/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:28:15,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:28:15,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:28:15,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:28:15,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:28:15,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:28:15,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:28:15,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:28:15,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:28:15,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:28:15,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:28:15,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:28:15,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:28:15,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:28:15,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:28:15,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:28:15,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:28:15,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:28:15,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:28:15,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:28:15,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:28:15,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:28:15,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:28:15,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:28:15,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:28:15,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:28:15,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:28:15,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:28:15,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:28:15,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:28:15,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:28:15,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:28:15,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:28:15,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:28:15,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:28:15,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:28:15,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:28:15,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:28:15,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:28:15,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:28:15,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:28:15,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:28:15,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:28:15,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:28:15,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:28:15,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:28:15,279 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:28:15,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:28:15,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:28:15,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:28:15,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:28:15,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:28:15,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:28:15,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:28:15,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:28:15,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:28:15,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:28:15,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:28:15,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:28:15,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:28:15,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:28:15,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:28:15,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:28:15,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:28:15,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:28:15,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:28:15,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:28:15,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:28:15,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:28:15,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:28:15,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:28:15,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:28:15,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:28:15,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:28:15,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:28:15,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:28:15,636 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:28:15,637 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:28:15,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26fe1e1e8/e3c3a4e18dc44da09cdce52655ada6cd/FLAG4495c613d [2020-10-12 19:28:16,319 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:28:16,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:28:16,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26fe1e1e8/e3c3a4e18dc44da09cdce52655ada6cd/FLAG4495c613d [2020-10-12 19:28:16,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26fe1e1e8/e3c3a4e18dc44da09cdce52655ada6cd [2020-10-12 19:28:16,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:28:16,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:28:16,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:28:16,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:28:16,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:28:16,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:28:16" (1/1) ... [2020-10-12 19:28:16,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:16, skipping insertion in model container [2020-10-12 19:28:16,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:28:16" (1/1) ... [2020-10-12 19:28:16,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:28:16,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:28:16,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:28:17,080 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:28:17,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:28:17,175 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:28:17,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17 WrapperNode [2020-10-12 19:28:17,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:28:17,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:28:17,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:28:17,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:28:17,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... [2020-10-12 19:28:17,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... [2020-10-12 19:28:17,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... [2020-10-12 19:28:17,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... [2020-10-12 19:28:17,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... [2020-10-12 19:28:17,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... [2020-10-12 19:28:17,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... [2020-10-12 19:28:17,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:28:17,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:28:17,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:28:17,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:28:17,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:28:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:28:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:28:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:28:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:28:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:28:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:28:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:28:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:28:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:28:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:28:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:28:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:28:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:28:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:28:17,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:28:17,996 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:28:18,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:28:18 BoogieIcfgContainer [2020-10-12 19:28:18,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:28:18,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:28:18,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:28:18,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:28:18,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:28:16" (1/3) ... [2020-10-12 19:28:18,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e668aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:28:18, skipping insertion in model container [2020-10-12 19:28:18,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:28:17" (2/3) ... [2020-10-12 19:28:18,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e668aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:28:18, skipping insertion in model container [2020-10-12 19:28:18,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:28:18" (3/3) ... [2020-10-12 19:28:18,021 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:28:18,032 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:28:18,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 19:28:18,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 19:28:18,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:28:18,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:28:18,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:28:18,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:28:18,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:28:18,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:28:18,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:28:18,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:28:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-10-12 19:28:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 19:28:18,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:18,116 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] [2020-10-12 19:28:18,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:18,122 INFO L82 PathProgramCache]: Analyzing trace with hash -209225606, now seen corresponding path program 1 times [2020-10-12 19:28:18,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:18,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244315680] [2020-10-12 19:28:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:23,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:23,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 19:28:23,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:28:23,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:28:23,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:28:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:28:23,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 19:28:23,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 19:28:23,596 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 19:28:23,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:23,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:23,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:23,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:28:23,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:23,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244315680] [2020-10-12 19:28:23,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:23,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:28:23,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468973747] [2020-10-12 19:28:23,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:28:23,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:23,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:28:23,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:28:23,657 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 7 states. [2020-10-12 19:28:23,866 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 19:28:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:25,051 INFO L93 Difference]: Finished difference Result 599 states and 958 transitions. [2020-10-12 19:28:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:28:25,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-12 19:28:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:25,074 INFO L225 Difference]: With dead ends: 599 [2020-10-12 19:28:25,075 INFO L226 Difference]: Without dead ends: 494 [2020-10-12 19:28:25,081 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 [2020-10-12 19:28:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-12 19:28:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 237. [2020-10-12 19:28:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-12 19:28:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 341 transitions. [2020-10-12 19:28:25,196 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 341 transitions. Word has length 51 [2020-10-12 19:28:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:25,197 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 341 transitions. [2020-10-12 19:28:25,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:28:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 341 transitions. [2020-10-12 19:28:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 19:28:25,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:25,200 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] [2020-10-12 19:28:25,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:28:25,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:25,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:25,202 INFO L82 PathProgramCache]: Analyzing trace with hash -44161210, now seen corresponding path program 1 times [2020-10-12 19:28:25,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:25,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821728952] [2020-10-12 19:28:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:30,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:30,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 19:28:30,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:28:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:28:30,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:28:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:28:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:28:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:30,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:30,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:30,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:28:30,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:28:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:30,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821728952] [2020-10-12 19:28:30,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:30,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:28:30,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744644182] [2020-10-12 19:28:30,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:28:30,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:30,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:28:30,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:28:30,704 INFO L87 Difference]: Start difference. First operand 237 states and 341 transitions. Second operand 12 states. [2020-10-12 19:28:31,027 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 110 [2020-10-12 19:28:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:34,301 INFO L93 Difference]: Finished difference Result 1117 states and 1654 transitions. [2020-10-12 19:28:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:28:34,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-12 19:28:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:34,313 INFO L225 Difference]: With dead ends: 1117 [2020-10-12 19:28:34,313 INFO L226 Difference]: Without dead ends: 969 [2020-10-12 19:28:34,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=249, Invalid=1011, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:28:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-12 19:28:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 237. [2020-10-12 19:28:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-12 19:28:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 339 transitions. [2020-10-12 19:28:34,382 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 339 transitions. Word has length 52 [2020-10-12 19:28:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:34,383 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 339 transitions. [2020-10-12 19:28:34,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:28:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 339 transitions. [2020-10-12 19:28:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 19:28:34,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:34,388 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] [2020-10-12 19:28:34,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:28:34,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:34,390 INFO L82 PathProgramCache]: Analyzing trace with hash 605940597, now seen corresponding path program 1 times [2020-10-12 19:28:34,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:34,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218874060] [2020-10-12 19:28:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:34,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:38,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 19:28:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:28:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:28:39,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:28:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:28:39,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:28:39,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:28:39,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:39,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:39,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:39,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:39,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:28:39,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:39,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218874060] [2020-10-12 19:28:39,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:39,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:28:39,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295819977] [2020-10-12 19:28:39,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:28:39,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:39,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:28:39,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:28:39,763 INFO L87 Difference]: Start difference. First operand 237 states and 339 transitions. Second operand 12 states. [2020-10-12 19:28:39,914 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-12 19:28:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:42,488 INFO L93 Difference]: Finished difference Result 1276 states and 1908 transitions. [2020-10-12 19:28:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-12 19:28:42,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-12 19:28:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:42,500 INFO L225 Difference]: With dead ends: 1276 [2020-10-12 19:28:42,500 INFO L226 Difference]: Without dead ends: 1178 [2020-10-12 19:28:42,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=500, Invalid=2152, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 19:28:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-10-12 19:28:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 240. [2020-10-12 19:28:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-12 19:28:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 341 transitions. [2020-10-12 19:28:42,594 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 341 transitions. Word has length 52 [2020-10-12 19:28:42,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:42,597 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 341 transitions. [2020-10-12 19:28:42,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:28:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 341 transitions. [2020-10-12 19:28:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:28:42,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:42,610 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] [2020-10-12 19:28:42,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:28:42,616 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:42,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:42,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1158141977, now seen corresponding path program 1 times [2020-10-12 19:28:42,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:42,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640798928] [2020-10-12 19:28:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:46,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:46,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:28:46,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:28:46,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3719 [2020-10-12 19:28:46,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:28:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:28:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 19:28:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:46,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:46,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:28:46,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:46,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:46,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640798928] [2020-10-12 19:28:46,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:46,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:28:46,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601622734] [2020-10-12 19:28:46,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:28:46,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:28:46,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:28:46,577 INFO L87 Difference]: Start difference. First operand 240 states and 341 transitions. Second operand 7 states. [2020-10-12 19:28:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:47,980 INFO L93 Difference]: Finished difference Result 1137 states and 1717 transitions. [2020-10-12 19:28:47,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:28:47,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-12 19:28:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:47,986 INFO L225 Difference]: With dead ends: 1137 [2020-10-12 19:28:47,986 INFO L226 Difference]: Without dead ends: 968 [2020-10-12 19:28:47,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:28:47,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-12 19:28:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 402. [2020-10-12 19:28:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-12 19:28:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 584 transitions. [2020-10-12 19:28:48,034 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 584 transitions. Word has length 53 [2020-10-12 19:28:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:48,034 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 584 transitions. [2020-10-12 19:28:48,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:28:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 584 transitions. [2020-10-12 19:28:48,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:28:48,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:48,036 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] [2020-10-12 19:28:48,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:28:48,036 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:48,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:48,037 INFO L82 PathProgramCache]: Analyzing trace with hash -28576414, now seen corresponding path program 1 times [2020-10-12 19:28:48,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:48,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292920655] [2020-10-12 19:28:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:48,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:49,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:49,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:28:49,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:28:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1354 [2020-10-12 19:28:49,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:28:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:28:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 19:28:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:49,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:49,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:49,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:49,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:28:49,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:49,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:49,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:49,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292920655] [2020-10-12 19:28:49,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:49,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:28:49,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872194136] [2020-10-12 19:28:49,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:28:49,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:49,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:28:49,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:28:49,566 INFO L87 Difference]: Start difference. First operand 402 states and 584 transitions. Second operand 7 states. [2020-10-12 19:28:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:50,528 INFO L93 Difference]: Finished difference Result 1451 states and 2191 transitions. [2020-10-12 19:28:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:28:50,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-12 19:28:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:50,536 INFO L225 Difference]: With dead ends: 1451 [2020-10-12 19:28:50,537 INFO L226 Difference]: Without dead ends: 1248 [2020-10-12 19:28:50,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:28:50,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-10-12 19:28:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 512. [2020-10-12 19:28:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-12 19:28:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 751 transitions. [2020-10-12 19:28:50,613 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 751 transitions. Word has length 53 [2020-10-12 19:28:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:50,614 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 751 transitions. [2020-10-12 19:28:50,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:28:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 751 transitions. [2020-10-12 19:28:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:28:50,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:50,616 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] [2020-10-12 19:28:50,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:28:50,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:50,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:50,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1075980755, now seen corresponding path program 1 times [2020-10-12 19:28:50,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:50,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494604284] [2020-10-12 19:28:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:50,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:54,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:54,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:28:54,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:28:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3852 [2020-10-12 19:28:54,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:28:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:28:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 19:28:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:28:55,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:55,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494604284] [2020-10-12 19:28:55,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:55,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:28:55,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389145196] [2020-10-12 19:28:55,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:28:55,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:55,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:28:55,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:28:55,100 INFO L87 Difference]: Start difference. First operand 512 states and 751 transitions. Second operand 11 states. [2020-10-12 19:28:55,303 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-12 19:28:55,706 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 149 [2020-10-12 19:28:55,989 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-12 19:28:56,129 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-12 19:28:56,252 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-10-12 19:28:56,432 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-12 19:28:56,646 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-12 19:28:56,849 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 19:28:57,069 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 19:28:57,198 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-12 19:28:57,987 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-12 19:29:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:00,485 INFO L93 Difference]: Finished difference Result 2189 states and 3315 transitions. [2020-10-12 19:29:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:29:00,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-12 19:29:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:00,495 INFO L225 Difference]: With dead ends: 2189 [2020-10-12 19:29:00,496 INFO L226 Difference]: Without dead ends: 1906 [2020-10-12 19:29:00,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:29:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-10-12 19:29:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 512. [2020-10-12 19:29:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-12 19:29:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 750 transitions. [2020-10-12 19:29:00,591 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 750 transitions. Word has length 54 [2020-10-12 19:29:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:00,591 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 750 transitions. [2020-10-12 19:29:00,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:29:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 750 transitions. [2020-10-12 19:29:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:29:00,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:00,593 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] [2020-10-12 19:29:00,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:29:00,593 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:00,594 INFO L82 PathProgramCache]: Analyzing trace with hash -315481810, now seen corresponding path program 1 times [2020-10-12 19:29:00,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:00,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772823324] [2020-10-12 19:29:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:04,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:04,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:29:04,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:29:04,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3763 [2020-10-12 19:29:04,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:29:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:29:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:29:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:04,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772823324] [2020-10-12 19:29:04,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:04,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:29:04,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491710437] [2020-10-12 19:29:04,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:29:04,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:04,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:29:04,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:29:04,715 INFO L87 Difference]: Start difference. First operand 512 states and 750 transitions. Second operand 12 states. [2020-10-12 19:29:04,891 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-12 19:29:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:07,658 INFO L93 Difference]: Finished difference Result 1785 states and 2649 transitions. [2020-10-12 19:29:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:29:07,658 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-12 19:29:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:07,665 INFO L225 Difference]: With dead ends: 1785 [2020-10-12 19:29:07,666 INFO L226 Difference]: Without dead ends: 1519 [2020-10-12 19:29:07,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 19:29:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-12 19:29:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 512. [2020-10-12 19:29:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-12 19:29:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 748 transitions. [2020-10-12 19:29:07,768 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 748 transitions. Word has length 54 [2020-10-12 19:29:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:07,769 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 748 transitions. [2020-10-12 19:29:07,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:29:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 748 transitions. [2020-10-12 19:29:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:29:07,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:07,770 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] [2020-10-12 19:29:07,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:29:07,770 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:07,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1209838092, now seen corresponding path program 1 times [2020-10-12 19:29:07,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:07,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519504598] [2020-10-12 19:29:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:09,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:11,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:29:11,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:29:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3251 [2020-10-12 19:29:11,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:29:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:29:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:29:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:11,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:29:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:11,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519504598] [2020-10-12 19:29:11,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:11,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:29:11,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137399065] [2020-10-12 19:29:11,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:29:11,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:11,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:29:11,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:29:11,424 INFO L87 Difference]: Start difference. First operand 512 states and 748 transitions. Second operand 14 states. [2020-10-12 19:29:11,732 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2020-10-12 19:29:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:14,711 INFO L93 Difference]: Finished difference Result 1982 states and 2974 transitions. [2020-10-12 19:29:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 19:29:14,712 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-12 19:29:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:14,722 INFO L225 Difference]: With dead ends: 1982 [2020-10-12 19:29:14,722 INFO L226 Difference]: Without dead ends: 1793 [2020-10-12 19:29:14,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:29:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2020-10-12 19:29:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 537. [2020-10-12 19:29:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-12 19:29:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 777 transitions. [2020-10-12 19:29:14,883 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 777 transitions. Word has length 54 [2020-10-12 19:29:14,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:14,884 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 777 transitions. [2020-10-12 19:29:14,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:29:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 777 transitions. [2020-10-12 19:29:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:29:14,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:14,886 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] [2020-10-12 19:29:14,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:29:14,886 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1597170256, now seen corresponding path program 1 times [2020-10-12 19:29:14,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:14,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535990610] [2020-10-12 19:29:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:15,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:15,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:29:15,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:29:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-12 19:29:15,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:29:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:29:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:29:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:15,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:15,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:29:15,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:15,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535990610] [2020-10-12 19:29:15,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:15,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:29:15,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254807190] [2020-10-12 19:29:15,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:29:15,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:29:15,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:29:15,635 INFO L87 Difference]: Start difference. First operand 537 states and 777 transitions. Second operand 6 states. [2020-10-12 19:29:15,779 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-12 19:29:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:16,966 INFO L93 Difference]: Finished difference Result 2298 states and 3506 transitions. [2020-10-12 19:29:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:29:16,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-12 19:29:16,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:16,975 INFO L225 Difference]: With dead ends: 2298 [2020-10-12 19:29:16,975 INFO L226 Difference]: Without dead ends: 1978 [2020-10-12 19:29:16,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:29:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2020-10-12 19:29:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 910. [2020-10-12 19:29:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-10-12 19:29:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1334 transitions. [2020-10-12 19:29:17,150 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1334 transitions. Word has length 55 [2020-10-12 19:29:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:17,151 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1334 transitions. [2020-10-12 19:29:17,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:29:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1334 transitions. [2020-10-12 19:29:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:29:17,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:17,152 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] [2020-10-12 19:29:17,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:29:17,153 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2087644740, now seen corresponding path program 1 times [2020-10-12 19:29:17,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:17,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89677745] [2020-10-12 19:29:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:19,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:19,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:29:19,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:29:19,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-10-12 19:29:19,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:29:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:29:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:20,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:20,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:20,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:20,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:29:20,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:20,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89677745] [2020-10-12 19:29:20,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:20,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:29:20,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106249438] [2020-10-12 19:29:20,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:29:20,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:20,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:29:20,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:29:20,268 INFO L87 Difference]: Start difference. First operand 910 states and 1334 transitions. Second operand 9 states. [2020-10-12 19:29:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:21,747 INFO L93 Difference]: Finished difference Result 2782 states and 4186 transitions. [2020-10-12 19:29:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:29:21,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-12 19:29:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:21,756 INFO L225 Difference]: With dead ends: 2782 [2020-10-12 19:29:21,756 INFO L226 Difference]: Without dead ends: 2235 [2020-10-12 19:29:21,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:29:21,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-10-12 19:29:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 722. [2020-10-12 19:29:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-10-12 19:29:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1044 transitions. [2020-10-12 19:29:21,917 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1044 transitions. Word has length 56 [2020-10-12 19:29:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:21,918 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 1044 transitions. [2020-10-12 19:29:21,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:29:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1044 transitions. [2020-10-12 19:29:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:29:21,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:21,919 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] [2020-10-12 19:29:21,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:29:21,919 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:21,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1856338505, now seen corresponding path program 1 times [2020-10-12 19:29:21,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:21,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654022328] [2020-10-12 19:29:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:22,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:22,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:29:22,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 19:29:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-12 19:29:22,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:29:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:29:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:22,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:22,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:22,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:29:22,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:22,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654022328] [2020-10-12 19:29:22,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:22,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:29:22,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855700469] [2020-10-12 19:29:22,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:29:22,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:22,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:29:22,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:29:22,460 INFO L87 Difference]: Start difference. First operand 722 states and 1044 transitions. Second operand 6 states. [2020-10-12 19:29:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:23,258 INFO L93 Difference]: Finished difference Result 1070 states and 1570 transitions. [2020-10-12 19:29:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:29:23,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-12 19:29:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:23,263 INFO L225 Difference]: With dead ends: 1070 [2020-10-12 19:29:23,264 INFO L226 Difference]: Without dead ends: 699 [2020-10-12 19:29:23,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:29:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-10-12 19:29:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 694. [2020-10-12 19:29:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-12 19:29:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1008 transitions. [2020-10-12 19:29:23,409 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1008 transitions. Word has length 56 [2020-10-12 19:29:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:23,409 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1008 transitions. [2020-10-12 19:29:23,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:29:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1008 transitions. [2020-10-12 19:29:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:29:23,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:23,410 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] [2020-10-12 19:29:23,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:29:23,411 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:23,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1488246743, now seen corresponding path program 1 times [2020-10-12 19:29:23,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:23,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118405487] [2020-10-12 19:29:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:23,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:24,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:24,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:28,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:29:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:29:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:29:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:29:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:29:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:28,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:28,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:28,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:28,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:28,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:29:28,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:28,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:28,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118405487] [2020-10-12 19:29:28,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:28,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:29:28,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918303263] [2020-10-12 19:29:28,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:29:28,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:28,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:29:28,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:29:28,908 INFO L87 Difference]: Start difference. First operand 694 states and 1008 transitions. Second operand 15 states. [2020-10-12 19:29:29,292 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-12 19:29:29,580 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-12 19:29:30,089 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-12 19:29:30,301 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-12 19:29:30,438 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-12 19:29:30,596 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-10-12 19:29:30,868 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-12 19:29:31,266 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-12 19:29:31,705 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-12 19:29:31,837 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-12 19:29:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:37,810 INFO L93 Difference]: Finished difference Result 7409 states and 11037 transitions. [2020-10-12 19:29:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-12 19:29:37,811 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-12 19:29:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:37,835 INFO L225 Difference]: With dead ends: 7409 [2020-10-12 19:29:37,835 INFO L226 Difference]: Without dead ends: 6902 [2020-10-12 19:29:37,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=835, Invalid=3325, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 19:29:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6902 states. [2020-10-12 19:29:38,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6902 to 699. [2020-10-12 19:29:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-10-12 19:29:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1010 transitions. [2020-10-12 19:29:38,088 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1010 transitions. Word has length 56 [2020-10-12 19:29:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:38,089 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 1010 transitions. [2020-10-12 19:29:38,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:29:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1010 transitions. [2020-10-12 19:29:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:29:38,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:38,090 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] [2020-10-12 19:29:38,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:29:38,091 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash 509084422, now seen corresponding path program 1 times [2020-10-12 19:29:38,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:38,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318142287] [2020-10-12 19:29:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:38,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:29:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 19:29:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 19:29:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:29:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 19:29:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:38,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:38,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:38,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:38,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:29:38,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:38,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:38,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:38,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318142287] [2020-10-12 19:29:38,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:38,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:29:38,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744140134] [2020-10-12 19:29:38,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:29:38,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:38,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:29:38,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:29:38,568 INFO L87 Difference]: Start difference. First operand 699 states and 1010 transitions. Second operand 6 states. [2020-10-12 19:29:39,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:39,178 INFO L93 Difference]: Finished difference Result 1030 states and 1518 transitions. [2020-10-12 19:29:39,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:29:39,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-12 19:29:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:39,181 INFO L225 Difference]: With dead ends: 1030 [2020-10-12 19:29:39,181 INFO L226 Difference]: Without dead ends: 449 [2020-10-12 19:29:39,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:29:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-12 19:29:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 285. [2020-10-12 19:29:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-12 19:29:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 391 transitions. [2020-10-12 19:29:39,262 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 391 transitions. Word has length 56 [2020-10-12 19:29:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:39,262 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 391 transitions. [2020-10-12 19:29:39,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:29:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 391 transitions. [2020-10-12 19:29:39,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:29:39,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:39,263 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] [2020-10-12 19:29:39,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:29:39,263 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash 138741596, now seen corresponding path program 1 times [2020-10-12 19:29:39,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:39,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055340293] [2020-10-12 19:29:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:44,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:44,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:29:44,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:29:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:29:44,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:29:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:29:44,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:44,872 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-12 19:29:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:45,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:45,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055340293] [2020-10-12 19:29:45,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:45,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 19:29:45,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57468464] [2020-10-12 19:29:45,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:29:45,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:45,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:29:45,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:29:45,302 INFO L87 Difference]: Start difference. First operand 285 states and 391 transitions. Second operand 19 states. [2020-10-12 19:29:45,539 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-12 19:29:45,982 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-12 19:29:46,276 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-12 19:29:46,562 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-10-12 19:29:46,943 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-10-12 19:29:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:50,907 INFO L93 Difference]: Finished difference Result 1679 states and 2463 transitions. [2020-10-12 19:29:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:29:50,908 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-10-12 19:29:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:50,913 INFO L225 Difference]: With dead ends: 1679 [2020-10-12 19:29:50,913 INFO L226 Difference]: Without dead ends: 1506 [2020-10-12 19:29:50,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 19:29:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-10-12 19:29:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 292. [2020-10-12 19:29:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-12 19:29:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 400 transitions. [2020-10-12 19:29:51,060 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 400 transitions. Word has length 56 [2020-10-12 19:29:51,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:51,061 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 400 transitions. [2020-10-12 19:29:51,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:29:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 400 transitions. [2020-10-12 19:29:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:29:51,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:51,062 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] [2020-10-12 19:29:51,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:29:51,062 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2136072761, now seen corresponding path program 1 times [2020-10-12 19:29:51,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:51,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146744582] [2020-10-12 19:29:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:51,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:56,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:29:56,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:29:56,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:29:56,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:29:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:29:56,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:56,344 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 22 [2020-10-12 19:29:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:56,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:29:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:56,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146744582] [2020-10-12 19:29:56,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:56,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:29:56,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115970185] [2020-10-12 19:29:56,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:29:56,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:56,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:29:56,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:29:56,707 INFO L87 Difference]: Start difference. First operand 292 states and 400 transitions. Second operand 14 states. [2020-10-12 19:29:56,895 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-12 19:29:57,406 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-12 19:30:00,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:00,895 INFO L93 Difference]: Finished difference Result 2356 states and 3483 transitions. [2020-10-12 19:30:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:30:00,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-12 19:30:00,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:00,906 INFO L225 Difference]: With dead ends: 2356 [2020-10-12 19:30:00,907 INFO L226 Difference]: Without dead ends: 2178 [2020-10-12 19:30:00,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:30:00,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2020-10-12 19:30:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 288. [2020-10-12 19:30:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-12 19:30:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 394 transitions. [2020-10-12 19:30:01,008 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 394 transitions. Word has length 56 [2020-10-12 19:30:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:01,008 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 394 transitions. [2020-10-12 19:30:01,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:30:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 394 transitions. [2020-10-12 19:30:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:30:01,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:01,009 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] [2020-10-12 19:30:01,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:30:01,009 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 615719313, now seen corresponding path program 1 times [2020-10-12 19:30:01,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:01,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248602959] [2020-10-12 19:30:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:02,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1763 [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:30:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:03,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:30:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:03,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248602959] [2020-10-12 19:30:03,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:03,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:30:03,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123449070] [2020-10-12 19:30:03,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:30:03,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:03,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:30:03,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:30:03,135 INFO L87 Difference]: Start difference. First operand 288 states and 394 transitions. Second operand 10 states. [2020-10-12 19:30:03,277 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-12 19:30:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:04,188 INFO L93 Difference]: Finished difference Result 552 states and 789 transitions. [2020-10-12 19:30:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:30:04,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-12 19:30:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:04,191 INFO L225 Difference]: With dead ends: 552 [2020-10-12 19:30:04,192 INFO L226 Difference]: Without dead ends: 373 [2020-10-12 19:30:04,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-12 19:30:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 283. [2020-10-12 19:30:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-12 19:30:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 385 transitions. [2020-10-12 19:30:04,294 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 385 transitions. Word has length 56 [2020-10-12 19:30:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:04,294 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 385 transitions. [2020-10-12 19:30:04,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:30:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 385 transitions. [2020-10-12 19:30:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:30:04,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:04,295 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] [2020-10-12 19:30:04,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:30:04,296 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:04,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1681916818, now seen corresponding path program 1 times [2020-10-12 19:30:04,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:04,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905807043] [2020-10-12 19:30:04,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:04,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:04,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:30:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 19:30:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-12 19:30:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:30:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 19:30:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:04,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:04,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:30:04,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:04,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905807043] [2020-10-12 19:30:04,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:04,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:30:04,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022541399] [2020-10-12 19:30:04,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:30:04,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:04,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:30:04,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:30:04,688 INFO L87 Difference]: Start difference. First operand 283 states and 385 transitions. Second operand 6 states. [2020-10-12 19:30:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:05,442 INFO L93 Difference]: Finished difference Result 680 states and 968 transitions. [2020-10-12 19:30:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:30:05,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-12 19:30:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:05,445 INFO L225 Difference]: With dead ends: 680 [2020-10-12 19:30:05,445 INFO L226 Difference]: Without dead ends: 443 [2020-10-12 19:30:05,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:30:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-12 19:30:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2020-10-12 19:30:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-12 19:30:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 623 transitions. [2020-10-12 19:30:05,643 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 623 transitions. Word has length 56 [2020-10-12 19:30:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:05,644 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 623 transitions. [2020-10-12 19:30:05,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:30:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 623 transitions. [2020-10-12 19:30:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:30:05,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:05,644 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] [2020-10-12 19:30:05,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:30:05,644 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:05,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:05,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1895650014, now seen corresponding path program 1 times [2020-10-12 19:30:05,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:05,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865330374] [2020-10-12 19:30:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:07,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:30:07,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:30:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-12 19:30:07,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:30:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 19:30:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:07,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:07,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:07,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:30:07,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:07,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865330374] [2020-10-12 19:30:07,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:07,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:30:07,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681758706] [2020-10-12 19:30:07,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:30:07,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:07,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:30:07,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:30:07,444 INFO L87 Difference]: Start difference. First operand 438 states and 623 transitions. Second operand 12 states. [2020-10-12 19:30:07,616 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-12 19:30:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:10,113 INFO L93 Difference]: Finished difference Result 1622 states and 2366 transitions. [2020-10-12 19:30:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:30:10,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-12 19:30:10,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:10,116 INFO L225 Difference]: With dead ends: 1622 [2020-10-12 19:30:10,116 INFO L226 Difference]: Without dead ends: 1286 [2020-10-12 19:30:10,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 19:30:10,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-10-12 19:30:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 441. [2020-10-12 19:30:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-12 19:30:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 626 transitions. [2020-10-12 19:30:10,285 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 626 transitions. Word has length 57 [2020-10-12 19:30:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:10,285 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 626 transitions. [2020-10-12 19:30:10,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:30:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 626 transitions. [2020-10-12 19:30:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:30:10,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:10,286 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] [2020-10-12 19:30:10,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:30:10,286 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:10,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:10,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1543929112, now seen corresponding path program 1 times [2020-10-12 19:30:10,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:10,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355748334] [2020-10-12 19:30:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:10,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:11,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:30:11,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:30:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-12 19:30:11,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:30:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 19:30:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 19:30:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:12,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:12,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:30:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:12,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355748334] [2020-10-12 19:30:12,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:12,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:30:12,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497348929] [2020-10-12 19:30:12,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:30:12,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:12,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:30:12,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:30:12,073 INFO L87 Difference]: Start difference. First operand 441 states and 626 transitions. Second operand 12 states. [2020-10-12 19:30:12,408 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 114 [2020-10-12 19:30:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:14,467 INFO L93 Difference]: Finished difference Result 1958 states and 2894 transitions. [2020-10-12 19:30:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:30:14,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-12 19:30:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:14,471 INFO L225 Difference]: With dead ends: 1958 [2020-10-12 19:30:14,471 INFO L226 Difference]: Without dead ends: 1619 [2020-10-12 19:30:14,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:30:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2020-10-12 19:30:14,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 441. [2020-10-12 19:30:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-12 19:30:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 623 transitions. [2020-10-12 19:30:14,653 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 623 transitions. Word has length 57 [2020-10-12 19:30:14,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:14,653 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 623 transitions. [2020-10-12 19:30:14,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:30:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 623 transitions. [2020-10-12 19:30:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:30:14,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:14,654 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] [2020-10-12 19:30:14,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 19:30:14,654 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:14,654 INFO L82 PathProgramCache]: Analyzing trace with hash -268327962, now seen corresponding path program 1 times [2020-10-12 19:30:14,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:14,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823867413] [2020-10-12 19:30:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:14,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:14,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:16,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1710 [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:30:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:30:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:16,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823867413] [2020-10-12 19:30:16,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:16,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:30:16,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792970487] [2020-10-12 19:30:16,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:30:16,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:16,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:30:16,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:30:16,832 INFO L87 Difference]: Start difference. First operand 441 states and 623 transitions. Second operand 15 states. [2020-10-12 19:30:17,268 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2020-10-12 19:30:20,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:20,144 INFO L93 Difference]: Finished difference Result 1463 states and 2147 transitions. [2020-10-12 19:30:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:30:20,145 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-10-12 19:30:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:20,147 INFO L225 Difference]: With dead ends: 1463 [2020-10-12 19:30:20,147 INFO L226 Difference]: Without dead ends: 1127 [2020-10-12 19:30:20,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=325, Invalid=1235, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:30:20,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-12 19:30:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 438. [2020-10-12 19:30:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-12 19:30:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 619 transitions. [2020-10-12 19:30:20,366 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 619 transitions. Word has length 58 [2020-10-12 19:30:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:20,367 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 619 transitions. [2020-10-12 19:30:20,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:30:20,367 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 619 transitions. [2020-10-12 19:30:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:30:20,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:20,368 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] [2020-10-12 19:30:20,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 19:30:20,368 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:20,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:20,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1114574671, now seen corresponding path program 1 times [2020-10-12 19:30:20,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:20,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599153126] [2020-10-12 19:30:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:20,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:20,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:21,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:30:21,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:30:21,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-12 19:30:21,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:21,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 19:30:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:30:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:30:21,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:22,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:22,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:30:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:22,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599153126] [2020-10-12 19:30:22,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:22,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-12 19:30:22,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581387263] [2020-10-12 19:30:22,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 19:30:22,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:22,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 19:30:22,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:30:22,169 INFO L87 Difference]: Start difference. First operand 438 states and 619 transitions. Second operand 20 states. [2020-10-12 19:30:22,447 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 19:30:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:25,648 INFO L93 Difference]: Finished difference Result 1809 states and 2661 transitions. [2020-10-12 19:30:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:30:25,649 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-12 19:30:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:25,652 INFO L225 Difference]: With dead ends: 1809 [2020-10-12 19:30:25,652 INFO L226 Difference]: Without dead ends: 1472 [2020-10-12 19:30:25,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:30:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-12 19:30:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 451. [2020-10-12 19:30:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-10-12 19:30:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 634 transitions. [2020-10-12 19:30:25,846 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 634 transitions. Word has length 58 [2020-10-12 19:30:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:25,846 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 634 transitions. [2020-10-12 19:30:25,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 19:30:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 634 transitions. [2020-10-12 19:30:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 19:30:25,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:25,847 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] [2020-10-12 19:30:25,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 19:30:25,848 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 433454496, now seen corresponding path program 1 times [2020-10-12 19:30:25,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:25,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640238916] [2020-10-12 19:30:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:25,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:25,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:27,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:27,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 19:30:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:30:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-12 19:30:27,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:30:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:30:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:27,462 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2020-10-12 19:30:27,695 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 19:30:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:27,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:27,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:27,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:27,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:30:27,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:30:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:27,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640238916] [2020-10-12 19:30:27,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:27,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:30:27,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288165633] [2020-10-12 19:30:27,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:30:27,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:27,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:30:27,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:30:27,758 INFO L87 Difference]: Start difference. First operand 451 states and 634 transitions. Second operand 15 states. [2020-10-12 19:30:28,040 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-12 19:30:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:30,793 INFO L93 Difference]: Finished difference Result 1935 states and 2867 transitions. [2020-10-12 19:30:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:30:30,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-10-12 19:30:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:30,798 INFO L225 Difference]: With dead ends: 1935 [2020-10-12 19:30:30,798 INFO L226 Difference]: Without dead ends: 1576 [2020-10-12 19:30:30,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:30:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-10-12 19:30:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 417. [2020-10-12 19:30:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-12 19:30:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 594 transitions. [2020-10-12 19:30:31,115 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 594 transitions. Word has length 58 [2020-10-12 19:30:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:31,115 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 594 transitions. [2020-10-12 19:30:31,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:30:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 594 transitions. [2020-10-12 19:30:31,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 19:30:31,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:31,116 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] [2020-10-12 19:30:31,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 19:30:31,117 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:31,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:31,117 INFO L82 PathProgramCache]: Analyzing trace with hash 21950731, now seen corresponding path program 1 times [2020-10-12 19:30:31,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:31,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065982177] [2020-10-12 19:30:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:30:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:30:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:31,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:31,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:31,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:31,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:30:31,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:31,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:31,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065982177] [2020-10-12 19:30:31,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:31,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:30:31,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295026568] [2020-10-12 19:30:31,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:30:31,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:30:31,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:30:31,437 INFO L87 Difference]: Start difference. First operand 417 states and 594 transitions. Second operand 6 states. [2020-10-12 19:30:31,591 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-12 19:30:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:32,779 INFO L93 Difference]: Finished difference Result 1396 states and 2071 transitions. [2020-10-12 19:30:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:30:32,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-12 19:30:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:32,783 INFO L225 Difference]: With dead ends: 1396 [2020-10-12 19:30:32,783 INFO L226 Difference]: Without dead ends: 1071 [2020-10-12 19:30:32,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:30:32,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-10-12 19:30:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 419. [2020-10-12 19:30:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-12 19:30:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 591 transitions. [2020-10-12 19:30:33,124 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 591 transitions. Word has length 59 [2020-10-12 19:30:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:33,124 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 591 transitions. [2020-10-12 19:30:33,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:30:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 591 transitions. [2020-10-12 19:30:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 19:30:33,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:33,125 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] [2020-10-12 19:30:33,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 19:30:33,126 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:33,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1882737005, now seen corresponding path program 1 times [2020-10-12 19:30:33,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:33,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861940936] [2020-10-12 19:30:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:33,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:33,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 19:30:33,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 19:30:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-12 19:30:33,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:30:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:30:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:33,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:33,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:33,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:30:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:33,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861940936] [2020-10-12 19:30:33,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:33,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:30:33,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602636753] [2020-10-12 19:30:33,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:30:33,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:33,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:30:34,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:30:34,000 INFO L87 Difference]: Start difference. First operand 419 states and 591 transitions. Second operand 10 states. [2020-10-12 19:30:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:34,958 INFO L93 Difference]: Finished difference Result 743 states and 1078 transitions. [2020-10-12 19:30:34,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 19:30:34,958 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-12 19:30:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:34,959 INFO L225 Difference]: With dead ends: 743 [2020-10-12 19:30:34,959 INFO L226 Difference]: Without dead ends: 403 [2020-10-12 19:30:34,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-12 19:30:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 402. [2020-10-12 19:30:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-10-12 19:30:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 570 transitions. [2020-10-12 19:30:35,143 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 570 transitions. Word has length 59 [2020-10-12 19:30:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:35,143 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 570 transitions. [2020-10-12 19:30:35,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:30:35,143 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 570 transitions. [2020-10-12 19:30:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:30:35,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:35,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:35,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 19:30:35,144 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:35,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1338614931, now seen corresponding path program 1 times [2020-10-12 19:30:35,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:35,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88536430] [2020-10-12 19:30:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:37,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:40,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:40,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:30:40,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:30:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:30:40,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:40,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:30:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:30:40,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:40,454 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2020-10-12 19:30:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:40,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:40,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88536430] [2020-10-12 19:30:40,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:40,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 19:30:40,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690585530] [2020-10-12 19:30:40,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:30:40,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:40,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:30:40,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:40,779 INFO L87 Difference]: Start difference. First operand 402 states and 570 transitions. Second operand 17 states. [2020-10-12 19:30:40,922 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-12 19:30:41,405 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-12 19:30:41,830 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-12 19:30:52,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:52,949 INFO L93 Difference]: Finished difference Result 5810 states and 8576 transitions. [2020-10-12 19:30:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-12 19:30:52,949 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-12 19:30:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:52,957 INFO L225 Difference]: With dead ends: 5810 [2020-10-12 19:30:52,957 INFO L226 Difference]: Without dead ends: 5488 [2020-10-12 19:30:52,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=674, Invalid=4156, Unknown=0, NotChecked=0, Total=4830 [2020-10-12 19:30:52,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2020-10-12 19:30:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 1820. [2020-10-12 19:30:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-10-12 19:30:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2690 transitions. [2020-10-12 19:30:54,040 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2690 transitions. Word has length 80 [2020-10-12 19:30:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:54,040 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 2690 transitions. [2020-10-12 19:30:54,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:30:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2690 transitions. [2020-10-12 19:30:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:30:54,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:54,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:54,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 19:30:54,042 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:54,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1100429767, now seen corresponding path program 1 times [2020-10-12 19:30:54,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:54,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007122850] [2020-10-12 19:30:54,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:55,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:55,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:55,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:59,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:59,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:30:59,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:30:59,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:30:59,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:30:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:30:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:59,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:59,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:30:59,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:59,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007122850] [2020-10-12 19:30:59,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:59,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:30:59,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124952889] [2020-10-12 19:30:59,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:30:59,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:59,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:30:59,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:30:59,404 INFO L87 Difference]: Start difference. First operand 1820 states and 2690 transitions. Second operand 13 states. [2020-10-12 19:30:59,626 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-12 19:31:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:02,742 INFO L93 Difference]: Finished difference Result 4024 states and 5979 transitions. [2020-10-12 19:31:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:31:02,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2020-10-12 19:31:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:02,746 INFO L225 Difference]: With dead ends: 4024 [2020-10-12 19:31:02,746 INFO L226 Difference]: Without dead ends: 2296 [2020-10-12 19:31:02,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:31:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-10-12 19:31:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1152. [2020-10-12 19:31:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2020-10-12 19:31:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1681 transitions. [2020-10-12 19:31:03,463 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1681 transitions. Word has length 80 [2020-10-12 19:31:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:03,464 INFO L479 AbstractCegarLoop]: Abstraction has 1152 states and 1681 transitions. [2020-10-12 19:31:03,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:31:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1681 transitions. [2020-10-12 19:31:03,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:31:03,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:03,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:31:03,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 19:31:03,467 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1048107880, now seen corresponding path program 1 times [2020-10-12 19:31:03,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:03,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462389320] [2020-10-12 19:31:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:07,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:31:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:31:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-10-12 19:31:07,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:31:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 19:31:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:31:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:07,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:07,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:07,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:07,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:07,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:31:07,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:07,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:07,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462389320] [2020-10-12 19:31:07,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:07,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:31:07,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527111558] [2020-10-12 19:31:07,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:31:07,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:07,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:31:07,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:31:07,902 INFO L87 Difference]: Start difference. First operand 1152 states and 1681 transitions. Second operand 15 states. [2020-10-12 19:31:08,105 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-12 19:31:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:11,921 INFO L93 Difference]: Finished difference Result 3631 states and 5334 transitions. [2020-10-12 19:31:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:31:11,922 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-10-12 19:31:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:11,925 INFO L225 Difference]: With dead ends: 3631 [2020-10-12 19:31:11,925 INFO L226 Difference]: Without dead ends: 3021 [2020-10-12 19:31:11,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:31:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2020-10-12 19:31:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 1484. [2020-10-12 19:31:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1484 states. [2020-10-12 19:31:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 2177 transitions. [2020-10-12 19:31:12,808 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 2177 transitions. Word has length 80 [2020-10-12 19:31:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:12,808 INFO L479 AbstractCegarLoop]: Abstraction has 1484 states and 2177 transitions. [2020-10-12 19:31:12,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:31:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 2177 transitions. [2020-10-12 19:31:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:31:12,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:12,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:31:12,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 19:31:12,811 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:12,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1286293044, now seen corresponding path program 1 times [2020-10-12 19:31:12,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:12,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090820045] [2020-10-12 19:31:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:12,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:13,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:13,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:31:13,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:31:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-12 19:31:13,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:13,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:31:13,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 19:31:13,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 19:31:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:13,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:13,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:13,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:13,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090820045] [2020-10-12 19:31:13,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:13,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:31:13,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177850530] [2020-10-12 19:31:13,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:31:13,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:13,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:31:13,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:31:13,596 INFO L87 Difference]: Start difference. First operand 1484 states and 2177 transitions. Second operand 6 states. [2020-10-12 19:31:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:16,481 INFO L93 Difference]: Finished difference Result 3685 states and 5375 transitions. [2020-10-12 19:31:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:31:16,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-12 19:31:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:16,488 INFO L225 Difference]: With dead ends: 3685 [2020-10-12 19:31:16,488 INFO L226 Difference]: Without dead ends: 3683 [2020-10-12 19:31:16,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:31:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2020-10-12 19:31:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 1586. [2020-10-12 19:31:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-10-12 19:31:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2279 transitions. [2020-10-12 19:31:17,430 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2279 transitions. Word has length 80 [2020-10-12 19:31:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:17,430 INFO L479 AbstractCegarLoop]: Abstraction has 1586 states and 2279 transitions. [2020-10-12 19:31:17,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:31:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2279 transitions. [2020-10-12 19:31:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:31:17,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:17,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:31:17,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 19:31:17,433 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1781791458, now seen corresponding path program 1 times [2020-10-12 19:31:17,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:17,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483309706] [2020-10-12 19:31:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:18,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:18,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:31:18,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:31:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-12 19:31:18,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:31:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 19:31:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:31:18,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:18,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:18,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:18,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:31:18,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:18,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483309706] [2020-10-12 19:31:18,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:18,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:31:18,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891820450] [2020-10-12 19:31:18,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:31:18,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:18,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:31:18,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:31:18,690 INFO L87 Difference]: Start difference. First operand 1586 states and 2279 transitions. Second operand 6 states. [2020-10-12 19:31:18,833 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-12 19:31:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:21,043 INFO L93 Difference]: Finished difference Result 4457 states and 6508 transitions. [2020-10-12 19:31:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:31:21,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-12 19:31:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:21,047 INFO L225 Difference]: With dead ends: 4457 [2020-10-12 19:31:21,047 INFO L226 Difference]: Without dead ends: 2963 [2020-10-12 19:31:21,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:31:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-10-12 19:31:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2959. [2020-10-12 19:31:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2959 states. [2020-10-12 19:31:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4290 transitions. [2020-10-12 19:31:22,821 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4290 transitions. Word has length 80 [2020-10-12 19:31:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:22,821 INFO L479 AbstractCegarLoop]: Abstraction has 2959 states and 4290 transitions. [2020-10-12 19:31:22,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:31:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4290 transitions. [2020-10-12 19:31:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:31:22,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:22,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:31:22,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 19:31:22,824 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:22,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1085339671, now seen corresponding path program 1 times [2020-10-12 19:31:22,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:22,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265549438] [2020-10-12 19:31:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:22,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:23,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:25,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:31:27,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:31:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:31:27,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:31:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:31:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:31:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:28,457 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 19:31:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:28,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:31:28,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:31:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:31:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:31:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:28,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265549438] [2020-10-12 19:31:28,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:28,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 19:31:28,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158025562] [2020-10-12 19:31:28,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 19:31:28,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:28,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 19:31:28,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:31:28,529 INFO L87 Difference]: Start difference. First operand 2959 states and 4290 transitions. Second operand 18 states. [2020-10-12 19:31:28,660 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-12 19:31:29,047 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2020-10-12 19:31:29,978 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-12 19:31:30,142 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-12 19:31:30,312 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-12 19:31:32,951 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-12 19:31:33,095 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-12 19:31:33,812 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 19:31:44,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:44,613 INFO L93 Difference]: Finished difference Result 12651 states and 18074 transitions. [2020-10-12 19:31:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-12 19:31:44,614 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-12 19:31:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:44,623 INFO L225 Difference]: With dead ends: 12651 [2020-10-12 19:31:44,623 INFO L226 Difference]: Without dead ends: 10468 [2020-10-12 19:31:44,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=592, Invalid=2830, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 19:31:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2020-10-12 19:31:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 2989. [2020-10-12 19:31:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2989 states. [2020-10-12 19:31:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4332 transitions. [2020-10-12 19:31:46,508 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4332 transitions. Word has length 80 [2020-10-12 19:31:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:46,509 INFO L479 AbstractCegarLoop]: Abstraction has 2989 states and 4332 transitions. [2020-10-12 19:31:46,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 19:31:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4332 transitions. [2020-10-12 19:31:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:31:46,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:46,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:31:46,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 19:31:46,512 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1577719061, now seen corresponding path program 1 times [2020-10-12 19:31:46,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:46,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136551715] [2020-10-12 19:31:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:46,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:47,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:47,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:31:47,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:31:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-12 19:31:47,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:31:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:31:47,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:31:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:47,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:47,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:47,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:47,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:47,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:31:47,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:47,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:47,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136551715] [2020-10-12 19:31:47,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:47,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:31:47,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488530305] [2020-10-12 19:31:47,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:31:47,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:47,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:31:47,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:31:47,293 INFO L87 Difference]: Start difference. First operand 2989 states and 4332 transitions. Second operand 5 states. [2020-10-12 19:31:47,439 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 19:31:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:31:50,279 INFO L93 Difference]: Finished difference Result 6620 states and 9627 transitions. [2020-10-12 19:31:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:31:50,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 19:31:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:31:50,284 INFO L225 Difference]: With dead ends: 6620 [2020-10-12 19:31:50,285 INFO L226 Difference]: Without dead ends: 3737 [2020-10-12 19:31:50,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:31:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-10-12 19:31:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3708. [2020-10-12 19:31:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3708 states. [2020-10-12 19:31:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 5327 transitions. [2020-10-12 19:31:52,622 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 5327 transitions. Word has length 81 [2020-10-12 19:31:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:31:52,622 INFO L479 AbstractCegarLoop]: Abstraction has 3708 states and 5327 transitions. [2020-10-12 19:31:52,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:31:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 5327 transitions. [2020-10-12 19:31:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:31:52,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:52,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:31:52,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 19:31:52,625 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:31:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1755741458, now seen corresponding path program 1 times [2020-10-12 19:31:52,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:52,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579568666] [2020-10-12 19:31:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:57,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:57,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:31:57,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:31:57,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:31:57,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:31:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:31:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:31:57,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:58,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:58,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:58,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:58,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:31:58,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:31:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:31:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:58,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579568666] [2020-10-12 19:31:58,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:58,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:31:58,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447227347] [2020-10-12 19:31:58,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:31:58,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:58,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:31:58,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:31:58,213 INFO L87 Difference]: Start difference. First operand 3708 states and 5327 transitions. Second operand 19 states. [2020-10-12 19:31:58,345 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-12 19:31:58,787 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 124 [2020-10-12 19:31:59,855 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-12 19:32:00,049 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-12 19:32:00,215 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-12 19:32:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:09,145 INFO L93 Difference]: Finished difference Result 8411 states and 12111 transitions. [2020-10-12 19:32:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:32:09,147 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2020-10-12 19:32:09,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:09,152 INFO L225 Difference]: With dead ends: 8411 [2020-10-12 19:32:09,152 INFO L226 Difference]: Without dead ends: 6365 [2020-10-12 19:32:09,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=367, Invalid=1985, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 19:32:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2020-10-12 19:32:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 3712. [2020-10-12 19:32:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2020-10-12 19:32:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5333 transitions. [2020-10-12 19:32:11,615 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5333 transitions. Word has length 81 [2020-10-12 19:32:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:11,615 INFO L479 AbstractCegarLoop]: Abstraction has 3712 states and 5333 transitions. [2020-10-12 19:32:11,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:32:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5333 transitions. [2020-10-12 19:32:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:32:11,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:11,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:32:11,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 19:32:11,617 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:32:11,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:11,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1861438299, now seen corresponding path program 1 times [2020-10-12 19:32:11,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:11,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409292409] [2020-10-12 19:32:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:12,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking...