/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:28:43,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:28:43,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:28:43,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:28:43,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:28:43,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:28:43,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:28:43,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:28:43,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:28:43,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:28:43,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:28:43,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:28:43,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:28:43,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:28:43,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:28:43,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:28:43,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:28:43,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:28:43,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:28:43,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:28:43,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:28:43,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:28:43,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:28:43,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:28:43,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:28:43,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:28:43,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:28:43,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:28:43,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:28:43,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:28:43,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:28:43,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:28:43,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:28:43,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:28:43,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:28:43,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:28:43,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:28:43,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:28:43,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:28:43,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:28:43,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:28:43,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:28:43,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:28:43,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:28:43,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:28:43,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:28:43,385 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:28:43,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:28:43,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:28:43,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:28:43,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:28:43,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:28:43,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:28:43,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:28:43,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:28:43,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:28:43,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:28:43,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:28:43,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:28:43,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:28:43,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:28:43,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:28:43,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:28:43,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:28:43,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:28:43,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:28:43,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:28:43,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:28:43,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:28:43,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:28:43,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:28:43,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:28:43,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:28:43,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:28:43,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:28:43,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:28:43,698 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:28:43,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:28:43,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9d71d8d/c0492c87a1ec4fab9d600922eaee0aa2/FLAGb0d44bc93 [2020-10-15 03:28:44,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:28:44,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:28:44,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9d71d8d/c0492c87a1ec4fab9d600922eaee0aa2/FLAGb0d44bc93 [2020-10-15 03:28:44,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9d71d8d/c0492c87a1ec4fab9d600922eaee0aa2 [2020-10-15 03:28:44,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:28:44,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:28:44,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:28:44,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:28:44,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:28:44,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:28:44" (1/1) ... [2020-10-15 03:28:44,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4a5394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:44, skipping insertion in model container [2020-10-15 03:28:44,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:28:44" (1/1) ... [2020-10-15 03:28:44,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:28:44,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:28:44,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:28:44,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:28:45,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:28:45,171 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:28:45,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45 WrapperNode [2020-10-15 03:28:45,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:28:45,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:28:45,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:28:45,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:28:45,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... [2020-10-15 03:28:45,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... [2020-10-15 03:28:45,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... [2020-10-15 03:28:45,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... [2020-10-15 03:28:45,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... [2020-10-15 03:28:45,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... [2020-10-15 03:28:45,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... [2020-10-15 03:28:45,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:28:45,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:28:45,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:28:45,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:28:45,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:28:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:28:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:28:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:28:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:28:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:28:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:28:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:28:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:28:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:28:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:28:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:28:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:28:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:28:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:28:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:28:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:28:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:28:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:28:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:28:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:28:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:28:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:28:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:28:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:28:45,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:28:45,968 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:28:45,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:28:45 BoogieIcfgContainer [2020-10-15 03:28:45,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:28:45,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:28:45,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:28:45,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:28:45,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:28:44" (1/3) ... [2020-10-15 03:28:45,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d36a415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:28:45, skipping insertion in model container [2020-10-15 03:28:45,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:28:45" (2/3) ... [2020-10-15 03:28:45,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d36a415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:28:45, skipping insertion in model container [2020-10-15 03:28:45,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:28:45" (3/3) ... [2020-10-15 03:28:45,983 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:28:45,993 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:28:46,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:28:46,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:28:46,039 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:28:46,039 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:28:46,039 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:28:46,040 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:28:46,040 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:28:46,040 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:28:46,040 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:28:46,040 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:28:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-10-15 03:28:46,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:28:46,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:46,073 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] [2020-10-15 03:28:46,073 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2061210715, now seen corresponding path program 1 times [2020-10-15 03:28:46,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:46,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478114520] [2020-10-15 03:28:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:46,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:49,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:51,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:28:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:28:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:28:51,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:51,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:51,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:28:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:28:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:28:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:28:51,838 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:28:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:51,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:51,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:51,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:28:51,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:51,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:28:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:51,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478114520] [2020-10-15 03:28:51,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:51,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:28:51,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454696268] [2020-10-15 03:28:51,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:28:51,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:51,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:28:51,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:51,925 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 9 states. [2020-10-15 03:28:52,263 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:28:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:53,483 INFO L93 Difference]: Finished difference Result 1015 states and 1607 transitions. [2020-10-15 03:28:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:28:53,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-15 03:28:53,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:53,522 INFO L225 Difference]: With dead ends: 1015 [2020-10-15 03:28:53,522 INFO L226 Difference]: Without dead ends: 911 [2020-10-15 03:28:53,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:28:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-10-15 03:28:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 189. [2020-10-15 03:28:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-15 03:28:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 272 transitions. [2020-10-15 03:28:53,642 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 272 transitions. Word has length 77 [2020-10-15 03:28:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:53,643 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 272 transitions. [2020-10-15 03:28:53,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:28:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 272 transitions. [2020-10-15 03:28:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:28:53,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:53,656 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] [2020-10-15 03:28:53,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:28:53,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1959766300, now seen corresponding path program 1 times [2020-10-15 03:28:53,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:53,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847581211] [2020-10-15 03:28:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:53,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:58,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:58,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:28:58,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:28:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:28:58,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:58,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:28:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:28:58,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:28:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-15 03:28:59,000 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:28:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:59,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:28:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:59,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:28:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:28:59,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:28:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:59,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847581211] [2020-10-15 03:28:59,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:28:59,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:28:59,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775408381] [2020-10-15 03:28:59,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:28:59,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:59,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:28:59,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:28:59,070 INFO L87 Difference]: Start difference. First operand 189 states and 272 transitions. Second operand 6 states. [2020-10-15 03:28:59,279 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:28:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:28:59,768 INFO L93 Difference]: Finished difference Result 473 states and 722 transitions. [2020-10-15 03:28:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:28:59,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-15 03:28:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:28:59,771 INFO L225 Difference]: With dead ends: 473 [2020-10-15 03:28:59,771 INFO L226 Difference]: Without dead ends: 331 [2020-10-15 03:28:59,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:28:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-15 03:28:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-10-15 03:28:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-15 03:28:59,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 494 transitions. [2020-10-15 03:28:59,800 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 494 transitions. Word has length 79 [2020-10-15 03:28:59,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:59,800 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 494 transitions. [2020-10-15 03:28:59,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:28:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 494 transitions. [2020-10-15 03:28:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:28:59,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:59,802 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] [2020-10-15 03:28:59,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:28:59,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:59,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1947886583, now seen corresponding path program 1 times [2020-10-15 03:28:59,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:59,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783010144] [2020-10-15 03:28:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:01,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:01,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:04,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:04,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:29:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:29:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:29:04,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:04,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:29:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:29:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:29:05,186 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:05,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:05,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:05,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:29:05,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:05,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:05,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:05,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:29:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:05,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783010144] [2020-10-15 03:29:05,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:05,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:29:05,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484692472] [2020-10-15 03:29:05,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:29:05,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:05,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:29:05,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:29:05,266 INFO L87 Difference]: Start difference. First operand 329 states and 494 transitions. Second operand 7 states. [2020-10-15 03:29:05,477 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:29:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:06,267 INFO L93 Difference]: Finished difference Result 1058 states and 1641 transitions. [2020-10-15 03:29:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:29:06,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-15 03:29:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:06,273 INFO L225 Difference]: With dead ends: 1058 [2020-10-15 03:29:06,273 INFO L226 Difference]: Without dead ends: 776 [2020-10-15 03:29:06,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:29:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-10-15 03:29:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 386. [2020-10-15 03:29:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-15 03:29:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 579 transitions. [2020-10-15 03:29:06,317 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 579 transitions. Word has length 79 [2020-10-15 03:29:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:06,317 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 579 transitions. [2020-10-15 03:29:06,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:29:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 579 transitions. [2020-10-15 03:29:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:29:06,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:06,319 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] [2020-10-15 03:29:06,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:29:06,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:06,320 INFO L82 PathProgramCache]: Analyzing trace with hash 336997141, now seen corresponding path program 1 times [2020-10-15 03:29:06,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:06,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726960428] [2020-10-15 03:29:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:06,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:06,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:06,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:11,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:29:11,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:29:11,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:29:11,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:11,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:29:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:29:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:11,673 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:11,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:11,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:11,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:11,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:11,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:29:11,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:11,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:11,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:11,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:11,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:11,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:29:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:11,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726960428] [2020-10-15 03:29:11,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:11,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:29:11,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543023900] [2020-10-15 03:29:11,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:29:11,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:11,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:29:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:29:11,761 INFO L87 Difference]: Start difference. First operand 386 states and 579 transitions. Second operand 7 states. [2020-10-15 03:29:12,021 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:29:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:13,086 INFO L93 Difference]: Finished difference Result 1050 states and 1621 transitions. [2020-10-15 03:29:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:29:13,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-15 03:29:13,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:13,098 INFO L225 Difference]: With dead ends: 1050 [2020-10-15 03:29:13,098 INFO L226 Difference]: Without dead ends: 768 [2020-10-15 03:29:13,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:29:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-15 03:29:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 458. [2020-10-15 03:29:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-15 03:29:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 687 transitions. [2020-10-15 03:29:13,189 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 687 transitions. Word has length 79 [2020-10-15 03:29:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:13,189 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 687 transitions. [2020-10-15 03:29:13,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:29:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 687 transitions. [2020-10-15 03:29:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:29:13,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:13,193 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] [2020-10-15 03:29:13,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:29:13,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash 360742363, now seen corresponding path program 1 times [2020-10-15 03:29:13,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:13,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737831407] [2020-10-15 03:29:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:29:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:18,553 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:18,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:18,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:18,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:18,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:29:18,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:18,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:29:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:18,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737831407] [2020-10-15 03:29:18,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:18,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:29:18,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585193107] [2020-10-15 03:29:18,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:29:18,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:18,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:29:18,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:29:18,654 INFO L87 Difference]: Start difference. First operand 458 states and 687 transitions. Second operand 7 states. [2020-10-15 03:29:18,918 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:29:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:20,041 INFO L93 Difference]: Finished difference Result 1042 states and 1601 transitions. [2020-10-15 03:29:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:29:20,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-15 03:29:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:20,047 INFO L225 Difference]: With dead ends: 1042 [2020-10-15 03:29:20,048 INFO L226 Difference]: Without dead ends: 760 [2020-10-15 03:29:20,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:29:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-15 03:29:20,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 490. [2020-10-15 03:29:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-15 03:29:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 731 transitions. [2020-10-15 03:29:20,110 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 731 transitions. Word has length 79 [2020-10-15 03:29:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:20,112 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 731 transitions. [2020-10-15 03:29:20,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:29:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 731 transitions. [2020-10-15 03:29:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:29:20,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:20,118 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] [2020-10-15 03:29:20,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:29:20,119 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:20,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1704834812, now seen corresponding path program 1 times [2020-10-15 03:29:20,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:20,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640798928] [2020-10-15 03:29:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:20,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:20,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:23,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:29:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:29:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3048 [2020-10-15 03:29:23,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:23,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:29:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:29:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:29:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:23,516 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:23,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:23,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:29:23,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:23,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:29:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:23,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640798928] [2020-10-15 03:29:23,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:23,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:29:23,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688007346] [2020-10-15 03:29:23,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:29:23,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:29:23,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:29:23,575 INFO L87 Difference]: Start difference. First operand 490 states and 731 transitions. Second operand 9 states. [2020-10-15 03:29:23,926 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:29:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:24,870 INFO L93 Difference]: Finished difference Result 2248 states and 3494 transitions. [2020-10-15 03:29:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:29:24,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-15 03:29:24,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:24,883 INFO L225 Difference]: With dead ends: 2248 [2020-10-15 03:29:24,884 INFO L226 Difference]: Without dead ends: 1966 [2020-10-15 03:29:24,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:29:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-10-15 03:29:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 490. [2020-10-15 03:29:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-15 03:29:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 729 transitions. [2020-10-15 03:29:24,987 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 729 transitions. Word has length 79 [2020-10-15 03:29:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:24,988 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 729 transitions. [2020-10-15 03:29:24,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:29:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 729 transitions. [2020-10-15 03:29:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:29:24,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:24,990 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] [2020-10-15 03:29:24,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:29:24,990 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1724884155, now seen corresponding path program 1 times [2020-10-15 03:29:24,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:24,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685650861] [2020-10-15 03:29:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:27,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:29:27,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:29:27,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2228 [2020-10-15 03:29:27,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:27,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:27,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:29:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:29:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:27,409 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:27,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:27,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:27,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:29:27,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:27,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:27,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685650861] [2020-10-15 03:29:27,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:27,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:29:27,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124694624] [2020-10-15 03:29:27,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:29:27,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:27,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:29:27,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:29:27,446 INFO L87 Difference]: Start difference. First operand 490 states and 729 transitions. Second operand 4 states. [2020-10-15 03:29:27,635 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:29:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:28,111 INFO L93 Difference]: Finished difference Result 1126 states and 1705 transitions. [2020-10-15 03:29:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:29:28,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-15 03:29:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:28,116 INFO L225 Difference]: With dead ends: 1126 [2020-10-15 03:29:28,116 INFO L226 Difference]: Without dead ends: 690 [2020-10-15 03:29:28,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:29:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-15 03:29:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 686. [2020-10-15 03:29:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-10-15 03:29:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1024 transitions. [2020-10-15 03:29:28,202 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1024 transitions. Word has length 79 [2020-10-15 03:29:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:28,202 INFO L479 AbstractCegarLoop]: Abstraction has 686 states and 1024 transitions. [2020-10-15 03:29:28,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:29:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1024 transitions. [2020-10-15 03:29:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:29:28,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:28,204 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] [2020-10-15 03:29:28,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:29:28,204 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:28,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:28,205 INFO L82 PathProgramCache]: Analyzing trace with hash -35528753, now seen corresponding path program 1 times [2020-10-15 03:29:28,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:28,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630597574] [2020-10-15 03:29:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:33,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:33,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:29:33,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:29:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:29:33,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:33,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:29:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:29:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:33,482 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:33,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:33,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:29:33,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:33,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:33,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:33,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630597574] [2020-10-15 03:29:33,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:33,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:29:33,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787833271] [2020-10-15 03:29:33,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:29:33,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:33,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:29:33,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:29:33,541 INFO L87 Difference]: Start difference. First operand 686 states and 1024 transitions. Second operand 7 states. [2020-10-15 03:29:33,716 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:29:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:34,550 INFO L93 Difference]: Finished difference Result 1654 states and 2514 transitions. [2020-10-15 03:29:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:29:34,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-15 03:29:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:34,557 INFO L225 Difference]: With dead ends: 1654 [2020-10-15 03:29:34,557 INFO L226 Difference]: Without dead ends: 1161 [2020-10-15 03:29:34,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:29:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-10-15 03:29:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 674. [2020-10-15 03:29:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-15 03:29:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 994 transitions. [2020-10-15 03:29:34,650 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 994 transitions. Word has length 79 [2020-10-15 03:29:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:34,651 INFO L479 AbstractCegarLoop]: Abstraction has 674 states and 994 transitions. [2020-10-15 03:29:34,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:29:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 994 transitions. [2020-10-15 03:29:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:29:34,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:34,652 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] [2020-10-15 03:29:34,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:29:34,653 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:34,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:34,653 INFO L82 PathProgramCache]: Analyzing trace with hash 658726851, now seen corresponding path program 1 times [2020-10-15 03:29:34,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:34,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351738877] [2020-10-15 03:29:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:34,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:35,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:39,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:39,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:29:39,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:29:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:29:39,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:39,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:29:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:29:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:39,915 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:39,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:39,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:29:39,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:39,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:39,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351738877] [2020-10-15 03:29:39,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:39,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:29:39,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038511631] [2020-10-15 03:29:39,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:29:39,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:39,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:29:39,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:29:39,976 INFO L87 Difference]: Start difference. First operand 674 states and 994 transitions. Second operand 7 states. [2020-10-15 03:29:40,154 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:29:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:40,935 INFO L93 Difference]: Finished difference Result 1802 states and 2732 transitions. [2020-10-15 03:29:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:29:40,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-15 03:29:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:40,942 INFO L225 Difference]: With dead ends: 1802 [2020-10-15 03:29:40,942 INFO L226 Difference]: Without dead ends: 1217 [2020-10-15 03:29:40,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:29:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-10-15 03:29:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 610. [2020-10-15 03:29:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-10-15 03:29:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 898 transitions. [2020-10-15 03:29:41,025 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 898 transitions. Word has length 79 [2020-10-15 03:29:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:41,026 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 898 transitions. [2020-10-15 03:29:41,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:29:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 898 transitions. [2020-10-15 03:29:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:29:41,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:41,027 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] [2020-10-15 03:29:41,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:29:41,028 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:41,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:41,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1312180926, now seen corresponding path program 1 times [2020-10-15 03:29:41,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:41,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859049755] [2020-10-15 03:29:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:41,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:42,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:42,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:29:42,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:29:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-15 03:29:42,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:42,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:42,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 03:29:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:29:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:42,675 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:42,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:42,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:42,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:42,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:42,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:29:42,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:42,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:42,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:42,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:42,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:42,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859049755] [2020-10-15 03:29:42,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:42,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:29:42,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494622086] [2020-10-15 03:29:42,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:29:42,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:42,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:29:42,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:29:42,705 INFO L87 Difference]: Start difference. First operand 610 states and 898 transitions. Second operand 4 states. [2020-10-15 03:29:42,881 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:29:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:43,491 INFO L93 Difference]: Finished difference Result 1424 states and 2160 transitions. [2020-10-15 03:29:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:29:43,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-15 03:29:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:43,496 INFO L225 Difference]: With dead ends: 1424 [2020-10-15 03:29:43,496 INFO L226 Difference]: Without dead ends: 963 [2020-10-15 03:29:43,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:29:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-15 03:29:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2020-10-15 03:29:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-15 03:29:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1441 transitions. [2020-10-15 03:29:43,605 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1441 transitions. Word has length 80 [2020-10-15 03:29:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:43,605 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1441 transitions. [2020-10-15 03:29:43,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:29:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1441 transitions. [2020-10-15 03:29:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:29:43,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:43,606 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] [2020-10-15 03:29:43,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:29:43,607 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:43,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1387517951, now seen corresponding path program 1 times [2020-10-15 03:29:43,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:43,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407969522] [2020-10-15 03:29:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:46,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:46,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:29:46,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:29:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3271 [2020-10-15 03:29:46,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:46,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:29:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:29:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:47,078 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:47,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:47,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:47,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407969522] [2020-10-15 03:29:47,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:47,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:29:47,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269792061] [2020-10-15 03:29:47,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:29:47,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:47,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:29:47,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:29:47,113 INFO L87 Difference]: Start difference. First operand 961 states and 1441 transitions. Second operand 6 states. [2020-10-15 03:29:47,302 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:29:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:47,980 INFO L93 Difference]: Finished difference Result 2543 states and 3887 transitions. [2020-10-15 03:29:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:29:47,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-15 03:29:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:47,988 INFO L225 Difference]: With dead ends: 2543 [2020-10-15 03:29:47,988 INFO L226 Difference]: Without dead ends: 1723 [2020-10-15 03:29:47,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:29:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-15 03:29:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1721. [2020-10-15 03:29:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-10-15 03:29:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2613 transitions. [2020-10-15 03:29:48,256 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2613 transitions. Word has length 81 [2020-10-15 03:29:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:48,256 INFO L479 AbstractCegarLoop]: Abstraction has 1721 states and 2613 transitions. [2020-10-15 03:29:48,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:29:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2613 transitions. [2020-10-15 03:29:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:29:48,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:48,258 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] [2020-10-15 03:29:48,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:29:48,258 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:48,259 INFO L82 PathProgramCache]: Analyzing trace with hash 999204860, now seen corresponding path program 1 times [2020-10-15 03:29:48,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:48,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028644872] [2020-10-15 03:29:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:49,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:29:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:29:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-15 03:29:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:49,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:29:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:29:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:49,665 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:49,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:49,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028644872] [2020-10-15 03:29:49,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:49,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:29:49,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246024707] [2020-10-15 03:29:49,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:29:49,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:49,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:29:49,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:29:49,690 INFO L87 Difference]: Start difference. First operand 1721 states and 2613 transitions. Second operand 4 states. [2020-10-15 03:29:49,870 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:29:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:50,697 INFO L93 Difference]: Finished difference Result 4585 states and 7043 transitions. [2020-10-15 03:29:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:29:50,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-15 03:29:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:50,711 INFO L225 Difference]: With dead ends: 4585 [2020-10-15 03:29:50,711 INFO L226 Difference]: Without dead ends: 3053 [2020-10-15 03:29:50,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:29:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2020-10-15 03:29:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3023. [2020-10-15 03:29:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3023 states. [2020-10-15 03:29:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 4603 transitions. [2020-10-15 03:29:51,194 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 4603 transitions. Word has length 81 [2020-10-15 03:29:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:51,194 INFO L479 AbstractCegarLoop]: Abstraction has 3023 states and 4603 transitions. [2020-10-15 03:29:51,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:29:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 4603 transitions. [2020-10-15 03:29:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:29:51,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:51,196 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] [2020-10-15 03:29:51,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:29:51,197 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash -107651935, now seen corresponding path program 1 times [2020-10-15 03:29:51,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:51,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794905680] [2020-10-15 03:29:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:52,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:29:52,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:29:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-10-15 03:29:52,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:52,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:29:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:29:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:29:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:52,926 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:52,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:52,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:29:52,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:52,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:52,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:29:52,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:52,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794905680] [2020-10-15 03:29:52,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:52,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:29:52,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332704461] [2020-10-15 03:29:52,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:29:52,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:52,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:29:52,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:29:52,959 INFO L87 Difference]: Start difference. First operand 3023 states and 4603 transitions. Second operand 6 states. [2020-10-15 03:29:53,141 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:29:54,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:54,195 INFO L93 Difference]: Finished difference Result 8723 states and 13365 transitions. [2020-10-15 03:29:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:29:54,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-15 03:29:54,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:54,214 INFO L225 Difference]: With dead ends: 8723 [2020-10-15 03:29:54,215 INFO L226 Difference]: Without dead ends: 5861 [2020-10-15 03:29:54,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:29:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2020-10-15 03:29:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 5859. [2020-10-15 03:29:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5859 states. [2020-10-15 03:29:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8935 transitions. [2020-10-15 03:29:54,897 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8935 transitions. Word has length 82 [2020-10-15 03:29:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:54,898 INFO L479 AbstractCegarLoop]: Abstraction has 5859 states and 8935 transitions. [2020-10-15 03:29:54,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:29:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8935 transitions. [2020-10-15 03:29:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:29:54,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:54,899 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] [2020-10-15 03:29:54,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:29:54,899 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:54,900 INFO L82 PathProgramCache]: Analyzing trace with hash -636942436, now seen corresponding path program 1 times [2020-10-15 03:29:54,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:54,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291670887] [2020-10-15 03:29:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:55,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:55,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:29:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:55,594 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:55,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:55,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:55,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:55,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:29:55,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:55,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:55,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291670887] [2020-10-15 03:29:55,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:55,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:29:55,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091591705] [2020-10-15 03:29:55,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:29:55,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:55,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:29:55,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:29:55,620 INFO L87 Difference]: Start difference. First operand 5859 states and 8935 transitions. Second operand 4 states. [2020-10-15 03:29:55,799 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:29:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:57,265 INFO L93 Difference]: Finished difference Result 16487 states and 25161 transitions. [2020-10-15 03:29:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:29:57,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-15 03:29:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:57,302 INFO L225 Difference]: With dead ends: 16487 [2020-10-15 03:29:57,302 INFO L226 Difference]: Without dead ends: 10785 [2020-10-15 03:29:57,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:29:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10785 states. [2020-10-15 03:29:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10785 to 10731. [2020-10-15 03:29:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10731 states. [2020-10-15 03:29:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10731 states to 10731 states and 16255 transitions. [2020-10-15 03:29:58,450 INFO L78 Accepts]: Start accepts. Automaton has 10731 states and 16255 transitions. Word has length 82 [2020-10-15 03:29:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:58,451 INFO L479 AbstractCegarLoop]: Abstraction has 10731 states and 16255 transitions. [2020-10-15 03:29:58,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:29:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 10731 states and 16255 transitions. [2020-10-15 03:29:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:29:58,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:58,452 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] [2020-10-15 03:29:58,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:29:58,452 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:58,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:58,453 INFO L82 PathProgramCache]: Analyzing trace with hash 274936803, now seen corresponding path program 1 times [2020-10-15 03:29:58,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:58,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301046510] [2020-10-15 03:29:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:58,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:58,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:58,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:58,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:29:58,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:29:58,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-15 03:29:58,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:58,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:58,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 03:29:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:29:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:58,919 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:29:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:58,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:58,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:29:58,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:58,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:29:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:58,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301046510] [2020-10-15 03:29:58,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:58,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:29:58,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550618645] [2020-10-15 03:29:58,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:29:58,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:58,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:29:58,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:29:58,945 INFO L87 Difference]: Start difference. First operand 10731 states and 16255 transitions. Second operand 4 states. [2020-10-15 03:29:59,205 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:30:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:01,663 INFO L93 Difference]: Finished difference Result 30459 states and 46033 transitions. [2020-10-15 03:30:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:30:01,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 03:30:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:01,709 INFO L225 Difference]: With dead ends: 30459 [2020-10-15 03:30:01,710 INFO L226 Difference]: Without dead ends: 19813 [2020-10-15 03:30:01,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:30:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19813 states. [2020-10-15 03:30:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19813 to 19811. [2020-10-15 03:30:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19811 states. [2020-10-15 03:30:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19811 states to 19811 states and 29683 transitions. [2020-10-15 03:30:04,486 INFO L78 Accepts]: Start accepts. Automaton has 19811 states and 29683 transitions. Word has length 83 [2020-10-15 03:30:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:04,486 INFO L479 AbstractCegarLoop]: Abstraction has 19811 states and 29683 transitions. [2020-10-15 03:30:04,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:30:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 19811 states and 29683 transitions. [2020-10-15 03:30:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:30:04,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:04,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:30:04,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:30:04,488 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:04,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1517057870, now seen corresponding path program 1 times [2020-10-15 03:30:04,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:04,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974781097] [2020-10-15 03:30:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:04,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:04,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:04,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:30:04,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:30:04,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-15 03:30:04,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:04,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:30:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:30:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:30:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:05,208 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:30:05,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:05,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:30:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:05,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974781097] [2020-10-15 03:30:05,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:05,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:30:05,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195441223] [2020-10-15 03:30:05,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:30:05,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:05,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:30:05,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:30:05,243 INFO L87 Difference]: Start difference. First operand 19811 states and 29683 transitions. Second operand 6 states. [2020-10-15 03:30:05,424 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:30:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:09,707 INFO L93 Difference]: Finished difference Result 59067 states and 88461 transitions. [2020-10-15 03:30:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:30:09,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-15 03:30:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:09,788 INFO L225 Difference]: With dead ends: 59067 [2020-10-15 03:30:09,788 INFO L226 Difference]: Without dead ends: 39333 [2020-10-15 03:30:09,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:30:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39333 states. [2020-10-15 03:30:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39333 to 39331. [2020-10-15 03:30:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39331 states. [2020-10-15 03:30:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39331 states to 39331 states and 58671 transitions. [2020-10-15 03:30:14,086 INFO L78 Accepts]: Start accepts. Automaton has 39331 states and 58671 transitions. Word has length 84 [2020-10-15 03:30:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:14,086 INFO L479 AbstractCegarLoop]: Abstraction has 39331 states and 58671 transitions. [2020-10-15 03:30:14,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:30:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 39331 states and 58671 transitions. [2020-10-15 03:30:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:30:14,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:14,087 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] [2020-10-15 03:30:14,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:30:14,088 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:14,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:14,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1528937587, now seen corresponding path program 1 times [2020-10-15 03:30:14,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:14,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179094686] [2020-10-15 03:30:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:14,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:14,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:30:14,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:30:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-15 03:30:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:14,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 03:30:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:30:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:14,418 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:30:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:14,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:14,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179094686] [2020-10-15 03:30:14,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:14,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:30:14,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034200164] [2020-10-15 03:30:14,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:30:14,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:14,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:30:14,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:30:14,441 INFO L87 Difference]: Start difference. First operand 39331 states and 58671 transitions. Second operand 4 states. [2020-10-15 03:30:14,613 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:30:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:23,216 INFO L93 Difference]: Finished difference Result 111655 states and 165809 transitions. [2020-10-15 03:30:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:30:23,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-15 03:30:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:23,324 INFO L225 Difference]: With dead ends: 111655 [2020-10-15 03:30:23,325 INFO L226 Difference]: Without dead ends: 72417 [2020-10-15 03:30:23,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:30:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72417 states. [2020-10-15 03:30:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72417 to 72369. [2020-10-15 03:30:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72369 states. [2020-10-15 03:30:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72369 states to 72369 states and 106416 transitions. [2020-10-15 03:30:32,631 INFO L78 Accepts]: Start accepts. Automaton has 72369 states and 106416 transitions. Word has length 84 [2020-10-15 03:30:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:32,631 INFO L479 AbstractCegarLoop]: Abstraction has 72369 states and 106416 transitions. [2020-10-15 03:30:32,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:30:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 72369 states and 106416 transitions. [2020-10-15 03:30:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:30:32,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:32,632 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] [2020-10-15 03:30:32,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:30:32,633 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:32,633 INFO L82 PathProgramCache]: Analyzing trace with hash -817696616, now seen corresponding path program 1 times [2020-10-15 03:30:32,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:32,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467712125] [2020-10-15 03:30:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:32,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:30:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-15 03:30:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:30:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:32,928 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:30:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:32,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:32,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:30:32,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:32,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:32,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467712125] [2020-10-15 03:30:32,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:32,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:30:32,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375734051] [2020-10-15 03:30:32,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:30:32,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:32,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:30:32,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:30:32,951 INFO L87 Difference]: Start difference. First operand 72369 states and 106416 transitions. Second operand 5 states. [2020-10-15 03:30:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:46,821 INFO L93 Difference]: Finished difference Result 131488 states and 193263 transitions. [2020-10-15 03:30:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:30:46,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-15 03:30:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:47,025 INFO L225 Difference]: With dead ends: 131488 [2020-10-15 03:30:47,025 INFO L226 Difference]: Without dead ends: 131486 [2020-10-15 03:30:47,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:30:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131486 states. [2020-10-15 03:30:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131486 to 74417. [2020-10-15 03:30:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74417 states. [2020-10-15 03:30:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74417 states to 74417 states and 108208 transitions. [2020-10-15 03:30:57,516 INFO L78 Accepts]: Start accepts. Automaton has 74417 states and 108208 transitions. Word has length 85 [2020-10-15 03:30:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:57,517 INFO L479 AbstractCegarLoop]: Abstraction has 74417 states and 108208 transitions. [2020-10-15 03:30:57,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:30:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 74417 states and 108208 transitions. [2020-10-15 03:30:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:30:57,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:57,518 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] [2020-10-15 03:30:57,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:30:57,518 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash 876944192, now seen corresponding path program 1 times [2020-10-15 03:30:57,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:57,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712139275] [2020-10-15 03:30:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:59,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:59,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:30:59,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:30:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-10-15 03:30:59,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:59,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:30:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:30:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:30:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:59,499 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:30:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:59,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:59,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:59,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:30:59,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:59,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:59,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712139275] [2020-10-15 03:30:59,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:59,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:30:59,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682620680] [2020-10-15 03:30:59,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:30:59,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:59,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:30:59,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:30:59,547 INFO L87 Difference]: Start difference. First operand 74417 states and 108208 transitions. Second operand 9 states. [2020-10-15 03:30:59,754 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:32:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:13,886 INFO L93 Difference]: Finished difference Result 677300 states and 987842 transitions. [2020-10-15 03:32:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:32:14,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-15 03:32:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:14,997 INFO L225 Difference]: With dead ends: 677300 [2020-10-15 03:32:14,997 INFO L226 Difference]: Without dead ends: 602930 [2020-10-15 03:32:15,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:32:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602930 states.