/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.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:24:45,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:24:45,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:24:45,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:24:45,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:24:45,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:24:45,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:24:45,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:24:45,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:24:45,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:24:45,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:24:45,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:24:45,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:24:45,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:24:45,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:24:45,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:24:45,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:24:45,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:24:45,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:24:45,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:24:45,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:24:45,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:24:45,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:24:45,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:24:45,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:24:45,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:24:45,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:24:45,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:24:45,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:24:45,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:24:45,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:24:45,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:24:45,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:24:45,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:24:45,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:24:45,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:24:45,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:24:45,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:24:45,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:24:45,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:24:45,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:24:45,216 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 14:24:45,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:24:45,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:24:45,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:24:45,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:24:45,239 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:24:45,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:24:45,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:24:45,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:24:45,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:24:45,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:24:45,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:24:45,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:24:45,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:24:45,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:24:45,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:24:45,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:24:45,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:24:45,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:24:45,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:24:45,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:24:45,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:24:45,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:24:45,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:24:45,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:24:45,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:24:45,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:24:45,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:24:45,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:24:45,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:24:45,243 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 14:24:45,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:24:45,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:24:45,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:24:45,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:24:45,587 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:24:45,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-13 14:24:45,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98c5db8d8/9cfe858bffec4f94853ceb918fbc9d25/FLAG625cabcbc [2020-10-13 14:24:46,160 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:24:46,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-13 14:24:46,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98c5db8d8/9cfe858bffec4f94853ceb918fbc9d25/FLAG625cabcbc [2020-10-13 14:24:46,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98c5db8d8/9cfe858bffec4f94853ceb918fbc9d25 [2020-10-13 14:24:46,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:24:46,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:24:46,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:24:46,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:24:46,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:24:46,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:24:46" (1/1) ... [2020-10-13 14:24:46,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f72e2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:46, skipping insertion in model container [2020-10-13 14:24:46,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:24:46" (1/1) ... [2020-10-13 14:24:46,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:24:46,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:24:47,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:24:47,122 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:24:47,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:24:47,288 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:24:47,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47 WrapperNode [2020-10-13 14:24:47,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:24:47,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:24:47,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:24:47,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:24:47,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (1/1) ... [2020-10-13 14:24:47,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (1/1) ... [2020-10-13 14:24:47,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (1/1) ... [2020-10-13 14:24:47,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (1/1) ... [2020-10-13 14:24:47,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (1/1) ... [2020-10-13 14:24:47,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (1/1) ... [2020-10-13 14:24:47,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (1/1) ... [2020-10-13 14:24:47,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:24:47,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:24:47,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:24:47,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:24:47,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (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 14:24:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:24:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:24:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:24:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:24:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:24:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:24:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:24:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:24:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:24:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:24:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:24:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:24:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:24:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:24:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:24:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:24:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:24:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:24:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:24:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:24:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:24:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:24:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:24:48,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:24:48,276 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:24:48,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:24:48 BoogieIcfgContainer [2020-10-13 14:24:48,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:24:48,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:24:48,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:24:48,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:24:48,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:24:46" (1/3) ... [2020-10-13 14:24:48,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f5a815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:24:48, skipping insertion in model container [2020-10-13 14:24:48,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:24:47" (2/3) ... [2020-10-13 14:24:48,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f5a815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:24:48, skipping insertion in model container [2020-10-13 14:24:48,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:24:48" (3/3) ... [2020-10-13 14:24:48,312 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-13 14:24:48,322 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:24:48,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:24:48,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:24:48,370 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:24:48,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:24:48,371 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:24:48,371 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:24:48,371 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:24:48,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:24:48,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:24:48,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:24:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-13 14:24:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 14:24:48,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:48,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:24:48,412 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:48,418 INFO L82 PathProgramCache]: Analyzing trace with hash -541697796, now seen corresponding path program 1 times [2020-10-13 14:24:48,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:48,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701754240] [2020-10-13 14:24:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:53,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:53,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 14:24:53,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:24:53,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:24:53,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:24:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:24:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:24:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:24:54,153 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:24:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:24:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:54,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:24:54,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:24:54,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:24:54,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:24:54,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:24:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:24:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:24:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:24:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:24:54,208 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 14:24:54,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701754240] [2020-10-13 14:24:54,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:24:54,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:24:54,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448791852] [2020-10-13 14:24:54,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:24:54,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:24:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:24:54,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:24:54,238 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 7 states. [2020-10-13 14:24:54,517 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:24:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:24:56,367 INFO L93 Difference]: Finished difference Result 874 states and 1408 transitions. [2020-10-13 14:24:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:24:56,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-13 14:24:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:24:56,410 INFO L225 Difference]: With dead ends: 874 [2020-10-13 14:24:56,410 INFO L226 Difference]: Without dead ends: 726 [2020-10-13 14:24:56,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:24:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-10-13 14:24:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 361. [2020-10-13 14:24:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-13 14:24:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 528 transitions. [2020-10-13 14:24:56,542 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 528 transitions. Word has length 95 [2020-10-13 14:24:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:24:56,542 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 528 transitions. [2020-10-13 14:24:56,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:24:56,544 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 528 transitions. [2020-10-13 14:24:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 14:24:56,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:24:56,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:24:56,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:24:56,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:24:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:24:56,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1357515268, now seen corresponding path program 1 times [2020-10-13 14:24:56,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:24:56,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737801930] [2020-10-13 14:24:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:24:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:24:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:24:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:01,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:01,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 14:25:01,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:25:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:25:01,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:25:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:25:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:25:01,878 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:01,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:01,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:01,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:25:01,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:25:01,922 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 14:25:01,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737801930] [2020-10-13 14:25:01,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:01,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:01,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144542489] [2020-10-13 14:25:01,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:01,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:01,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:01,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:01,927 INFO L87 Difference]: Start difference. First operand 361 states and 528 transitions. Second operand 7 states. [2020-10-13 14:25:02,212 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:25:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:03,949 INFO L93 Difference]: Finished difference Result 2335 states and 3629 transitions. [2020-10-13 14:25:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:03,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-13 14:25:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:03,962 INFO L225 Difference]: With dead ends: 2335 [2020-10-13 14:25:03,962 INFO L226 Difference]: Without dead ends: 2033 [2020-10-13 14:25:03,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-10-13 14:25:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 911. [2020-10-13 14:25:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-13 14:25:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1384 transitions. [2020-10-13 14:25:04,046 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1384 transitions. Word has length 96 [2020-10-13 14:25:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:04,047 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1384 transitions. [2020-10-13 14:25:04,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1384 transitions. [2020-10-13 14:25:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:25:04,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:04,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:04,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:25:04,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash -139479876, now seen corresponding path program 1 times [2020-10-13 14:25:04,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:04,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258829131] [2020-10-13 14:25:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:09,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:09,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:25:09,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:25:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:25:09,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:25:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:25:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:09,306 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:09,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:09,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:09,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:25:09,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:09,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:09,352 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 14:25:09,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258829131] [2020-10-13 14:25:09,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:09,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:09,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351937504] [2020-10-13 14:25:09,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:09,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:09,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:09,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:09,358 INFO L87 Difference]: Start difference. First operand 911 states and 1384 transitions. Second operand 7 states. [2020-10-13 14:25:09,555 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:25:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:11,080 INFO L93 Difference]: Finished difference Result 4922 states and 7699 transitions. [2020-10-13 14:25:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:11,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:25:11,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:11,107 INFO L225 Difference]: With dead ends: 4922 [2020-10-13 14:25:11,111 INFO L226 Difference]: Without dead ends: 4407 [2020-10-13 14:25:11,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2020-10-13 14:25:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 1650. [2020-10-13 14:25:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1650 states. [2020-10-13 14:25:11,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2531 transitions. [2020-10-13 14:25:11,254 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2531 transitions. Word has length 97 [2020-10-13 14:25:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:11,257 INFO L479 AbstractCegarLoop]: Abstraction has 1650 states and 2531 transitions. [2020-10-13 14:25:11,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2531 transitions. [2020-10-13 14:25:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:25:11,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:11,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:11,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:25:11,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1321274571, now seen corresponding path program 1 times [2020-10-13 14:25:11,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:11,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239393779] [2020-10-13 14:25:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:11,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:11,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:16,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:16,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:25:16,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:25:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:25:16,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:25:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:25:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:25:16,523 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:16,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:25:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:16,565 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 14:25:16,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239393779] [2020-10-13 14:25:16,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:16,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:16,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137602366] [2020-10-13 14:25:16,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:16,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:16,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:16,569 INFO L87 Difference]: Start difference. First operand 1650 states and 2531 transitions. Second operand 7 states. [2020-10-13 14:25:16,871 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:25:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:19,172 INFO L93 Difference]: Finished difference Result 7722 states and 12077 transitions. [2020-10-13 14:25:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:19,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:25:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:19,219 INFO L225 Difference]: With dead ends: 7722 [2020-10-13 14:25:19,219 INFO L226 Difference]: Without dead ends: 6764 [2020-10-13 14:25:19,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2020-10-13 14:25:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 2190. [2020-10-13 14:25:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2190 states. [2020-10-13 14:25:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 3356 transitions. [2020-10-13 14:25:19,446 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 3356 transitions. Word has length 97 [2020-10-13 14:25:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:19,447 INFO L479 AbstractCegarLoop]: Abstraction has 2190 states and 3356 transitions. [2020-10-13 14:25:19,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 3356 transitions. [2020-10-13 14:25:19,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 14:25:19,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:19,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:19,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:25:19,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:19,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:19,451 INFO L82 PathProgramCache]: Analyzing trace with hash -130949892, now seen corresponding path program 1 times [2020-10-13 14:25:19,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:19,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17826694] [2020-10-13 14:25:19,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:19,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:24,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:24,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:24,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 14:25:24,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:25:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 14:25:24,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:25:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:25:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:24,727 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:24,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:24,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:24,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:25:24,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:25:24,766 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 14:25:24,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17826694] [2020-10-13 14:25:24,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:24,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:24,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411489697] [2020-10-13 14:25:24,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:24,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:24,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:24,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:24,769 INFO L87 Difference]: Start difference. First operand 2190 states and 3356 transitions. Second operand 7 states. [2020-10-13 14:25:24,942 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:25:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:26,689 INFO L93 Difference]: Finished difference Result 13357 states and 20761 transitions. [2020-10-13 14:25:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:26,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 14:25:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:26,748 INFO L225 Difference]: With dead ends: 13357 [2020-10-13 14:25:26,748 INFO L226 Difference]: Without dead ends: 11944 [2020-10-13 14:25:26,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11944 states. [2020-10-13 14:25:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11944 to 4272. [2020-10-13 14:25:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4272 states. [2020-10-13 14:25:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 6558 transitions. [2020-10-13 14:25:27,122 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 6558 transitions. Word has length 97 [2020-10-13 14:25:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:27,124 INFO L479 AbstractCegarLoop]: Abstraction has 4272 states and 6558 transitions. [2020-10-13 14:25:27,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 6558 transitions. [2020-10-13 14:25:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:25:27,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:27,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:27,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:25:27,129 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:27,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1026558404, now seen corresponding path program 1 times [2020-10-13 14:25:27,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:27,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800941654] [2020-10-13 14:25:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:27,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:27,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:32,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:25:32,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:32,366 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:32,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:32,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:32,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:32,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:25:32,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:32,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:32,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:32,404 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 14:25:32,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800941654] [2020-10-13 14:25:32,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:32,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:32,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324545796] [2020-10-13 14:25:32,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:32,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:32,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:32,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:32,407 INFO L87 Difference]: Start difference. First operand 4272 states and 6558 transitions. Second operand 7 states. [2020-10-13 14:25:32,620 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:25:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:34,573 INFO L93 Difference]: Finished difference Result 16444 states and 25490 transitions. [2020-10-13 14:25:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:34,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 14:25:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:34,604 INFO L225 Difference]: With dead ends: 16444 [2020-10-13 14:25:34,604 INFO L226 Difference]: Without dead ends: 13074 [2020-10-13 14:25:34,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2020-10-13 14:25:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 4190. [2020-10-13 14:25:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4190 states. [2020-10-13 14:25:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6432 transitions. [2020-10-13 14:25:35,018 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6432 transitions. Word has length 98 [2020-10-13 14:25:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:35,019 INFO L479 AbstractCegarLoop]: Abstraction has 4190 states and 6432 transitions. [2020-10-13 14:25:35,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6432 transitions. [2020-10-13 14:25:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:25:35,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:35,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:35,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:25:35,024 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:35,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1602276324, now seen corresponding path program 1 times [2020-10-13 14:25:35,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:35,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515229552] [2020-10-13 14:25:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:25:40,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:25:40,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:25:40,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:25:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:25:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:40,259 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:40,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:40,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:40,292 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 14:25:40,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515229552] [2020-10-13 14:25:40,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:40,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:40,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141405705] [2020-10-13 14:25:40,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:40,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:40,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:40,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:40,295 INFO L87 Difference]: Start difference. First operand 4190 states and 6432 transitions. Second operand 7 states. [2020-10-13 14:25:40,504 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:25:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:42,264 INFO L93 Difference]: Finished difference Result 14022 states and 21716 transitions. [2020-10-13 14:25:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:42,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 14:25:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:42,294 INFO L225 Difference]: With dead ends: 14022 [2020-10-13 14:25:42,294 INFO L226 Difference]: Without dead ends: 11804 [2020-10-13 14:25:42,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11804 states. [2020-10-13 14:25:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11804 to 4160. [2020-10-13 14:25:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4160 states. [2020-10-13 14:25:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 6389 transitions. [2020-10-13 14:25:42,839 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 6389 transitions. Word has length 98 [2020-10-13 14:25:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:42,839 INFO L479 AbstractCegarLoop]: Abstraction has 4160 states and 6389 transitions. [2020-10-13 14:25:42,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 6389 transitions. [2020-10-13 14:25:42,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 14:25:42,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:42,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:42,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:25:42,844 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:42,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash -141521877, now seen corresponding path program 1 times [2020-10-13 14:25:42,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:42,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703482608] [2020-10-13 14:25:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:25:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:48,075 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:48,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:48,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:48,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:25:48,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:25:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:25:48,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:48,107 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 14:25:48,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703482608] [2020-10-13 14:25:48,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:48,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:25:48,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902299307] [2020-10-13 14:25:48,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:25:48,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:48,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:25:48,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:25:48,110 INFO L87 Difference]: Start difference. First operand 4160 states and 6389 transitions. Second operand 7 states. [2020-10-13 14:25:48,328 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:25:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:50,548 INFO L93 Difference]: Finished difference Result 17170 states and 26663 transitions. [2020-10-13 14:25:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:25:50,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-13 14:25:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:50,574 INFO L225 Difference]: With dead ends: 17170 [2020-10-13 14:25:50,575 INFO L226 Difference]: Without dead ends: 14820 [2020-10-13 14:25:50,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:25:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14820 states. [2020-10-13 14:25:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14820 to 5406. [2020-10-13 14:25:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5406 states. [2020-10-13 14:25:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 8329 transitions. [2020-10-13 14:25:51,172 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 8329 transitions. Word has length 98 [2020-10-13 14:25:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:51,172 INFO L479 AbstractCegarLoop]: Abstraction has 5406 states and 8329 transitions. [2020-10-13 14:25:51,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:25:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 8329 transitions. [2020-10-13 14:25:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 14:25:51,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:51,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:51,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:25:51,177 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:51,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1370654517, now seen corresponding path program 1 times [2020-10-13 14:25:51,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:51,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448839115] [2020-10-13 14:25:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:52,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:52,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:54,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:54,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:56,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:25:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:56,441 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:25:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:25:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:56,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:25:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:25:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:25:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:25:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:25:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:25:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:25:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:25:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:25:56,495 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 14:25:56,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448839115] [2020-10-13 14:25:56,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:25:56,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:25:56,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755095613] [2020-10-13 14:25:56,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:25:56,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:25:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:25:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:25:56,498 INFO L87 Difference]: Start difference. First operand 5406 states and 8329 transitions. Second operand 6 states. [2020-10-13 14:25:56,704 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:25:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:25:58,071 INFO L93 Difference]: Finished difference Result 10607 states and 16383 transitions. [2020-10-13 14:25:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:25:58,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-13 14:25:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:25:58,085 INFO L225 Difference]: With dead ends: 10607 [2020-10-13 14:25:58,085 INFO L226 Difference]: Without dead ends: 7949 [2020-10-13 14:25:58,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:25:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7949 states. [2020-10-13 14:25:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7949 to 5463. [2020-10-13 14:25:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5463 states. [2020-10-13 14:25:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 8369 transitions. [2020-10-13 14:25:58,634 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 8369 transitions. Word has length 99 [2020-10-13 14:25:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:25:58,634 INFO L479 AbstractCegarLoop]: Abstraction has 5463 states and 8369 transitions. [2020-10-13 14:25:58,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:25:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 8369 transitions. [2020-10-13 14:25:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 14:25:58,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:25:58,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:25:58,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:25:58,640 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:25:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:25:58,640 INFO L82 PathProgramCache]: Analyzing trace with hash 899122428, now seen corresponding path program 1 times [2020-10-13 14:25:58,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:25:58,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093058649] [2020-10-13 14:25:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:25:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:25:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:25:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 14:26:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:26:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:26:03,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:26:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:26:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:26:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:03,881 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:26:03,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:03,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:03,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:03,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:26:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:26:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:26:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:03,908 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 14:26:03,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093058649] [2020-10-13 14:26:03,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:03,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:26:03,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221046961] [2020-10-13 14:26:03,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:26:03,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:03,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:26:03,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:26:03,910 INFO L87 Difference]: Start difference. First operand 5463 states and 8369 transitions. Second operand 7 states. [2020-10-13 14:26:04,120 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:26:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:06,897 INFO L93 Difference]: Finished difference Result 21647 states and 33353 transitions. [2020-10-13 14:26:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:26:06,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-13 14:26:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:06,917 INFO L225 Difference]: With dead ends: 21647 [2020-10-13 14:26:06,918 INFO L226 Difference]: Without dead ends: 17224 [2020-10-13 14:26:06,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:26:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17224 states. [2020-10-13 14:26:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17224 to 5422. [2020-10-13 14:26:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5422 states. [2020-10-13 14:26:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 8306 transitions. [2020-10-13 14:26:07,558 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 8306 transitions. Word has length 99 [2020-10-13 14:26:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:07,558 INFO L479 AbstractCegarLoop]: Abstraction has 5422 states and 8306 transitions. [2020-10-13 14:26:07,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:26:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 8306 transitions. [2020-10-13 14:26:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 14:26:07,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:07,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:26:07,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:26:07,563 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:07,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1664049884, now seen corresponding path program 1 times [2020-10-13 14:26:07,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:07,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769252153] [2020-10-13 14:26:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:07,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:08,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:10,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:12,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:12,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 14:26:12,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:26:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:26:12,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:26:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:26:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:26:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:12,789 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:26:12,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:12,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:12,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:12,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:26:12,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:12,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:26:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:26:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:12,816 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 14:26:12,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769252153] [2020-10-13 14:26:12,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:12,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:26:12,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573581965] [2020-10-13 14:26:12,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:26:12,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:26:12,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:26:12,817 INFO L87 Difference]: Start difference. First operand 5422 states and 8306 transitions. Second operand 7 states. [2020-10-13 14:26:13,021 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 14:26:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:15,925 INFO L93 Difference]: Finished difference Result 21806 states and 33610 transitions. [2020-10-13 14:26:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:26:15,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-13 14:26:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:15,949 INFO L225 Difference]: With dead ends: 21806 [2020-10-13 14:26:15,949 INFO L226 Difference]: Without dead ends: 17429 [2020-10-13 14:26:15,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:26:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17429 states. [2020-10-13 14:26:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17429 to 5397. [2020-10-13 14:26:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5397 states. [2020-10-13 14:26:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 8271 transitions. [2020-10-13 14:26:16,653 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 8271 transitions. Word has length 99 [2020-10-13 14:26:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:16,653 INFO L479 AbstractCegarLoop]: Abstraction has 5397 states and 8271 transitions. [2020-10-13 14:26:16,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:26:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 8271 transitions. [2020-10-13 14:26:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 14:26:16,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:16,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:26:16,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:26:16,658 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:16,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1170162965, now seen corresponding path program 1 times [2020-10-13 14:26:16,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:16,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023753466] [2020-10-13 14:26:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:16,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:17,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:21,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:21,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 14:26:21,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:26:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:26:21,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:26:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:26:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 14:26:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:21,907 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:26:21,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:21,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:21,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:21,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:26:21,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:26:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:26:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:26:21,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023753466] [2020-10-13 14:26:21,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:21,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:26:21,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235623363] [2020-10-13 14:26:21,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:26:21,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:21,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:26:21,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:26:21,945 INFO L87 Difference]: Start difference. First operand 5397 states and 8271 transitions. Second operand 6 states. [2020-10-13 14:26:22,158 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:26:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:23,421 INFO L93 Difference]: Finished difference Result 9987 states and 15361 transitions. [2020-10-13 14:26:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:26:23,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-13 14:26:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:23,436 INFO L225 Difference]: With dead ends: 9987 [2020-10-13 14:26:23,436 INFO L226 Difference]: Without dead ends: 5312 [2020-10-13 14:26:23,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:26:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2020-10-13 14:26:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 5310. [2020-10-13 14:26:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5310 states. [2020-10-13 14:26:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 8154 transitions. [2020-10-13 14:26:23,983 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 8154 transitions. Word has length 99 [2020-10-13 14:26:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:23,984 INFO L479 AbstractCegarLoop]: Abstraction has 5310 states and 8154 transitions. [2020-10-13 14:26:23,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:26:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 8154 transitions. [2020-10-13 14:26:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 14:26:23,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:23,987 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, 1, 1, 1, 1, 1, 1, 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 14:26:23,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:26:23,987 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:23,988 INFO L82 PathProgramCache]: Analyzing trace with hash 824547866, now seen corresponding path program 1 times [2020-10-13 14:26:23,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:23,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861379512] [2020-10-13 14:26:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:28,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:29,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:29,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 14:26:29,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:26:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:26:29,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:26:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 14:26:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:26:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:29,216 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:26:29,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:29,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:29,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:29,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:26:29,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:26:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:26:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:29,247 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 14:26:29,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861379512] [2020-10-13 14:26:29,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:29,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:26:29,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068648230] [2020-10-13 14:26:29,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:26:29,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:29,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:26:29,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:26:29,249 INFO L87 Difference]: Start difference. First operand 5310 states and 8154 transitions. Second operand 4 states. [2020-10-13 14:26:29,432 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 14:26:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:31,262 INFO L93 Difference]: Finished difference Result 14616 states and 22540 transitions. [2020-10-13 14:26:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:26:31,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-13 14:26:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:31,284 INFO L225 Difference]: With dead ends: 14616 [2020-10-13 14:26:31,284 INFO L226 Difference]: Without dead ends: 10390 [2020-10-13 14:26:31,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:26:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2020-10-13 14:26:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 10388. [2020-10-13 14:26:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10388 states. [2020-10-13 14:26:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 15882 transitions. [2020-10-13 14:26:32,782 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 15882 transitions. Word has length 100 [2020-10-13 14:26:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:32,782 INFO L479 AbstractCegarLoop]: Abstraction has 10388 states and 15882 transitions. [2020-10-13 14:26:32,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:26:32,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 15882 transitions. [2020-10-13 14:26:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:26:32,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:32,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:26:32,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:26:32,789 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:32,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1354912666, now seen corresponding path program 1 times [2020-10-13 14:26:32,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:32,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051950926] [2020-10-13 14:26:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:33,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 14:26:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:38,031 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:26:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:38,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:38,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:38,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:26:38,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:26:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:38,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:26:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:38,074 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 14:26:38,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051950926] [2020-10-13 14:26:38,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:38,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:26:38,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739838567] [2020-10-13 14:26:38,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:26:38,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:38,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:26:38,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:26:38,075 INFO L87 Difference]: Start difference. First operand 10388 states and 15882 transitions. Second operand 6 states. [2020-10-13 14:26:38,283 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:26:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:39,990 INFO L93 Difference]: Finished difference Result 19064 states and 29132 transitions. [2020-10-13 14:26:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:26:39,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-13 14:26:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:40,003 INFO L225 Difference]: With dead ends: 19064 [2020-10-13 14:26:40,003 INFO L226 Difference]: Without dead ends: 10095 [2020-10-13 14:26:40,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:26:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10095 states. [2020-10-13 14:26:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10095 to 10093. [2020-10-13 14:26:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10093 states. [2020-10-13 14:26:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10093 states to 10093 states and 15415 transitions. [2020-10-13 14:26:41,049 INFO L78 Accepts]: Start accepts. Automaton has 10093 states and 15415 transitions. Word has length 102 [2020-10-13 14:26:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:41,049 INFO L479 AbstractCegarLoop]: Abstraction has 10093 states and 15415 transitions. [2020-10-13 14:26:41,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:26:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 10093 states and 15415 transitions. [2020-10-13 14:26:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:26:41,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:41,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:26:41,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:26:41,053 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash 685630441, now seen corresponding path program 1 times [2020-10-13 14:26:41,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:41,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457878460] [2020-10-13 14:26:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:41,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:41,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:41,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:44,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:44,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:45,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:45,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:46,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:46,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:26:46,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 14:26:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:26:46,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:26:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:26:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:26:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:46,323 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 24 [2020-10-13 14:26:46,532 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:26:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:26:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:46,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:26:46,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:26:46,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:26:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:26:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:26:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:26:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:26:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:26:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:26:46,581 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 14:26:46,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457878460] [2020-10-13 14:26:46,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:26:46,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:26:46,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244425946] [2020-10-13 14:26:46,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:26:46,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:26:46,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:26:46,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:26:46,583 INFO L87 Difference]: Start difference. First operand 10093 states and 15415 transitions. Second operand 10 states. [2020-10-13 14:26:46,799 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 14:26:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:26:57,442 INFO L93 Difference]: Finished difference Result 66400 states and 100085 transitions. [2020-10-13 14:26:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 14:26:57,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-13 14:26:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:26:57,507 INFO L225 Difference]: With dead ends: 66400 [2020-10-13 14:26:57,508 INFO L226 Difference]: Without dead ends: 57638 [2020-10-13 14:26:57,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-10-13 14:26:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57638 states. [2020-10-13 14:26:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57638 to 10032. [2020-10-13 14:26:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10032 states. [2020-10-13 14:26:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 15288 transitions. [2020-10-13 14:26:59,098 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 15288 transitions. Word has length 102 [2020-10-13 14:26:59,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:26:59,098 INFO L479 AbstractCegarLoop]: Abstraction has 10032 states and 15288 transitions. [2020-10-13 14:26:59,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:26:59,098 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 15288 transitions. [2020-10-13 14:26:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:26:59,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:26:59,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:26:59,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:26:59,102 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:26:59,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:26:59,102 INFO L82 PathProgramCache]: Analyzing trace with hash 543101096, now seen corresponding path program 1 times [2020-10-13 14:26:59,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:26:59,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219655418] [2020-10-13 14:26:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:26:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:26:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:59,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:26:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:04,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:04,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:27:04,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:27:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:27:04,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:27:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:27:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 14:27:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:04,338 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:27:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:04,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:04,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:04,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:27:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:27:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:27:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:04,392 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 14:27:04,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219655418] [2020-10-13 14:27:04,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:04,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:27:04,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073577473] [2020-10-13 14:27:04,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:27:04,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:04,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:27:04,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:27:04,399 INFO L87 Difference]: Start difference. First operand 10032 states and 15288 transitions. Second operand 6 states. [2020-10-13 14:27:04,604 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:27:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:06,690 INFO L93 Difference]: Finished difference Result 18484 states and 28154 transitions. [2020-10-13 14:27:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:27:06,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-13 14:27:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:06,705 INFO L225 Difference]: With dead ends: 18484 [2020-10-13 14:27:06,705 INFO L226 Difference]: Without dead ends: 9425 [2020-10-13 14:27:06,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:27:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9425 states. [2020-10-13 14:27:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9425 to 9423. [2020-10-13 14:27:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9423 states. [2020-10-13 14:27:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 14320 transitions. [2020-10-13 14:27:08,127 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 14320 transitions. Word has length 102 [2020-10-13 14:27:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:08,127 INFO L479 AbstractCegarLoop]: Abstraction has 9423 states and 14320 transitions. [2020-10-13 14:27:08,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:27:08,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 14320 transitions. [2020-10-13 14:27:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:27:08,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:08,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:27:08,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:27:08,130 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:08,130 INFO L82 PathProgramCache]: Analyzing trace with hash 589472587, now seen corresponding path program 1 times [2020-10-13 14:27:08,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:08,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041668849] [2020-10-13 14:27:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:13,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:13,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:27:13,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:27:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:27:13,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:27:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:27:13,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:27:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:13,361 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:27:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:13,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:13,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:13,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:27:13,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:27:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:27:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:13,394 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 14:27:13,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041668849] [2020-10-13 14:27:13,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:13,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:27:13,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810698027] [2020-10-13 14:27:13,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:27:13,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:13,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:27:13,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:27:13,396 INFO L87 Difference]: Start difference. First operand 9423 states and 14320 transitions. Second operand 6 states. [2020-10-13 14:27:13,606 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:27:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:15,709 INFO L93 Difference]: Finished difference Result 18115 states and 27570 transitions. [2020-10-13 14:27:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:27:15,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-13 14:27:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:15,719 INFO L225 Difference]: With dead ends: 18115 [2020-10-13 14:27:15,719 INFO L226 Difference]: Without dead ends: 9281 [2020-10-13 14:27:15,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:27:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2020-10-13 14:27:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 9279. [2020-10-13 14:27:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9279 states. [2020-10-13 14:27:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9279 states to 9279 states and 14097 transitions. [2020-10-13 14:27:16,904 INFO L78 Accepts]: Start accepts. Automaton has 9279 states and 14097 transitions. Word has length 102 [2020-10-13 14:27:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:16,905 INFO L479 AbstractCegarLoop]: Abstraction has 9279 states and 14097 transitions. [2020-10-13 14:27:16,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:27:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9279 states and 14097 transitions. [2020-10-13 14:27:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:27:16,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:16,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:27:16,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:27:16,908 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:16,908 INFO L82 PathProgramCache]: Analyzing trace with hash -91581700, now seen corresponding path program 1 times [2020-10-13 14:27:16,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:16,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282965381] [2020-10-13 14:27:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:17,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:17,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:21,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:21,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:21,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:27:21,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:27:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:27:21,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:27:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:27:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 14:27:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:22,140 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:27:22,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:22,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:22,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:22,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:27:22,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:27:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:27:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:22,184 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 14:27:22,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282965381] [2020-10-13 14:27:22,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:22,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:27:22,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781055142] [2020-10-13 14:27:22,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:27:22,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:22,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:27:22,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:27:22,185 INFO L87 Difference]: Start difference. First operand 9279 states and 14097 transitions. Second operand 6 states. [2020-10-13 14:27:22,393 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:27:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:24,713 INFO L93 Difference]: Finished difference Result 17995 states and 27386 transitions. [2020-10-13 14:27:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:27:24,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-13 14:27:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:24,726 INFO L225 Difference]: With dead ends: 17995 [2020-10-13 14:27:24,726 INFO L226 Difference]: Without dead ends: 9192 [2020-10-13 14:27:24,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:27:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9192 states. [2020-10-13 14:27:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9192 to 9190. [2020-10-13 14:27:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9190 states. [2020-10-13 14:27:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 13965 transitions. [2020-10-13 14:27:25,948 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 13965 transitions. Word has length 102 [2020-10-13 14:27:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:25,948 INFO L479 AbstractCegarLoop]: Abstraction has 9190 states and 13965 transitions. [2020-10-13 14:27:25,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:27:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 13965 transitions. [2020-10-13 14:27:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:27:25,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:25,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:27:25,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:27:25,951 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:25,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:25,951 INFO L82 PathProgramCache]: Analyzing trace with hash -517178705, now seen corresponding path program 1 times [2020-10-13 14:27:25,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:25,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130971631] [2020-10-13 14:27:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:27,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:27,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:30,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:30,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 14:27:30,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:27:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:27:30,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:27:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:27:30,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 14:27:30,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:31,303 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:27:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:31,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:31,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:31,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:27:31,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:27:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:27:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:31,338 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 14:27:31,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130971631] [2020-10-13 14:27:31,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:31,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:27:31,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766256177] [2020-10-13 14:27:31,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:27:31,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:31,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:27:31,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:27:31,340 INFO L87 Difference]: Start difference. First operand 9190 states and 13965 transitions. Second operand 11 states. [2020-10-13 14:27:31,669 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-13 14:27:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:37,043 INFO L93 Difference]: Finished difference Result 34829 states and 53049 transitions. [2020-10-13 14:27:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:27:37,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-13 14:27:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:37,071 INFO L225 Difference]: With dead ends: 34829 [2020-10-13 14:27:37,071 INFO L226 Difference]: Without dead ends: 26352 [2020-10-13 14:27:37,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:27:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26352 states. [2020-10-13 14:27:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26352 to 9190. [2020-10-13 14:27:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9190 states. [2020-10-13 14:27:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 13964 transitions. [2020-10-13 14:27:38,439 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 13964 transitions. Word has length 103 [2020-10-13 14:27:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:38,440 INFO L479 AbstractCegarLoop]: Abstraction has 9190 states and 13964 transitions. [2020-10-13 14:27:38,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:27:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 13964 transitions. [2020-10-13 14:27:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:27:38,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:38,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:27:38,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:27:38,443 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:38,443 INFO L82 PathProgramCache]: Analyzing trace with hash -659708050, now seen corresponding path program 1 times [2020-10-13 14:27:38,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:38,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924334567] [2020-10-13 14:27:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:38,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:39,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:43,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:43,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 14:27:43,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:27:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:27:43,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:27:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 14:27:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:43,808 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:27:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:43,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:43,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:43,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:27:43,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:27:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:27:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:43,842 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 14:27:43,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924334567] [2020-10-13 14:27:43,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:43,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:27:43,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102252625] [2020-10-13 14:27:43,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:27:43,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:43,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:27:43,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:27:43,844 INFO L87 Difference]: Start difference. First operand 9190 states and 13964 transitions. Second operand 8 states. [2020-10-13 14:27:44,059 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-13 14:27:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:47,382 INFO L93 Difference]: Finished difference Result 22118 states and 33653 transitions. [2020-10-13 14:27:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 14:27:47,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-13 14:27:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:47,400 INFO L225 Difference]: With dead ends: 22118 [2020-10-13 14:27:47,401 INFO L226 Difference]: Without dead ends: 13384 [2020-10-13 14:27:47,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 14:27:47,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13384 states. [2020-10-13 14:27:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13384 to 9190. [2020-10-13 14:27:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9190 states. [2020-10-13 14:27:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 13963 transitions. [2020-10-13 14:27:48,914 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 13963 transitions. Word has length 103 [2020-10-13 14:27:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:48,914 INFO L479 AbstractCegarLoop]: Abstraction has 9190 states and 13963 transitions. [2020-10-13 14:27:48,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:27:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 13963 transitions. [2020-10-13 14:27:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:27:48,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:48,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:27:48,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:27:48,918 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:48,918 INFO L82 PathProgramCache]: Analyzing trace with hash -599693225, now seen corresponding path program 1 times [2020-10-13 14:27:48,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:48,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407258547] [2020-10-13 14:27:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:50,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:50,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:53,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:27:53,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:27:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:27:53,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:27:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:27:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:27:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:54,289 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:27:54,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:27:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:27:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:27:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:27:54,324 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 14:27:54,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407258547] [2020-10-13 14:27:54,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:27:54,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:27:54,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567496043] [2020-10-13 14:27:54,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:27:54,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:27:54,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:27:54,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:27:54,326 INFO L87 Difference]: Start difference. First operand 9190 states and 13963 transitions. Second operand 9 states. [2020-10-13 14:27:54,538 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 14:27:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:27:57,849 INFO L93 Difference]: Finished difference Result 21931 states and 33372 transitions. [2020-10-13 14:27:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:27:57,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 14:27:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:27:57,865 INFO L225 Difference]: With dead ends: 21931 [2020-10-13 14:27:57,865 INFO L226 Difference]: Without dead ends: 13358 [2020-10-13 14:27:57,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-13 14:27:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13358 states. [2020-10-13 14:27:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13358 to 9164. [2020-10-13 14:27:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9164 states. [2020-10-13 14:27:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 13922 transitions. [2020-10-13 14:27:59,544 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 13922 transitions. Word has length 104 [2020-10-13 14:27:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:27:59,544 INFO L479 AbstractCegarLoop]: Abstraction has 9164 states and 13922 transitions. [2020-10-13 14:27:59,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:27:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 13922 transitions. [2020-10-13 14:27:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:27:59,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:27:59,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:27:59,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:27:59,547 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:27:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:27:59,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1172647840, now seen corresponding path program 1 times [2020-10-13 14:27:59,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:27:59,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370836604] [2020-10-13 14:27:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:27:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:27:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:27:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:00,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:04,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:28:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:28:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:28:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:28:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:28:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:28:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:04,943 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:28:04,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:04,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:04,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:28:04,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:04,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:04,990 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 14:28:04,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370836604] [2020-10-13 14:28:04,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:04,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:28:04,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131464246] [2020-10-13 14:28:04,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:28:04,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:04,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:28:04,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:28:04,992 INFO L87 Difference]: Start difference. First operand 9164 states and 13922 transitions. Second operand 12 states. [2020-10-13 14:28:05,238 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 14:28:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:12,942 INFO L93 Difference]: Finished difference Result 34966 states and 53124 transitions. [2020-10-13 14:28:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 14:28:12,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-13 14:28:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:12,971 INFO L225 Difference]: With dead ends: 34966 [2020-10-13 14:28:12,972 INFO L226 Difference]: Without dead ends: 26419 [2020-10-13 14:28:12,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2020-10-13 14:28:13,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26419 states. [2020-10-13 14:28:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26419 to 9164. [2020-10-13 14:28:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9164 states. [2020-10-13 14:28:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 13921 transitions. [2020-10-13 14:28:14,762 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 13921 transitions. Word has length 104 [2020-10-13 14:28:14,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:28:14,762 INFO L479 AbstractCegarLoop]: Abstraction has 9164 states and 13921 transitions. [2020-10-13 14:28:14,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:28:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 13921 transitions. [2020-10-13 14:28:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:28:14,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:14,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:28:14,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:28:14,765 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash 670596406, now seen corresponding path program 1 times [2020-10-13 14:28:14,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:14,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753822777] [2020-10-13 14:28:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:19,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:19,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:28:19,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:28:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:28:19,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:28:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:28:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 14:28:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:20,022 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 28 [2020-10-13 14:28:20,272 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:28:20,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:20,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:20,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:28:20,301 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 14:28:20,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753822777] [2020-10-13 14:28:20,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:20,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:28:20,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499213355] [2020-10-13 14:28:20,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:28:20,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:20,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:28:20,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:28:20,303 INFO L87 Difference]: Start difference. First operand 9164 states and 13921 transitions. Second operand 12 states. [2020-10-13 14:28:20,629 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 174