/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.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:33:40,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:33:40,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:33:40,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:33:40,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:33:40,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:33:40,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:33:40,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:33:40,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:33:40,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:33:40,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:33:40,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:33:40,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:33:40,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:33:40,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:33:40,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:33:40,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:33:40,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:33:40,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:33:40,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:33:40,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:33:40,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:33:40,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:33:40,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:33:40,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:33:40,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:33:40,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:33:40,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:33:40,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:33:40,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:33:40,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:33:40,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:33:40,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:33:40,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:33:40,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:33:40,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:33:40,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:33:40,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:33:40,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:33:41,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:33:41,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:33:41,002 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 19:33:41,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:33:41,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:33:41,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:33:41,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:33:41,044 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:33:41,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:33:41,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:33:41,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:33:41,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:33:41,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:33:41,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:33:41,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:33:41,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:33:41,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:33:41,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:33:41,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:33:41,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:33:41,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:33:41,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:33:41,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:33:41,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:33:41,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:33:41,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:33:41,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:33:41,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:33:41,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:33:41,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:33:41,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:33:41,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:33:41,051 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 19:33:41,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:33:41,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:33:41,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:33:41,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:33:41,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:33:41,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 19:33:41,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a495a6c6/43c722eb5bd3409b841c5df5f2e11ddd/FLAGc83eb5767 [2020-10-12 19:33:42,099 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:33:42,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 19:33:42,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a495a6c6/43c722eb5bd3409b841c5df5f2e11ddd/FLAGc83eb5767 [2020-10-12 19:33:42,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a495a6c6/43c722eb5bd3409b841c5df5f2e11ddd [2020-10-12 19:33:42,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:33:42,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:33:42,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:33:42,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:33:42,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:33:42,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:33:42" (1/1) ... [2020-10-12 19:33:42,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ad46c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:42, skipping insertion in model container [2020-10-12 19:33:42,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:33:42" (1/1) ... [2020-10-12 19:33:42,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:33:42,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:33:43,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:33:43,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:33:43,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:33:43,784 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:33:43,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43 WrapperNode [2020-10-12 19:33:43,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:33:43,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:33:43,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:33:43,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:33:43,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (1/1) ... [2020-10-12 19:33:43,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (1/1) ... [2020-10-12 19:33:43,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (1/1) ... [2020-10-12 19:33:43,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (1/1) ... [2020-10-12 19:33:43,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (1/1) ... [2020-10-12 19:33:43,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (1/1) ... [2020-10-12 19:33:43,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (1/1) ... [2020-10-12 19:33:43,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:33:43,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:33:43,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:33:43,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:33:43,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (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 19:33:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:33:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:33:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:33:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:33:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:33:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:33:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:33:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:33:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:33:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:33:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:33:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:33:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:33:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:33:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:33:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:33:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:33:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:33:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:33:44,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:33:44,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:33:46,078 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:33:46,078 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:33:46,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:33:46 BoogieIcfgContainer [2020-10-12 19:33:46,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:33:46,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:33:46,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:33:46,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:33:46,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:33:42" (1/3) ... [2020-10-12 19:33:46,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f926bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:33:46, skipping insertion in model container [2020-10-12 19:33:46,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:33:43" (2/3) ... [2020-10-12 19:33:46,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f926bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:33:46, skipping insertion in model container [2020-10-12 19:33:46,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:33:46" (3/3) ... [2020-10-12 19:33:46,095 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 19:33:46,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:33:46,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-12 19:33:46,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-12 19:33:46,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:33:46,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:33:46,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:33:46,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:33:46,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:33:46,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:33:46,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:33:46,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:33:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2020-10-12 19:33:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:33:46,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:46,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:33:46,215 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:33:46,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:46,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2065452195, now seen corresponding path program 1 times [2020-10-12 19:33:46,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:46,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338701919] [2020-10-12 19:33:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:51,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:33:51,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:33:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:33:51,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:33:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:33:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:33:53,294 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:33:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:53,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:53,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:53,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 19:33:53,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:53,410 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 19:33:53,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338701919] [2020-10-12 19:33:53,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:53,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:33:53,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735558046] [2020-10-12 19:33:53,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:33:53,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:53,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:33:53,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:33:53,439 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 12 states. [2020-10-12 19:33:53,692 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 19:33:55,084 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 363 DAG size of output: 362 [2020-10-12 19:33:55,461 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-12 19:33:56,199 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 19:34:03,820 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 19:34:04,187 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 19:34:04,951 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 19:34:05,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:05,946 INFO L93 Difference]: Finished difference Result 2202 states and 3495 transitions. [2020-10-12 19:34:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:34:05,952 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:34:05,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:05,997 INFO L225 Difference]: With dead ends: 2202 [2020-10-12 19:34:05,997 INFO L226 Difference]: Without dead ends: 2113 [2020-10-12 19:34:06,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:34:06,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2020-10-12 19:34:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 569. [2020-10-12 19:34:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-12 19:34:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 701 transitions. [2020-10-12 19:34:06,130 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 701 transitions. Word has length 64 [2020-10-12 19:34:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:06,132 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 701 transitions. [2020-10-12 19:34:06,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 701 transitions. [2020-10-12 19:34:06,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:06,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:06,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:34:06,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:34:06,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:06,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:06,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1513076432, now seen corresponding path program 1 times [2020-10-12 19:34:06,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:06,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007304721] [2020-10-12 19:34:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:11,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:11,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:11,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:34:11,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 19:34:11,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:34:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:34:11,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:34:11,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 19:34:11,986 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:12,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:12,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:12,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:12,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:34:12,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:12,043 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 19:34:12,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007304721] [2020-10-12 19:34:12,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:12,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:34:12,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918005236] [2020-10-12 19:34:12,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:34:12,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:34:12,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:34:12,048 INFO L87 Difference]: Start difference. First operand 569 states and 701 transitions. Second operand 7 states. [2020-10-12 19:34:12,595 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-12 19:34:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:16,265 INFO L93 Difference]: Finished difference Result 1460 states and 1880 transitions. [2020-10-12 19:34:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:34:16,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-12 19:34:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:16,278 INFO L225 Difference]: With dead ends: 1460 [2020-10-12 19:34:16,278 INFO L226 Difference]: Without dead ends: 1301 [2020-10-12 19:34:16,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:34:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-10-12 19:34:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 753. [2020-10-12 19:34:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-12 19:34:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 977 transitions. [2020-10-12 19:34:16,415 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 977 transitions. Word has length 64 [2020-10-12 19:34:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:16,416 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 977 transitions. [2020-10-12 19:34:16,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:34:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 977 transitions. [2020-10-12 19:34:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:16,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:16,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:34:16,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:34:16,421 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:16,422 INFO L82 PathProgramCache]: Analyzing trace with hash -25720571, now seen corresponding path program 1 times [2020-10-12 19:34:16,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:16,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998110561] [2020-10-12 19:34:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:19,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:21,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:21,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:34:21,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:34:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:34:21,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:22,350 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:22,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:22,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:34:22,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:22,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:34:22,411 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 19:34:22,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998110561] [2020-10-12 19:34:22,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:22,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:34:22,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780408555] [2020-10-12 19:34:22,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:22,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:22,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:22,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:22,415 INFO L87 Difference]: Start difference. First operand 753 states and 977 transitions. Second operand 12 states. [2020-10-12 19:34:23,046 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-12 19:34:29,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:29,447 INFO L93 Difference]: Finished difference Result 3068 states and 4230 transitions. [2020-10-12 19:34:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 19:34:29,448 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:34:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:29,469 INFO L225 Difference]: With dead ends: 3068 [2020-10-12 19:34:29,469 INFO L226 Difference]: Without dead ends: 2784 [2020-10-12 19:34:29,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:34:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-10-12 19:34:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1292. [2020-10-12 19:34:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-12 19:34:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1765 transitions. [2020-10-12 19:34:29,675 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1765 transitions. Word has length 64 [2020-10-12 19:34:29,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:29,675 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1765 transitions. [2020-10-12 19:34:29,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1765 transitions. [2020-10-12 19:34:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:29,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:29,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:34:29,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:34:29,679 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:29,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1688705004, now seen corresponding path program 1 times [2020-10-12 19:34:29,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:29,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772797545] [2020-10-12 19:34:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:34,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:34,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:34,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:34:34,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:34:34,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:34:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:35,521 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:35,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:35,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:35,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:35,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 19:34:35,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:35,615 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 19:34:35,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772797545] [2020-10-12 19:34:35,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:35,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:34:35,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109648307] [2020-10-12 19:34:35,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:35,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:35,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:35,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:35,617 INFO L87 Difference]: Start difference. First operand 1292 states and 1765 transitions. Second operand 12 states. [2020-10-12 19:34:36,878 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 328 DAG size of output: 324 [2020-10-12 19:34:40,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:40,406 INFO L93 Difference]: Finished difference Result 2798 states and 3873 transitions. [2020-10-12 19:34:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:34:40,406 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:34:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:40,420 INFO L225 Difference]: With dead ends: 2798 [2020-10-12 19:34:40,420 INFO L226 Difference]: Without dead ends: 2204 [2020-10-12 19:34:40,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:34:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2020-10-12 19:34:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1310. [2020-10-12 19:34:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-10-12 19:34:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1835 transitions. [2020-10-12 19:34:40,617 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1835 transitions. Word has length 64 [2020-10-12 19:34:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:40,618 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1835 transitions. [2020-10-12 19:34:40,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1835 transitions. [2020-10-12 19:34:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:34:40,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:40,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:34:40,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:34:40,621 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1672186113, now seen corresponding path program 1 times [2020-10-12 19:34:40,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:40,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406064549] [2020-10-12 19:34:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:41,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:34:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:46,690 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:46,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:46,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:46,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:46,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 19:34:46,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:46,781 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 19:34:46,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406064549] [2020-10-12 19:34:46,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:46,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:34:46,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245403151] [2020-10-12 19:34:46,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:34:46,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:46,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:34:46,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:34:46,784 INFO L87 Difference]: Start difference. First operand 1310 states and 1835 transitions. Second operand 16 states. [2020-10-12 19:34:48,104 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 333 DAG size of output: 332 [2020-10-12 19:34:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:51,771 INFO L93 Difference]: Finished difference Result 2902 states and 4105 transitions. [2020-10-12 19:34:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:34:51,771 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-10-12 19:34:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:51,781 INFO L225 Difference]: With dead ends: 2902 [2020-10-12 19:34:51,782 INFO L226 Difference]: Without dead ends: 2169 [2020-10-12 19:34:51,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:34:51,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2020-10-12 19:34:52,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 1209. [2020-10-12 19:34:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-12 19:34:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1701 transitions. [2020-10-12 19:34:52,007 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1701 transitions. Word has length 64 [2020-10-12 19:34:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:52,007 INFO L479 AbstractCegarLoop]: Abstraction has 1209 states and 1701 transitions. [2020-10-12 19:34:52,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:34:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1701 transitions. [2020-10-12 19:34:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:34:52,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:52,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:34:52,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:34:52,010 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:52,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:52,010 INFO L82 PathProgramCache]: Analyzing trace with hash 978887721, now seen corresponding path program 1 times [2020-10-12 19:34:52,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:52,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184583231] [2020-10-12 19:34:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:52,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:53,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:53,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:57,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:34:57,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:34:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:34:57,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:34:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:34:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:58,061 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:58,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:58,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:34:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:58,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:58,124 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 19:34:58,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184583231] [2020-10-12 19:34:58,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:58,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:34:58,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350605096] [2020-10-12 19:34:58,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:34:58,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:58,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:34:58,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:34:58,128 INFO L87 Difference]: Start difference. First operand 1209 states and 1701 transitions. Second operand 15 states. [2020-10-12 19:34:59,507 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 344 DAG size of output: 343 [2020-10-12 19:35:00,267 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-12 19:35:00,518 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-12 19:35:00,783 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-12 19:35:03,974 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-12 19:35:05,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:05,450 INFO L93 Difference]: Finished difference Result 2525 states and 3559 transitions. [2020-10-12 19:35:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:35:05,451 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-12 19:35:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:05,459 INFO L225 Difference]: With dead ends: 2525 [2020-10-12 19:35:05,460 INFO L226 Difference]: Without dead ends: 2516 [2020-10-12 19:35:05,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=282, Invalid=1200, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:35:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2020-10-12 19:35:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1209. [2020-10-12 19:35:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-12 19:35:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1700 transitions. [2020-10-12 19:35:05,647 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1700 transitions. Word has length 66 [2020-10-12 19:35:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:05,648 INFO L479 AbstractCegarLoop]: Abstraction has 1209 states and 1700 transitions. [2020-10-12 19:35:05,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:35:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1700 transitions. [2020-10-12 19:35:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:35:05,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:05,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:35:05,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:35:05,650 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:05,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1848329389, now seen corresponding path program 1 times [2020-10-12 19:35:05,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:05,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563251584] [2020-10-12 19:35:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:05,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:10,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:10,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:35:10,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:35:10,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:35:10,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:10,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:35:10,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:10,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:35:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:10,994 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 19:35:11,170 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 19:35:11,335 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 19:35:12,258 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:35:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:12,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:12,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:35:12,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:35:12,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563251584] [2020-10-12 19:35:12,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:12,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:35:12,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148598429] [2020-10-12 19:35:12,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:35:12,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:35:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:35:12,321 INFO L87 Difference]: Start difference. First operand 1209 states and 1700 transitions. Second operand 15 states. [2020-10-12 19:35:12,647 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-10-12 19:35:14,141 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 387 DAG size of output: 378 [2020-10-12 19:35:14,505 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-12 19:35:14,846 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-12 19:35:15,174 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-12 19:35:15,539 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2020-10-12 19:35:16,022 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2020-10-12 19:35:16,453 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-10-12 19:35:16,905 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2020-10-12 19:35:17,296 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2020-10-12 19:35:17,953 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2020-10-12 19:35:18,323 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-10-12 19:35:18,723 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-12 19:35:19,241 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-10-12 19:35:19,802 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-12 19:35:20,472 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-12 19:35:22,597 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-10-12 19:35:22,989 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-10-12 19:35:23,434 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-12 19:35:23,800 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-12 19:35:24,300 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-12 19:35:24,651 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 19:35:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:25,985 INFO L93 Difference]: Finished difference Result 3965 states and 5672 transitions. [2020-10-12 19:35:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 19:35:25,986 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-12 19:35:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:26,001 INFO L225 Difference]: With dead ends: 3965 [2020-10-12 19:35:26,001 INFO L226 Difference]: Without dead ends: 3956 [2020-10-12 19:35:26,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:35:26,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2020-10-12 19:35:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 1215. [2020-10-12 19:35:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-12 19:35:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1708 transitions. [2020-10-12 19:35:26,327 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1708 transitions. Word has length 66 [2020-10-12 19:35:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:26,327 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1708 transitions. [2020-10-12 19:35:26,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:35:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1708 transitions. [2020-10-12 19:35:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:35:26,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:26,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:35:26,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:35:26,330 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:26,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2117479103, now seen corresponding path program 1 times [2020-10-12 19:35:26,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:26,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565430694] [2020-10-12 19:35:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:31,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:31,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:35:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:35:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:35:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:35:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:35:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:32,126 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:35:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:32,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:32,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:32,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:35:32,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:32,166 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 19:35:32,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565430694] [2020-10-12 19:35:32,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:32,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:35:32,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013607826] [2020-10-12 19:35:32,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:35:32,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:35:32,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:35:32,168 INFO L87 Difference]: Start difference. First operand 1215 states and 1708 transitions. Second operand 13 states. [2020-10-12 19:35:32,741 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2020-10-12 19:35:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:35,653 INFO L93 Difference]: Finished difference Result 2042 states and 2911 transitions. [2020-10-12 19:35:35,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:35:35,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-12 19:35:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:35,660 INFO L225 Difference]: With dead ends: 2042 [2020-10-12 19:35:35,661 INFO L226 Difference]: Without dead ends: 1404 [2020-10-12 19:35:35,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:35:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-12 19:35:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1185. [2020-10-12 19:35:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-10-12 19:35:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1663 transitions. [2020-10-12 19:35:35,914 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1663 transitions. Word has length 66 [2020-10-12 19:35:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:35,914 INFO L479 AbstractCegarLoop]: Abstraction has 1185 states and 1663 transitions. [2020-10-12 19:35:35,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:35:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1663 transitions. [2020-10-12 19:35:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:35:35,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:35,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:35:35,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:35:35,916 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:35,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1987095071, now seen corresponding path program 1 times [2020-10-12 19:35:35,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:35,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747511150] [2020-10-12 19:35:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:40,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:40,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:35:40,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:35:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:35:40,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:35:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:35:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:35:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:41,758 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:35:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:41,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:41,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:41,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:41,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:35:41,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:35:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:35:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:41,814 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 19:35:41,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747511150] [2020-10-12 19:35:41,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:41,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:35:41,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120378245] [2020-10-12 19:35:41,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:35:41,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:41,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:35:41,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:35:41,817 INFO L87 Difference]: Start difference. First operand 1185 states and 1663 transitions. Second operand 14 states. [2020-10-12 19:35:43,163 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 347 DAG size of output: 344 [2020-10-12 19:35:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:47,171 INFO L93 Difference]: Finished difference Result 1728 states and 2421 transitions. [2020-10-12 19:35:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:35:47,172 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-12 19:35:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:47,177 INFO L225 Difference]: With dead ends: 1728 [2020-10-12 19:35:47,177 INFO L226 Difference]: Without dead ends: 1709 [2020-10-12 19:35:47,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 19:35:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2020-10-12 19:35:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1185. [2020-10-12 19:35:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-10-12 19:35:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1662 transitions. [2020-10-12 19:35:47,375 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1662 transitions. Word has length 66 [2020-10-12 19:35:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:47,376 INFO L479 AbstractCegarLoop]: Abstraction has 1185 states and 1662 transitions. [2020-10-12 19:35:47,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:35:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1662 transitions. [2020-10-12 19:35:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:35:47,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:47,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:35:47,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:35:47,378 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:47,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -590623551, now seen corresponding path program 1 times [2020-10-12 19:35:47,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:47,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243122968] [2020-10-12 19:35:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:47,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:52,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:52,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:52,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:35:52,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:35:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 19:35:52,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:35:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:35:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:53,147 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-12 19:35:53,820 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:35:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:53,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:53,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:53,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:35:53,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:53,877 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 19:35:53,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243122968] [2020-10-12 19:35:53,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:53,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:35:53,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406908435] [2020-10-12 19:35:53,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 19:35:53,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:53,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 19:35:53,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:35:53,880 INFO L87 Difference]: Start difference. First operand 1185 states and 1662 transitions. Second operand 18 states. [2020-10-12 19:35:54,612 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-12 19:35:55,078 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-12 19:35:55,364 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-12 19:35:55,681 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2020-10-12 19:36:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:00,292 INFO L93 Difference]: Finished difference Result 2428 states and 3398 transitions. [2020-10-12 19:36:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:36:00,293 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-10-12 19:36:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:00,299 INFO L225 Difference]: With dead ends: 2428 [2020-10-12 19:36:00,299 INFO L226 Difference]: Without dead ends: 1808 [2020-10-12 19:36:00,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:36:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-10-12 19:36:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1195. [2020-10-12 19:36:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-10-12 19:36:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1677 transitions. [2020-10-12 19:36:00,510 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1677 transitions. Word has length 66 [2020-10-12 19:36:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:00,510 INFO L479 AbstractCegarLoop]: Abstraction has 1195 states and 1677 transitions. [2020-10-12 19:36:00,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 19:36:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1677 transitions. [2020-10-12 19:36:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 19:36:00,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:00,512 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] [2020-10-12 19:36:00,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:36:00,512 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:00,513 INFO L82 PathProgramCache]: Analyzing trace with hash -862497985, now seen corresponding path program 1 times [2020-10-12 19:36:00,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:00,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702791445] [2020-10-12 19:36:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:02,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:03,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:05,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 19:36:05,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 19:36:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 19:36:05,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:36:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:36:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:36:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:06,935 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:36:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:06,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:06,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:06,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 19:36:06,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:36:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:36:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:07,038 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 19:36:07,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702791445] [2020-10-12 19:36:07,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:07,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:36:07,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496276427] [2020-10-12 19:36:07,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:36:07,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:07,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:36:07,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:36:07,041 INFO L87 Difference]: Start difference. First operand 1195 states and 1677 transitions. Second operand 19 states. [2020-10-12 19:36:07,197 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-12 19:36:08,517 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 347 DAG size of output: 341 [2020-10-12 19:36:09,437 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-12 19:36:09,638 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-12 19:36:14,670 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-12 19:36:14,921 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-12 19:36:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:16,057 INFO L93 Difference]: Finished difference Result 3491 states and 5043 transitions. [2020-10-12 19:36:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 19:36:16,057 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-10-12 19:36:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:16,066 INFO L225 Difference]: With dead ends: 3491 [2020-10-12 19:36:16,067 INFO L226 Difference]: Without dead ends: 2860 [2020-10-12 19:36:16,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=425, Invalid=1467, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 19:36:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2020-10-12 19:36:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1192. [2020-10-12 19:36:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-10-12 19:36:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1672 transitions. [2020-10-12 19:36:16,296 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1672 transitions. Word has length 67 [2020-10-12 19:36:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:16,296 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1672 transitions. [2020-10-12 19:36:16,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:36:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1672 transitions. [2020-10-12 19:36:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:36:16,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:16,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:16,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:36:16,298 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:16,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:16,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1638758212, now seen corresponding path program 1 times [2020-10-12 19:36:16,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:16,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852548078] [2020-10-12 19:36:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:16,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:21,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:21,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:36:21,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:36:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:36:21,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:36:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:36:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:36:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:22,340 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:36:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:22,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:22,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:22,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:36:22,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:22,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:22,400 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 19:36:22,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852548078] [2020-10-12 19:36:22,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:22,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:36:22,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001149250] [2020-10-12 19:36:22,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:36:22,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:22,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:36:22,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:36:22,402 INFO L87 Difference]: Start difference. First operand 1192 states and 1672 transitions. Second operand 12 states. [2020-10-12 19:36:23,073 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2020-10-12 19:36:23,447 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-12 19:36:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:26,316 INFO L93 Difference]: Finished difference Result 1952 states and 2760 transitions. [2020-10-12 19:36:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:36:26,317 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 19:36:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:26,325 INFO L225 Difference]: With dead ends: 1952 [2020-10-12 19:36:26,326 INFO L226 Difference]: Without dead ends: 1939 [2020-10-12 19:36:26,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:36:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-10-12 19:36:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1184. [2020-10-12 19:36:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2020-10-12 19:36:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1663 transitions. [2020-10-12 19:36:26,599 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1663 transitions. Word has length 68 [2020-10-12 19:36:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:26,599 INFO L479 AbstractCegarLoop]: Abstraction has 1184 states and 1663 transitions. [2020-10-12 19:36:26,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:36:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1663 transitions. [2020-10-12 19:36:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:36:26,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:26,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:26,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:36:26,602 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash -603706778, now seen corresponding path program 1 times [2020-10-12 19:36:26,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:26,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726123612] [2020-10-12 19:36:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:31,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:31,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:36:31,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:36:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:36:31,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:36:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:36:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:36:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:32,346 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:36:32,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:32,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:32,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:32,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:32,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:36:32,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:36:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:36:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:32,410 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 19:36:32,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726123612] [2020-10-12 19:36:32,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:32,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:36:32,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920165436] [2020-10-12 19:36:32,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:36:32,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:32,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:36:32,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:36:32,413 INFO L87 Difference]: Start difference. First operand 1184 states and 1663 transitions. Second operand 13 states. [2020-10-12 19:36:33,756 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 331 DAG size of output: 327 [2020-10-12 19:36:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:37,013 INFO L93 Difference]: Finished difference Result 2446 states and 3493 transitions. [2020-10-12 19:36:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:36:37,013 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 19:36:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:37,020 INFO L225 Difference]: With dead ends: 2446 [2020-10-12 19:36:37,020 INFO L226 Difference]: Without dead ends: 1640 [2020-10-12 19:36:37,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:36:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-10-12 19:36:37,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1078. [2020-10-12 19:36:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1078 states. [2020-10-12 19:36:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1515 transitions. [2020-10-12 19:36:37,245 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1515 transitions. Word has length 68 [2020-10-12 19:36:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:37,246 INFO L479 AbstractCegarLoop]: Abstraction has 1078 states and 1515 transitions. [2020-10-12 19:36:37,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:36:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1515 transitions. [2020-10-12 19:36:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:36:37,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:37,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:37,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:36:37,248 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:37,248 INFO L82 PathProgramCache]: Analyzing trace with hash 872740413, now seen corresponding path program 1 times [2020-10-12 19:36:37,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:37,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088722766] [2020-10-12 19:36:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:42,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:42,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:36:42,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:36:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:36:42,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:36:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:36:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:36:42,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:42,898 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:36:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:42,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:42,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:36:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:42,951 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 19:36:42,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088722766] [2020-10-12 19:36:42,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:42,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:36:42,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534746501] [2020-10-12 19:36:42,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:36:42,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:42,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:36:42,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:36:42,952 INFO L87 Difference]: Start difference. First operand 1078 states and 1515 transitions. Second operand 12 states. [2020-10-12 19:36:43,560 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-12 19:36:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:47,324 INFO L93 Difference]: Finished difference Result 2739 states and 3949 transitions. [2020-10-12 19:36:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:36:47,325 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 19:36:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:47,331 INFO L225 Difference]: With dead ends: 2739 [2020-10-12 19:36:47,332 INFO L226 Difference]: Without dead ends: 2730 [2020-10-12 19:36:47,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:36:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2020-10-12 19:36:47,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1076. [2020-10-12 19:36:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-12 19:36:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1509 transitions. [2020-10-12 19:36:47,578 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1509 transitions. Word has length 68 [2020-10-12 19:36:47,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:47,579 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1509 transitions. [2020-10-12 19:36:47,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:36:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1509 transitions. [2020-10-12 19:36:47,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:36:47,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:47,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:47,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:36:47,580 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:47,581 INFO L82 PathProgramCache]: Analyzing trace with hash -805224888, now seen corresponding path program 1 times [2020-10-12 19:36:47,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:47,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511326459] [2020-10-12 19:36:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:52,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:52,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:52,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:36:52,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:36:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:36:52,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:36:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:36:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:36:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:53,466 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:36:53,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:53,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:53,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:53,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:53,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:36:53,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:36:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:36:53,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:53,525 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 19:36:53,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511326459] [2020-10-12 19:36:53,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:36:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911412586] [2020-10-12 19:36:53,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:36:53,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:36:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:36:53,526 INFO L87 Difference]: Start difference. First operand 1076 states and 1509 transitions. Second operand 17 states. [2020-10-12 19:36:54,914 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 343 DAG size of output: 336 [2020-10-12 19:37:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:02,087 INFO L93 Difference]: Finished difference Result 4754 states and 7002 transitions. [2020-10-12 19:37:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 19:37:02,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2020-10-12 19:37:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:02,098 INFO L225 Difference]: With dead ends: 4754 [2020-10-12 19:37:02,098 INFO L226 Difference]: Without dead ends: 4124 [2020-10-12 19:37:02,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=493, Invalid=1957, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 19:37:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4124 states. [2020-10-12 19:37:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4124 to 1076. [2020-10-12 19:37:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-12 19:37:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1508 transitions. [2020-10-12 19:37:02,435 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1508 transitions. Word has length 68 [2020-10-12 19:37:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:02,435 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1508 transitions. [2020-10-12 19:37:02,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:37:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1508 transitions. [2020-10-12 19:37:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:37:02,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:02,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:02,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:37:02,436 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:02,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:02,436 INFO L82 PathProgramCache]: Analyzing trace with hash -507482968, now seen corresponding path program 1 times [2020-10-12 19:37:02,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:02,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313870962] [2020-10-12 19:37:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:02,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:02,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:07,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:37:07,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:37:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:37:07,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:37:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:37:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:37:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:08,127 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:37:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:08,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:37:08,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:08,181 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 19:37:08,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313870962] [2020-10-12 19:37:08,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:08,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:37:08,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985602436] [2020-10-12 19:37:08,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:37:08,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:08,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:37:08,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:37:08,183 INFO L87 Difference]: Start difference. First operand 1076 states and 1508 transitions. Second operand 13 states. [2020-10-12 19:37:09,477 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 328 DAG size of output: 327 [2020-10-12 19:37:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:13,337 INFO L93 Difference]: Finished difference Result 2784 states and 4048 transitions. [2020-10-12 19:37:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:37:13,338 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 19:37:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:13,343 INFO L225 Difference]: With dead ends: 2784 [2020-10-12 19:37:13,344 INFO L226 Difference]: Without dead ends: 2125 [2020-10-12 19:37:13,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=205, Invalid=607, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:37:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-10-12 19:37:13,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1076. [2020-10-12 19:37:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-10-12 19:37:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1507 transitions. [2020-10-12 19:37:13,716 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1507 transitions. Word has length 68 [2020-10-12 19:37:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:13,716 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1507 transitions. [2020-10-12 19:37:13,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:37:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1507 transitions. [2020-10-12 19:37:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:37:13,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:13,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:13,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:37:13,718 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:13,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:13,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1664890488, now seen corresponding path program 1 times [2020-10-12 19:37:13,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:13,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034608813] [2020-10-12 19:37:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:18,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:37:18,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:37:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:37:18,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:37:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:37:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:37:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:19,491 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:37:19,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:19,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:19,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:37:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:19,531 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 19:37:19,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034608813] [2020-10-12 19:37:19,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:19,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:37:19,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57942239] [2020-10-12 19:37:19,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:37:19,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:19,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:37:19,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:37:19,533 INFO L87 Difference]: Start difference. First operand 1076 states and 1507 transitions. Second operand 12 states. [2020-10-12 19:37:20,200 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2020-10-12 19:37:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:24,272 INFO L93 Difference]: Finished difference Result 2875 states and 4150 transitions. [2020-10-12 19:37:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:37:24,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 19:37:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:24,281 INFO L225 Difference]: With dead ends: 2875 [2020-10-12 19:37:24,282 INFO L226 Difference]: Without dead ends: 2207 [2020-10-12 19:37:24,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:37:24,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-10-12 19:37:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1080. [2020-10-12 19:37:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2020-10-12 19:37:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1511 transitions. [2020-10-12 19:37:24,663 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1511 transitions. Word has length 68 [2020-10-12 19:37:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:24,663 INFO L479 AbstractCegarLoop]: Abstraction has 1080 states and 1511 transitions. [2020-10-12 19:37:24,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:37:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1511 transitions. [2020-10-12 19:37:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 19:37:24,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:24,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:24,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:37:24,665 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash 942912377, now seen corresponding path program 1 times [2020-10-12 19:37:24,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:24,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598984660] [2020-10-12 19:37:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:25,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking...