-12 19:22:04,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 15419 transitions. [2020-10-12 19:22:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-12 19:22:04,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:04,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:22:04,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:22:04,347 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash -461755144, now seen corresponding path program 1 times [2020-10-12 19:22:04,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:04,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890621001] [2020-10-12 19:22:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:09,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:09,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 19:22:09,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:22:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-12 19:22:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:22:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:22:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 19:22:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 19:22:10,345 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:22:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:10,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:10,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:10,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:22:10,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:10,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890621001] [2020-10-12 19:22:10,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:10,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:22:10,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652215910] [2020-10-12 19:22:10,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:22:10,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:10,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:22:10,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:22:10,465 INFO L87 Difference]: Start difference. First operand 10289 states and 15419 transitions. Second operand 5 states. [2020-10-12 19:22:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:17,065 INFO L93 Difference]: Finished difference Result 30101 states and 45013 transitions. [2020-10-12 19:22:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:17,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-12 19:22:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:17,115 INFO L225 Difference]: With dead ends: 30101 [2020-10-12 19:22:17,115 INFO L226 Difference]: Without dead ends: 20083 [2020-10-12 19:22:17,138 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 [2020-10-12 19:22:17,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2020-10-12 19:22:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 20081. [2020-10-12 19:22:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20081 states. [2020-10-12 19:22:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20081 states to 20081 states and 29813 transitions. [2020-10-12 19:22:18,816 INFO L78 Accepts]: Start accepts. Automaton has 20081 states and 29813 transitions. Word has length 318 [2020-10-12 19:22:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:18,817 INFO L479 AbstractCegarLoop]: Abstraction has 20081 states and 29813 transitions. [2020-10-12 19:22:18,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:18,817 INFO L276 IsEmpty]: Start isEmpty. Operand 20081 states and 29813 transitions. [2020-10-12 19:22:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 19:22:18,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:18,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:22:18,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:22:18,861 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash 212711123, now seen corresponding path program 1 times [2020-10-12 19:22:18,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:18,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575525458] [2020-10-12 19:22:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:21,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:22,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:23,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:23,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 19:22:23,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:22:23,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:22:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:22:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:22:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 19:22:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:22:24,545 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:22:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:24,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:24,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:22:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:24,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575525458] [2020-10-12 19:22:24,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:24,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:22:24,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493056931] [2020-10-12 19:22:24,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:22:24,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:24,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:22:24,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:22:24,733 INFO L87 Difference]: Start difference. First operand 20081 states and 29813 transitions. Second operand 5 states. [2020-10-12 19:22:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:31,821 INFO L93 Difference]: Finished difference Result 58615 states and 86837 transitions. [2020-10-12 19:22:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:31,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-12 19:22:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:31,918 INFO L225 Difference]: With dead ends: 58615 [2020-10-12 19:22:31,919 INFO L226 Difference]: Without dead ends: 39051 [2020-10-12 19:22:31,965 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 [2020-10-12 19:22:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39051 states. [2020-10-12 19:22:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39051 to 39049. [2020-10-12 19:22:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39049 states. [2020-10-12 19:22:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39049 states to 39049 states and 57429 transitions. [2020-10-12 19:22:33,665 INFO L78 Accepts]: Start accepts. Automaton has 39049 states and 57429 transitions. Word has length 320 [2020-10-12 19:22:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:33,665 INFO L479 AbstractCegarLoop]: Abstraction has 39049 states and 57429 transitions. [2020-10-12 19:22:33,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 39049 states and 57429 transitions. [2020-10-12 19:22:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 19:22:33,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:33,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:22:33,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:22:33,745 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:33,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1780964290, now seen corresponding path program 1 times [2020-10-12 19:22:33,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:33,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944897279] [2020-10-12 19:22:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:34,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 19:22:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:22:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:22:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:22:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 19:22:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:22:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:39,408 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:22:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:39,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:39,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:39,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:39,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:22:39,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:39,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944897279] [2020-10-12 19:22:39,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:39,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:22:39,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977102148] [2020-10-12 19:22:39,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:22:39,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:22:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:22:39,627 INFO L87 Difference]: Start difference. First operand 39049 states and 57429 transitions. Second operand 5 states. [2020-10-12 19:22:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:47,169 INFO L93 Difference]: Finished difference Result 107037 states and 156281 transitions. [2020-10-12 19:22:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:47,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-12 19:22:47,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:47,304 INFO L225 Difference]: With dead ends: 107037 [2020-10-12 19:22:47,305 INFO L226 Difference]: Without dead ends: 72731 [2020-10-12 19:22:47,374 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 [2020-10-12 19:22:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72731 states. [2020-10-12 19:22:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72731 to 43033. [2020-10-12 19:22:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43033 states. [2020-10-12 19:22:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43033 states to 43033 states and 63967 transitions. [2020-10-12 19:22:49,501 INFO L78 Accepts]: Start accepts. Automaton has 43033 states and 63967 transitions. Word has length 322 [2020-10-12 19:22:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:49,502 INFO L479 AbstractCegarLoop]: Abstraction has 43033 states and 63967 transitions. [2020-10-12 19:22:49,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 43033 states and 63967 transitions. [2020-10-12 19:22:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-12 19:22:49,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:49,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:22:49,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:22:49,535 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:49,535 INFO L82 PathProgramCache]: Analyzing trace with hash 411361216, now seen corresponding path program 1 times [2020-10-12 19:22:49,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:49,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267716027] [2020-10-12 19:22:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:54,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-12 19:22:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:22:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 19:22:54,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:22:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:22:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 19:22:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:55,120 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:22:55,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:55,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:55,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:55,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:22:55,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:55,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:55,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267716027] [2020-10-12 19:22:55,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:55,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:22:55,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560203207] [2020-10-12 19:22:55,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:22:55,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:55,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:22:55,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:22:55,251 INFO L87 Difference]: Start difference. First operand 43033 states and 63967 transitions. Second operand 5 states. [2020-10-12 19:23:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:23:04,754 INFO L93 Difference]: Finished difference Result 127767 states and 189783 transitions. [2020-10-12 19:23:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:23:04,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-12 19:23:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:23:04,894 INFO L225 Difference]: With dead ends: 127767 [2020-10-12 19:23:04,895 INFO L226 Difference]: Without dead ends: 84749 [2020-10-12 19:23:04,962 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 [2020-10-12 19:23:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84749 states. [2020-10-12 19:23:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84749 to 84747. [2020-10-12 19:23:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84747 states. [2020-10-12 19:23:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84747 states to 84747 states and 125073 transitions. [2020-10-12 19:23:08,940 INFO L78 Accepts]: Start accepts. Automaton has 84747 states and 125073 transitions. Word has length 324 [2020-10-12 19:23:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:23:08,940 INFO L479 AbstractCegarLoop]: Abstraction has 84747 states and 125073 transitions. [2020-10-12 19:23:08,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:23:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 84747 states and 125073 transitions. [2020-10-12 19:23:09,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 19:23:09,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:23:09,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:23:09,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:23:09,023 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:23:09,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:23:09,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1391438731, now seen corresponding path program 1 times [2020-10-12 19:23:09,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:23:09,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021783334] [2020-10-12 19:23:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:23:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:09,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:14,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 19:23:14,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:23:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:23:14,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:23:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 19:23:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:23:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:14,606 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:23:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:23:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:14,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:14,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:23:14,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:23:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:23:14,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:23:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:23:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:23:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:23:14,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021783334] [2020-10-12 19:23:14,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:23:14,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:23:14,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176545356] [2020-10-12 19:23:14,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:23:14,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:23:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:23:14,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:23:14,701 INFO L87 Difference]: Start difference. First operand 84747 states and 125073 transitions. Second operand 5 states. [2020-10-12 19:23:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:23:28,238 INFO L93 Difference]: Finished difference Result 225305 states and 330286 transitions. [2020-10-12 19:23:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:23:28,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-12 19:23:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:23:28,448 INFO L225 Difference]: With dead ends: 225305 [2020-10-12 19:23:28,448 INFO L226 Difference]: Without dead ends: 152071 [2020-10-12 19:23:28,520 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 [2020-10-12 19:23:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152071 states. [2020-10-12 19:23:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152071 to 94645. [2020-10-12 19:23:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94645 states. [2020-10-12 19:23:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94645 states to 94645 states and 141006 transitions. [2020-10-12 19:23:35,556 INFO L78 Accepts]: Start accepts. Automaton has 94645 states and 141006 transitions. Word has length 326 [2020-10-12 19:23:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:23:35,557 INFO L479 AbstractCegarLoop]: Abstraction has 94645 states and 141006 transitions. [2020-10-12 19:23:35,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:23:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 94645 states and 141006 transitions. [2020-10-12 19:23:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 19:23:35,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:23:35,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:23:35,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:23:35,624 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:23:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:23:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2040174397, now seen corresponding path program 1 times [2020-10-12 19:23:35,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:23:35,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79590320] [2020-10-12 19:23:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:23:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 19:23:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:41,285 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:23:41,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:23:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:41,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:23:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:23:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:23:41,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:23:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:23:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:23:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:23:41,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79590320] [2020-10-12 19:23:41,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:23:41,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:23:41,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634281331] [2020-10-12 19:23:41,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:23:41,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:23:41,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:23:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:23:41,416 INFO L87 Difference]: Start difference. First operand 94645 states and 141006 transitions. Second operand 5 states. [2020-10-12 19:23:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:23:59,198 INFO L93 Difference]: Finished difference Result 276633 states and 411564 transitions. [2020-10-12 19:23:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:23:59,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-12 19:23:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:23:59,403 INFO L225 Difference]: With dead ends: 276633 [2020-10-12 19:23:59,403 INFO L226 Difference]: Without dead ends: 186807 [2020-10-12 19:23:59,461 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 [2020-10-12 19:23:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186807 states. [2020-10-12 19:24:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186807 to 186805. [2020-10-12 19:24:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186805 states. [2020-10-12 19:24:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186805 states to 186805 states and 276518 transitions. [2020-10-12 19:24:13,413 INFO L78 Accepts]: Start accepts. Automaton has 186805 states and 276518 transitions. Word has length 328 [2020-10-12 19:24:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:24:13,413 INFO L479 AbstractCegarLoop]: Abstraction has 186805 states and 276518 transitions. [2020-10-12 19:24:13,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:24:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 186805 states and 276518 transitions. [2020-10-12 19:24:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 19:24:13,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:13,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:24:13,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:24:13,583 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1643019910, now seen corresponding path program 1 times [2020-10-12 19:24:13,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:13,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454283333] [2020-10-12 19:24:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:14,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:20,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 19:24:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:24:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6821 [2020-10-12 19:24:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:24:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 19:24:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:24:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 19:24:21,001 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-12 19:24:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:21,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:24:21,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:24:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:24:21,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454283333] [2020-10-12 19:24:21,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:21,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:24:21,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700302488] [2020-10-12 19:24:21,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:24:21,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:21,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:24:21,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:24:21,092 INFO L87 Difference]: Start difference. First operand 186805 states and 276518 transitions. Second operand 5 states.