/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=NARROWEST --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.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:14:06,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:14:06,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:14:06,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:14:06,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:14:06,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:14:06,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:14:06,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:14:06,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:14:06,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:14:06,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:14:06,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:14:06,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:14:06,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:14:06,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:14:06,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:14:06,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:14:06,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:14:06,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:14:06,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:14:06,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:14:06,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:14:06,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:14:06,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:14:06,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:14:06,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:14:06,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:14:06,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:14:06,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:14:06,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:14:06,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:14:06,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:14:06,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:14:06,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:14:06,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:14:06,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:14:06,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:14:06,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:14:06,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:14:06,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:14:06,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:14:06,278 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 [2020-10-13 14:14:06,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:14:06,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:14:06,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:14:06,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:14:06,301 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:14:06,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:14:06,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:14:06,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:14:06,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:14:06,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:14:06,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:14:06,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:14:06,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:14:06,303 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:14:06,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:14:06,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:14:06,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:14:06,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:14:06,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:14:06,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:14:06,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:14:06,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:14:06,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:14:06,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:14:06,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:14:06,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:14:06,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:14:06,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:14:06,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:14:06,306 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:14:06,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:14:06,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:14:06,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:14:06,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:14:06,647 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:14:06,648 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:14:06,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c475e241/14e2d67b30d644688e7beac362b569aa/FLAGf83e5cebe [2020-10-13 14:14:07,382 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:14:07,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:14:07,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c475e241/14e2d67b30d644688e7beac362b569aa/FLAGf83e5cebe [2020-10-13 14:14:07,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c475e241/14e2d67b30d644688e7beac362b569aa [2020-10-13 14:14:07,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:14:07,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:14:07,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:14:07,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:14:07,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:14:07,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:14:07" (1/1) ... [2020-10-13 14:14:07,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510a549d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:07, skipping insertion in model container [2020-10-13 14:14:07,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:14:07" (1/1) ... [2020-10-13 14:14:07,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:14:07,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:14:08,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:14:08,423 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:14:08,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:14:08,931 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:14:08,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08 WrapperNode [2020-10-13 14:14:08,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:14:08,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:14:08,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:14:08,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:14:08,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (1/1) ... [2020-10-13 14:14:08,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (1/1) ... [2020-10-13 14:14:08,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (1/1) ... [2020-10-13 14:14:08,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (1/1) ... [2020-10-13 14:14:09,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (1/1) ... [2020-10-13 14:14:09,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (1/1) ... [2020-10-13 14:14:09,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (1/1) ... [2020-10-13 14:14:09,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:14:09,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:14:09,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:14:09,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:14:09,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (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 [2020-10-13 14:14:09,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:14:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:14:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:14:09,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:14:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:14:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:14:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:14:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:14:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:14:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:14:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:14:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:14:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:14:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:14:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:14:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:14:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:14:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:14:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:14:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:14:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:14:11,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:14:11,125 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:14:11,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:14:11 BoogieIcfgContainer [2020-10-13 14:14:11,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:14:11,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:14:11,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:14:11,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:14:11,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:14:07" (1/3) ... [2020-10-13 14:14:11,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540e6366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:14:11, skipping insertion in model container [2020-10-13 14:14:11,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:08" (2/3) ... [2020-10-13 14:14:11,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540e6366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:14:11, skipping insertion in model container [2020-10-13 14:14:11,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:14:11" (3/3) ... [2020-10-13 14:14:11,140 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:14:11,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:14:11,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-13 14:14:11,171 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-13 14:14:11,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:14:11,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:14:11,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:14:11,196 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:14:11,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:14:11,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:14:11,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:14:11,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:14:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2020-10-13 14:14:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:11,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:11,246 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] [2020-10-13 14:14:11,247 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:11,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2065452195, now seen corresponding path program 1 times [2020-10-13 14:14:11,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:11,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386870101] [2020-10-13 14:14:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:15,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:16,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:16,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:14:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:14:16,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:14:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:14:16,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:14:17,409 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:17,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:17,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 14:14:17,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:17,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386870101] [2020-10-13 14:14:17,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:17,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:17,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519089880] [2020-10-13 14:14:17,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:17,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:17,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:17,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:17,510 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 7 states. [2020-10-13 14:14:18,345 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:14:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:23,194 INFO L93 Difference]: Finished difference Result 1392 states and 2245 transitions. [2020-10-13 14:14:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:23,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:14:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:23,234 INFO L225 Difference]: With dead ends: 1392 [2020-10-13 14:14:23,235 INFO L226 Difference]: Without dead ends: 1187 [2020-10-13 14:14:23,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-13 14:14:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 666. [2020-10-13 14:14:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-10-13 14:14:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 858 transitions. [2020-10-13 14:14:23,379 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 858 transitions. Word has length 64 [2020-10-13 14:14:23,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:23,380 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 858 transitions. [2020-10-13 14:14:23,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:23,381 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 858 transitions. [2020-10-13 14:14:23,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:23,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:23,396 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] [2020-10-13 14:14:23,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:14:23,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1513076432, now seen corresponding path program 1 times [2020-10-13 14:14:23,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:23,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573585692] [2020-10-13 14:14:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:28,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:28,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:14:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-13 14:14:28,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:14:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:29,181 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:29,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:29,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:14:29,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:29,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:29,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573585692] [2020-10-13 14:14:29,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:29,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:29,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7658295] [2020-10-13 14:14:29,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:29,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:29,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:29,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:29,247 INFO L87 Difference]: Start difference. First operand 666 states and 858 transitions. Second operand 7 states. [2020-10-13 14:14:29,878 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:14:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:32,999 INFO L93 Difference]: Finished difference Result 2105 states and 2883 transitions. [2020-10-13 14:14:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:33,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:14:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:33,011 INFO L225 Difference]: With dead ends: 2105 [2020-10-13 14:14:33,012 INFO L226 Difference]: Without dead ends: 1926 [2020-10-13 14:14:33,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2020-10-13 14:14:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 901. [2020-10-13 14:14:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-13 14:14:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1210 transitions. [2020-10-13 14:14:33,068 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1210 transitions. Word has length 64 [2020-10-13 14:14:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:33,069 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1210 transitions. [2020-10-13 14:14:33,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1210 transitions. [2020-10-13 14:14:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:33,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:33,071 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] [2020-10-13 14:14:33,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:14:33,072 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1452359371, now seen corresponding path program 1 times [2020-10-13 14:14:33,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:33,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638428052] [2020-10-13 14:14:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:38,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:38,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:38,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:14:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:14:38,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:14:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:14:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:14:38,781 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:38,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:38,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:38,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:38,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:38,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:38,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:14:38,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:38,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:38,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:38,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638428052] [2020-10-13 14:14:38,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:38,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:38,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402030907] [2020-10-13 14:14:38,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:38,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:38,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:38,827 INFO L87 Difference]: Start difference. First operand 901 states and 1210 transitions. Second operand 7 states. [2020-10-13 14:14:39,453 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:14:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:42,749 INFO L93 Difference]: Finished difference Result 3388 states and 4833 transitions. [2020-10-13 14:14:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:42,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:14:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:42,764 INFO L225 Difference]: With dead ends: 3388 [2020-10-13 14:14:42,765 INFO L226 Difference]: Without dead ends: 2989 [2020-10-13 14:14:42,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-10-13 14:14:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1329. [2020-10-13 14:14:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-10-13 14:14:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1835 transitions. [2020-10-13 14:14:42,846 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1835 transitions. Word has length 64 [2020-10-13 14:14:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:42,847 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1835 transitions. [2020-10-13 14:14:42,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1835 transitions. [2020-10-13 14:14:42,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:42,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:42,849 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] [2020-10-13 14:14:42,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:14:42,850 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:42,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:42,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1688705004, now seen corresponding path program 1 times [2020-10-13 14:14:42,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:42,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744206644] [2020-10-13 14:14:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:43,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:47,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:47,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:14:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 14:14:47,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:47,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:47,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:47,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:14:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:48,754 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:48,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:48,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:14:48,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:48,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744206644] [2020-10-13 14:14:48,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:48,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:48,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537205799] [2020-10-13 14:14:48,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:48,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:48,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:48,800 INFO L87 Difference]: Start difference. First operand 1329 states and 1835 transitions. Second operand 7 states. [2020-10-13 14:14:49,423 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:14:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:52,285 INFO L93 Difference]: Finished difference Result 4077 states and 5854 transitions. [2020-10-13 14:14:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:52,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:14:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:52,301 INFO L225 Difference]: With dead ends: 4077 [2020-10-13 14:14:52,301 INFO L226 Difference]: Without dead ends: 3602 [2020-10-13 14:14:52,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2020-10-13 14:14:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 1552. [2020-10-13 14:14:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-10-13 14:14:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2171 transitions. [2020-10-13 14:14:52,396 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2171 transitions. Word has length 64 [2020-10-13 14:14:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:52,396 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2171 transitions. [2020-10-13 14:14:52,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2171 transitions. [2020-10-13 14:14:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:52,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:52,399 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] [2020-10-13 14:14:52,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:14:52,399 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1515414427, now seen corresponding path program 1 times [2020-10-13 14:14:52,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:52,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053337478] [2020-10-13 14:14:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:57,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:57,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:57,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:14:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:14:57,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:14:57,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:58,367 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:14:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:58,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 14:14:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:14:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:58,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053337478] [2020-10-13 14:14:58,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:58,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:58,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325460975] [2020-10-13 14:14:58,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:58,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:58,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:58,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:58,450 INFO L87 Difference]: Start difference. First operand 1552 states and 2171 transitions. Second operand 7 states. [2020-10-13 14:14:59,140 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:15:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:02,137 INFO L93 Difference]: Finished difference Result 4490 states and 6484 transitions. [2020-10-13 14:15:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:15:02,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:15:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:02,153 INFO L225 Difference]: With dead ends: 4490 [2020-10-13 14:15:02,154 INFO L226 Difference]: Without dead ends: 4015 [2020-10-13 14:15:02,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:15:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2020-10-13 14:15:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 1880. [2020-10-13 14:15:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2020-10-13 14:15:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2660 transitions. [2020-10-13 14:15:02,278 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2660 transitions. Word has length 64 [2020-10-13 14:15:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:02,279 INFO L479 AbstractCegarLoop]: Abstraction has 1880 states and 2660 transitions. [2020-10-13 14:15:02,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:15:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2660 transitions. [2020-10-13 14:15:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:15:02,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:02,281 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] [2020-10-13 14:15:02,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:15:02,281 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:02,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1702120036, now seen corresponding path program 1 times [2020-10-13 14:15:02,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:02,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752085652] [2020-10-13 14:15:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:07,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:07,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:15:07,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:15:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:15:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:15:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:15:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:08,123 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:08,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:08,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:08,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:08,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:15:08,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:08,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:15:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:08,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752085652] [2020-10-13 14:15:08,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:08,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:15:08,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535039310] [2020-10-13 14:15:08,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:15:08,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:15:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:15:08,190 INFO L87 Difference]: Start difference. First operand 1880 states and 2660 transitions. Second operand 7 states. [2020-10-13 14:15:08,816 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-13 14:15:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:11,690 INFO L93 Difference]: Finished difference Result 4881 states and 7118 transitions. [2020-10-13 14:15:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:15:11,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:15:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:11,705 INFO L225 Difference]: With dead ends: 4881 [2020-10-13 14:15:11,705 INFO L226 Difference]: Without dead ends: 3885 [2020-10-13 14:15:11,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:15:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2020-10-13 14:15:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 1745. [2020-10-13 14:15:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2020-10-13 14:15:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2464 transitions. [2020-10-13 14:15:11,831 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2464 transitions. Word has length 64 [2020-10-13 14:15:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:11,831 INFO L479 AbstractCegarLoop]: Abstraction has 1745 states and 2464 transitions. [2020-10-13 14:15:11,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:15:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2464 transitions. [2020-10-13 14:15:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:11,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:11,833 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] [2020-10-13 14:15:11,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:15:11,834 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1819056989, now seen corresponding path program 1 times [2020-10-13 14:15:11,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:11,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519185095] [2020-10-13 14:15:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:11,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:16,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:16,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:15:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:15:16,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:15:16,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:17,638 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 14:15:17,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:17,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519185095] [2020-10-13 14:15:17,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:17,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:17,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380712162] [2020-10-13 14:15:17,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:17,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:17,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:17,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:17,715 INFO L87 Difference]: Start difference. First operand 1745 states and 2464 transitions. Second operand 6 states. [2020-10-13 14:15:18,342 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-13 14:15:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:20,361 INFO L93 Difference]: Finished difference Result 2882 states and 4081 transitions. [2020-10-13 14:15:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:20,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:20,374 INFO L225 Difference]: With dead ends: 2882 [2020-10-13 14:15:20,374 INFO L226 Difference]: Without dead ends: 2325 [2020-10-13 14:15:20,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2020-10-13 14:15:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1572. [2020-10-13 14:15:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-10-13 14:15:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2191 transitions. [2020-10-13 14:15:20,519 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2191 transitions. Word has length 66 [2020-10-13 14:15:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:20,520 INFO L479 AbstractCegarLoop]: Abstraction has 1572 states and 2191 transitions. [2020-10-13 14:15:20,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2191 transitions. [2020-10-13 14:15:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:20,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:20,529 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] [2020-10-13 14:15:20,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:15:20,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:20,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:20,530 INFO L82 PathProgramCache]: Analyzing trace with hash 978887721, now seen corresponding path program 1 times [2020-10-13 14:15:20,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:20,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061490593] [2020-10-13 14:15:20,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:25,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:15:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:15:25,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:15:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:26,155 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:26,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:15:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:26,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061490593] [2020-10-13 14:15:26,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:26,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:26,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969148858] [2020-10-13 14:15:26,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:26,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:26,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:26,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:26,215 INFO L87 Difference]: Start difference. First operand 1572 states and 2191 transitions. Second operand 6 states. [2020-10-13 14:15:26,882 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:15:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:28,433 INFO L93 Difference]: Finished difference Result 2415 states and 3443 transitions. [2020-10-13 14:15:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:28,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:28,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:28,439 INFO L225 Difference]: With dead ends: 2415 [2020-10-13 14:15:28,439 INFO L226 Difference]: Without dead ends: 1422 [2020-10-13 14:15:28,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:15:28,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2020-10-13 14:15:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 910. [2020-10-13 14:15:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-10-13 14:15:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1253 transitions. [2020-10-13 14:15:28,544 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1253 transitions. Word has length 66 [2020-10-13 14:15:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:28,544 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1253 transitions. [2020-10-13 14:15:28,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1253 transitions. [2020-10-13 14:15:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:28,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:28,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:28,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:15:28,547 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:28,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2117479103, now seen corresponding path program 1 times [2020-10-13 14:15:28,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:28,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341610338] [2020-10-13 14:15:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:33,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:33,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:33,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:15:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:15:33,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:15:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:34,189 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:34,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:34,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:34,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:15:34,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:34,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341610338] [2020-10-13 14:15:34,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:34,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:34,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495703428] [2020-10-13 14:15:34,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:34,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:34,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:34,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:34,243 INFO L87 Difference]: Start difference. First operand 910 states and 1253 transitions. Second operand 6 states. [2020-10-13 14:15:34,871 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-13 14:15:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:36,396 INFO L93 Difference]: Finished difference Result 1421 states and 1961 transitions. [2020-10-13 14:15:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:36,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:36,400 INFO L225 Difference]: With dead ends: 1421 [2020-10-13 14:15:36,400 INFO L226 Difference]: Without dead ends: 893 [2020-10-13 14:15:36,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-10-13 14:15:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 848. [2020-10-13 14:15:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-10-13 14:15:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1161 transitions. [2020-10-13 14:15:36,494 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1161 transitions. Word has length 66 [2020-10-13 14:15:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:36,495 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1161 transitions. [2020-10-13 14:15:36,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1161 transitions. [2020-10-13 14:15:36,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:36,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:36,496 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] [2020-10-13 14:15:36,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:15:36,497 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:36,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1275684332, now seen corresponding path program 1 times [2020-10-13 14:15:36,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:36,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173150260] [2020-10-13 14:15:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:36,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:36,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:41,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:41,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:41,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:15:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:15:41,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:41,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:15:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:42,148 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:42,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:42,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:42,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 14:15:42,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:42,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173150260] [2020-10-13 14:15:42,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:42,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:42,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298085059] [2020-10-13 14:15:42,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:42,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:42,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:42,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:42,215 INFO L87 Difference]: Start difference. First operand 848 states and 1161 transitions. Second operand 6 states. [2020-10-13 14:15:42,836 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:15:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:44,110 INFO L93 Difference]: Finished difference Result 1337 states and 1864 transitions. [2020-10-13 14:15:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:44,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:44,113 INFO L225 Difference]: With dead ends: 1337 [2020-10-13 14:15:44,113 INFO L226 Difference]: Without dead ends: 781 [2020-10-13 14:15:44,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:15:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-10-13 14:15:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 486. [2020-10-13 14:15:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-13 14:15:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 647 transitions. [2020-10-13 14:15:44,187 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 647 transitions. Word has length 66 [2020-10-13 14:15:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:44,187 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 647 transitions. [2020-10-13 14:15:44,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 647 transitions. [2020-10-13 14:15:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:15:44,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:44,188 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] [2020-10-13 14:15:44,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:15:44,188 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash -805224888, now seen corresponding path program 1 times [2020-10-13 14:15:44,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:44,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890041368] [2020-10-13 14:15:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:49,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:15:49,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:15:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:15:49,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:15:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:15:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:49,990 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:15:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:50,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:15:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:50,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890041368] [2020-10-13 14:15:50,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:50,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:50,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132670334] [2020-10-13 14:15:50,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:50,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:50,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:50,045 INFO L87 Difference]: Start difference. First operand 486 states and 647 transitions. Second operand 11 states. [2020-10-13 14:15:51,580 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 338 DAG size of output: 336 [2020-10-13 14:15:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:57,144 INFO L93 Difference]: Finished difference Result 3325 states and 4800 transitions. [2020-10-13 14:15:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:15:57,144 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-13 14:15:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:57,157 INFO L225 Difference]: With dead ends: 3325 [2020-10-13 14:15:57,157 INFO L226 Difference]: Without dead ends: 3105 [2020-10-13 14:15:57,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 14:15:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2020-10-13 14:15:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 486. [2020-10-13 14:15:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-13 14:15:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 646 transitions. [2020-10-13 14:15:57,277 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 646 transitions. Word has length 68 [2020-10-13 14:15:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:57,277 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 646 transitions. [2020-10-13 14:15:57,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 646 transitions. [2020-10-13 14:15:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:15:57,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:57,279 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] [2020-10-13 14:15:57,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:15:57,279 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash -507482968, now seen corresponding path program 1 times [2020-10-13 14:15:57,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:57,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710848343] [2020-10-13 14:15:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:02,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:02,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:16:02,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:16:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:16:02,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:16:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:16:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:16:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:03,058 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:03,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:03,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:16:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:03,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710848343] [2020-10-13 14:16:03,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:03,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:16:03,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146270629] [2020-10-13 14:16:03,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:16:03,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:03,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:16:03,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:16:03,095 INFO L87 Difference]: Start difference. First operand 486 states and 646 transitions. Second operand 10 states. [2020-10-13 14:16:03,852 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2020-10-13 14:16:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:05,972 INFO L93 Difference]: Finished difference Result 1198 states and 1672 transitions. [2020-10-13 14:16:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:16:05,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-13 14:16:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:05,977 INFO L225 Difference]: With dead ends: 1198 [2020-10-13 14:16:05,977 INFO L226 Difference]: Without dead ends: 949 [2020-10-13 14:16:05,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:16:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-13 14:16:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 486. [2020-10-13 14:16:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-13 14:16:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 645 transitions. [2020-10-13 14:16:06,052 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 645 transitions. Word has length 68 [2020-10-13 14:16:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:06,052 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 645 transitions. [2020-10-13 14:16:06,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:16:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 645 transitions. [2020-10-13 14:16:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:16:06,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:06,053 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] [2020-10-13 14:16:06,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:16:06,054 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:06,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1103221256, now seen corresponding path program 1 times [2020-10-13 14:16:06,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:06,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973692051] [2020-10-13 14:16:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:16:11,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:16:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:16:11,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:16:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:16:11,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:16:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:11,688 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:11,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:11,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:11,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:11,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:11,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:16:11,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:11,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:11,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973692051] [2020-10-13 14:16:11,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:11,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:16:11,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836142210] [2020-10-13 14:16:11,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:16:11,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:11,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:16:11,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:16:11,724 INFO L87 Difference]: Start difference. First operand 486 states and 645 transitions. Second operand 7 states. [2020-10-13 14:16:12,364 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2020-10-13 14:16:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:13,815 INFO L93 Difference]: Finished difference Result 935 states and 1258 transitions. [2020-10-13 14:16:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:16:13,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:16:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:13,817 INFO L225 Difference]: With dead ends: 935 [2020-10-13 14:16:13,817 INFO L226 Difference]: Without dead ends: 634 [2020-10-13 14:16:13,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-10-13 14:16:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 486. [2020-10-13 14:16:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-13 14:16:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 644 transitions. [2020-10-13 14:16:13,892 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 644 transitions. Word has length 68 [2020-10-13 14:16:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:13,892 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 644 transitions. [2020-10-13 14:16:13,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:16:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 644 transitions. [2020-10-13 14:16:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:16:13,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:13,893 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] [2020-10-13 14:16:13,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:16:13,894 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:13,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:13,894 INFO L82 PathProgramCache]: Analyzing trace with hash 942912377, now seen corresponding path program 1 times [2020-10-13 14:16:13,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:13,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033722829] [2020-10-13 14:16:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:18,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:18,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:16:18,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:16:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 14:16:18,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:16:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:16:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:16:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:19,670 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:19,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:19,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:19,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:16:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:19,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033722829] [2020-10-13 14:16:19,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:19,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:16:19,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226620640] [2020-10-13 14:16:19,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:16:19,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:19,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:16:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:16:19,709 INFO L87 Difference]: Start difference. First operand 486 states and 644 transitions. Second operand 10 states. [2020-10-13 14:16:20,315 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:16:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:22,423 INFO L93 Difference]: Finished difference Result 1152 states and 1615 transitions. [2020-10-13 14:16:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:22,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-13 14:16:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:22,426 INFO L225 Difference]: With dead ends: 1152 [2020-10-13 14:16:22,427 INFO L226 Difference]: Without dead ends: 915 [2020-10-13 14:16:22,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:16:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-10-13 14:16:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 455. [2020-10-13 14:16:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-13 14:16:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 605 transitions. [2020-10-13 14:16:22,530 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 605 transitions. Word has length 69 [2020-10-13 14:16:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:22,530 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 605 transitions. [2020-10-13 14:16:22,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:16:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 605 transitions. [2020-10-13 14:16:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:16:22,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:22,532 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] [2020-10-13 14:16:22,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:16:22,532 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:22,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1996212909, now seen corresponding path program 1 times [2020-10-13 14:16:22,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:22,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028949814] [2020-10-13 14:16:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:26,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:26,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:27,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:16:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:16:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:16:27,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:16:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:28,287 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:28,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:28,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:28,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:28,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:16:28,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:28,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:28,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028949814] [2020-10-13 14:16:28,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:28,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:28,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726088114] [2020-10-13 14:16:28,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:28,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:28,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:28,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:28,321 INFO L87 Difference]: Start difference. First operand 455 states and 605 transitions. Second operand 11 states. [2020-10-13 14:16:29,015 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-13 14:16:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:33,873 INFO L93 Difference]: Finished difference Result 2751 states and 3931 transitions. [2020-10-13 14:16:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:16:33,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:16:33,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:33,878 INFO L225 Difference]: With dead ends: 2751 [2020-10-13 14:16:33,878 INFO L226 Difference]: Without dead ends: 2745 [2020-10-13 14:16:33,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:16:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2020-10-13 14:16:33,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 455. [2020-10-13 14:16:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-13 14:16:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 603 transitions. [2020-10-13 14:16:33,971 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 603 transitions. Word has length 70 [2020-10-13 14:16:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:33,971 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 603 transitions. [2020-10-13 14:16:33,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 603 transitions. [2020-10-13 14:16:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:16:33,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:33,972 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] [2020-10-13 14:16:33,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:16:33,972 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:33,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2126596941, now seen corresponding path program 1 times [2020-10-13 14:16:33,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:33,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358679443] [2020-10-13 14:16:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:39,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:16:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:16:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:16:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:16:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:16:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:39,751 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:39,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:39,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:39,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:39,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:16:39,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:39,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358679443] [2020-10-13 14:16:39,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:39,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:39,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191250762] [2020-10-13 14:16:39,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:39,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:39,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:39,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:39,796 INFO L87 Difference]: Start difference. First operand 455 states and 603 transitions. Second operand 11 states. [2020-10-13 14:16:40,476 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2020-10-13 14:16:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:46,112 INFO L93 Difference]: Finished difference Result 3125 states and 4483 transitions. [2020-10-13 14:16:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:16:46,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:16:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:46,118 INFO L225 Difference]: With dead ends: 3125 [2020-10-13 14:16:46,118 INFO L226 Difference]: Without dead ends: 3106 [2020-10-13 14:16:46,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:16:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2020-10-13 14:16:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 455. [2020-10-13 14:16:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-13 14:16:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 601 transitions. [2020-10-13 14:16:46,279 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 601 transitions. Word has length 70 [2020-10-13 14:16:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:46,280 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 601 transitions. [2020-10-13 14:16:46,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 601 transitions. [2020-10-13 14:16:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:16:46,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:46,281 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] [2020-10-13 14:16:46,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:16:46,281 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash -771898835, now seen corresponding path program 1 times [2020-10-13 14:16:46,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:46,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740218830] [2020-10-13 14:16:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:51,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:16:51,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:16:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:16:51,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:16:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:52,023 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:16:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:52,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:52,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:52,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:16:52,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:52,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740218830] [2020-10-13 14:16:52,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:52,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:52,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860574959] [2020-10-13 14:16:52,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:52,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:52,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:52,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:52,061 INFO L87 Difference]: Start difference. First operand 455 states and 601 transitions. Second operand 11 states. [2020-10-13 14:16:52,717 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:16:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:54,889 INFO L93 Difference]: Finished difference Result 1527 states and 2141 transitions. [2020-10-13 14:16:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:16:54,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:16:54,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:54,893 INFO L225 Difference]: With dead ends: 1527 [2020-10-13 14:16:54,893 INFO L226 Difference]: Without dead ends: 1315 [2020-10-13 14:16:54,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:16:54,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-13 14:16:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 445. [2020-10-13 14:16:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-13 14:16:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 586 transitions. [2020-10-13 14:16:54,985 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 586 transitions. Word has length 70 [2020-10-13 14:16:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:54,986 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 586 transitions. [2020-10-13 14:16:54,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 586 transitions. [2020-10-13 14:16:54,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:16:54,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:54,987 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] [2020-10-13 14:16:54,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:16:54,987 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:54,987 INFO L82 PathProgramCache]: Analyzing trace with hash -456044659, now seen corresponding path program 1 times [2020-10-13 14:16:54,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:54,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253595435] [2020-10-13 14:16:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:00,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:00,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:17:00,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:17:00,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:17:00,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:17:00,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:00,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:17:00,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:00,688 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:00,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:00,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:17:00,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:00,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253595435] [2020-10-13 14:17:00,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:00,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:17:00,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481279619] [2020-10-13 14:17:00,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:17:00,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:00,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:17:00,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:17:00,723 INFO L87 Difference]: Start difference. First operand 445 states and 586 transitions. Second operand 8 states. [2020-10-13 14:17:01,371 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-10-13 14:17:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:02,428 INFO L93 Difference]: Finished difference Result 781 states and 1073 transitions. [2020-10-13 14:17:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:17:02,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 14:17:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:02,429 INFO L225 Difference]: With dead ends: 781 [2020-10-13 14:17:02,429 INFO L226 Difference]: Without dead ends: 527 [2020-10-13 14:17:02,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:17:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-13 14:17:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 397. [2020-10-13 14:17:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-13 14:17:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 527 transitions. [2020-10-13 14:17:02,567 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 527 transitions. Word has length 70 [2020-10-13 14:17:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:02,568 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 527 transitions. [2020-10-13 14:17:02,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:17:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 527 transitions. [2020-10-13 14:17:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:17:02,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:02,569 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] [2020-10-13 14:17:02,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:17:02,569 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:02,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:02,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1980465196, now seen corresponding path program 1 times [2020-10-13 14:17:02,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:02,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100387575] [2020-10-13 14:17:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:02,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:07,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:17:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:08,479 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:08,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:08,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:08,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:17:08,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:08,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100387575] [2020-10-13 14:17:08,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:08,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:08,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840665669] [2020-10-13 14:17:08,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:08,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:08,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:08,513 INFO L87 Difference]: Start difference. First operand 397 states and 527 transitions. Second operand 11 states. [2020-10-13 14:17:09,133 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:17:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:11,382 INFO L93 Difference]: Finished difference Result 1616 states and 2298 transitions. [2020-10-13 14:17:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:17:11,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-13 14:17:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:11,387 INFO L225 Difference]: With dead ends: 1616 [2020-10-13 14:17:11,387 INFO L226 Difference]: Without dead ends: 1393 [2020-10-13 14:17:11,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:17:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2020-10-13 14:17:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 376. [2020-10-13 14:17:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-13 14:17:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 500 transitions. [2020-10-13 14:17:11,530 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 500 transitions. Word has length 71 [2020-10-13 14:17:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:11,531 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 500 transitions. [2020-10-13 14:17:11,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 500 transitions. [2020-10-13 14:17:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:17:11,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:11,532 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] [2020-10-13 14:17:11,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:17:11,533 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:11,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:11,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2011917774, now seen corresponding path program 1 times [2020-10-13 14:17:11,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:11,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958022476] [2020-10-13 14:17:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:15,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:15,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:17:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:17:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4154 [2020-10-13 14:17:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:17:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:17:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:16,402 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:16,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:16,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:17:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:16,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958022476] [2020-10-13 14:17:16,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:16,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:16,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425842798] [2020-10-13 14:17:16,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:16,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:16,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:16,437 INFO L87 Difference]: Start difference. First operand 376 states and 500 transitions. Second operand 11 states. [2020-10-13 14:17:17,068 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-13 14:17:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:19,279 INFO L93 Difference]: Finished difference Result 883 states and 1220 transitions. [2020-10-13 14:17:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:17:19,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-13 14:17:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:19,282 INFO L225 Difference]: With dead ends: 883 [2020-10-13 14:17:19,282 INFO L226 Difference]: Without dead ends: 859 [2020-10-13 14:17:19,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:17:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-10-13 14:17:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 376. [2020-10-13 14:17:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-13 14:17:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 499 transitions. [2020-10-13 14:17:19,381 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 499 transitions. Word has length 72 [2020-10-13 14:17:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:19,381 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 499 transitions. [2020-10-13 14:17:19,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 499 transitions. [2020-10-13 14:17:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:17:19,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:19,382 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] [2020-10-13 14:17:19,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:17:19,382 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1798787661, now seen corresponding path program 1 times [2020-10-13 14:17:19,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:19,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773956854] [2020-10-13 14:17:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:19,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:17:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:17:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:17:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:17:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:17:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:25,124 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:25,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:25,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:25,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:25,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:17:25,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:25,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:25,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:25,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:25,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773956854] [2020-10-13 14:17:25,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:25,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:25,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173052852] [2020-10-13 14:17:25,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:25,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:25,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:25,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:25,158 INFO L87 Difference]: Start difference. First operand 376 states and 499 transitions. Second operand 11 states. [2020-10-13 14:17:26,434 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 323 DAG size of output: 322 [2020-10-13 14:17:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:29,039 INFO L93 Difference]: Finished difference Result 1121 states and 1564 transitions. [2020-10-13 14:17:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:17:29,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-13 14:17:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:29,041 INFO L225 Difference]: With dead ends: 1121 [2020-10-13 14:17:29,042 INFO L226 Difference]: Without dead ends: 867 [2020-10-13 14:17:29,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:17:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-10-13 14:17:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 376. [2020-10-13 14:17:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-13 14:17:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 498 transitions. [2020-10-13 14:17:29,188 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 498 transitions. Word has length 72 [2020-10-13 14:17:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:29,188 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 498 transitions. [2020-10-13 14:17:29,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 498 transitions. [2020-10-13 14:17:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 14:17:29,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:29,189 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] [2020-10-13 14:17:29,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:17:29,190 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:29,190 INFO L82 PathProgramCache]: Analyzing trace with hash -810477578, now seen corresponding path program 1 times [2020-10-13 14:17:29,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:29,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360193943] [2020-10-13 14:17:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:30,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 14:17:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:31,180 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:31,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:17:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:31,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360193943] [2020-10-13 14:17:31,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:31,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:17:31,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902135979] [2020-10-13 14:17:31,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:17:31,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:31,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:17:31,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:17:31,234 INFO L87 Difference]: Start difference. First operand 376 states and 498 transitions. Second operand 9 states. [2020-10-13 14:17:31,917 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2020-10-13 14:17:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:33,040 INFO L93 Difference]: Finished difference Result 500 states and 673 transitions. [2020-10-13 14:17:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:17:33,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-13 14:17:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:33,043 INFO L225 Difference]: With dead ends: 500 [2020-10-13 14:17:33,043 INFO L226 Difference]: Without dead ends: 476 [2020-10-13 14:17:33,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:17:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-13 14:17:33,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 352. [2020-10-13 14:17:33,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-13 14:17:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 471 transitions. [2020-10-13 14:17:33,149 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 471 transitions. Word has length 73 [2020-10-13 14:17:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:33,150 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 471 transitions. [2020-10-13 14:17:33,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:17:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 471 transitions. [2020-10-13 14:17:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 14:17:33,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:33,151 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] [2020-10-13 14:17:33,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:17:33,151 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:33,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:33,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1294739439, now seen corresponding path program 1 times [2020-10-13 14:17:33,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:33,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799399719] [2020-10-13 14:17:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:33,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:38,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 14:17:38,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:17:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:17:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:17:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:17:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:38,809 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:38,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:38,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:17:38,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:38,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:38,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799399719] [2020-10-13 14:17:38,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:38,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:17:38,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510494952] [2020-10-13 14:17:38,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:17:38,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:17:38,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:17:38,846 INFO L87 Difference]: Start difference. First operand 352 states and 471 transitions. Second operand 8 states. [2020-10-13 14:17:39,497 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 14:17:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:41,062 INFO L93 Difference]: Finished difference Result 734 states and 1013 transitions. [2020-10-13 14:17:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:17:41,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-10-13 14:17:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:41,064 INFO L225 Difference]: With dead ends: 734 [2020-10-13 14:17:41,064 INFO L226 Difference]: Without dead ends: 480 [2020-10-13 14:17:41,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:17:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-13 14:17:41,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 352. [2020-10-13 14:17:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-13 14:17:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 470 transitions. [2020-10-13 14:17:41,173 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 470 transitions. Word has length 73 [2020-10-13 14:17:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:41,173 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 470 transitions. [2020-10-13 14:17:41,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:17:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 470 transitions. [2020-10-13 14:17:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 14:17:41,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:41,174 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] [2020-10-13 14:17:41,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:17:41,174 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:41,175 INFO L82 PathProgramCache]: Analyzing trace with hash 231209394, now seen corresponding path program 1 times [2020-10-13 14:17:41,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:41,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694611638] [2020-10-13 14:17:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:41,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:43,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:17:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:43,760 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:43,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:43,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:43,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:17:43,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:43,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694611638] [2020-10-13 14:17:43,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:43,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:17:43,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880422145] [2020-10-13 14:17:43,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:17:43,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:43,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:17:43,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:17:43,795 INFO L87 Difference]: Start difference. First operand 352 states and 470 transitions. Second operand 12 states. [2020-10-13 14:17:45,158 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 329 DAG size of output: 329 [2020-10-13 14:17:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:49,160 INFO L93 Difference]: Finished difference Result 1787 states and 2539 transitions. [2020-10-13 14:17:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:17:49,160 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-10-13 14:17:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:49,162 INFO L225 Difference]: With dead ends: 1787 [2020-10-13 14:17:49,163 INFO L226 Difference]: Without dead ends: 1531 [2020-10-13 14:17:49,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2020-10-13 14:17:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-10-13 14:17:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 362. [2020-10-13 14:17:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-13 14:17:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 480 transitions. [2020-10-13 14:17:49,270 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 480 transitions. Word has length 74 [2020-10-13 14:17:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:49,270 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 480 transitions. [2020-10-13 14:17:49,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:17:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 480 transitions. [2020-10-13 14:17:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 14:17:49,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:49,271 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] [2020-10-13 14:17:49,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:17:49,271 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1948728786, now seen corresponding path program 1 times [2020-10-13 14:17:49,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:49,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278332434] [2020-10-13 14:17:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:49,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:51,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 14:17:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:17:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4312 [2020-10-13 14:17:53,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:17:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:17:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:54,321 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:17:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:54,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:54,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:17:54,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:54,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278332434] [2020-10-13 14:17:54,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:54,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:54,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765348230] [2020-10-13 14:17:54,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:54,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:54,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:54,359 INFO L87 Difference]: Start difference. First operand 362 states and 480 transitions. Second operand 11 states. [2020-10-13 14:17:55,051 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 326