/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:18:00,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:18:00,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:18:00,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:18:00,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:18:00,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:18:00,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:18:00,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:18:00,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:18:00,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:18:00,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:18:00,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:18:00,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:18:00,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:18:00,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:18:00,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:18:00,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:18:00,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:18:00,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:18:00,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:18:00,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:18:00,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:18:00,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:18:00,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:18:00,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:18:00,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:18:00,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:18:00,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:18:00,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:18:00,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:18:00,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:18:00,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:18:00,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:18:00,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:18:00,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:18:00,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:18:00,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:18:00,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:18:00,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:18:00,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:18:00,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:18:00,953 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 [2020-09-24 18:18:00,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:18:00,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:18:00,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:18:00,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:18:00,985 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:18:00,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:18:00,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:18:00,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:18:00,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:18:00,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:18:00,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:18:00,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:18:00,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:18:00,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:18:00,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:18:00,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:18:00,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:18:00,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:18:00,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:18:00,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:18:00,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:18:00,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:18:00,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:18:00,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:18:00,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:18:00,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:18:00,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:18:00,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:18:00,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:18:00,990 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:18:01,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:18:01,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:18:01,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:18:01,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:18:01,500 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:18:01,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-24 18:18:01,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9aaa5836/191ff4dffaf043a88094916db9d011bf/FLAGadd85984f [2020-09-24 18:18:02,127 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:18:02,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-24 18:18:02,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9aaa5836/191ff4dffaf043a88094916db9d011bf/FLAGadd85984f [2020-09-24 18:18:02,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9aaa5836/191ff4dffaf043a88094916db9d011bf [2020-09-24 18:18:02,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:18:02,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:18:02,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:18:02,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:18:02,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:18:02,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:18:02" (1/1) ... [2020-09-24 18:18:02,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:02, skipping insertion in model container [2020-09-24 18:18:02,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:18:02" (1/1) ... [2020-09-24 18:18:02,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:18:02,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:18:02,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:18:02,926 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:18:02,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:18:03,061 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:18:03,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03 WrapperNode [2020-09-24 18:18:03,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:18:03,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:18:03,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:18:03,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:18:03,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (1/1) ... [2020-09-24 18:18:03,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (1/1) ... [2020-09-24 18:18:03,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (1/1) ... [2020-09-24 18:18:03,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (1/1) ... [2020-09-24 18:18:03,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (1/1) ... [2020-09-24 18:18:03,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (1/1) ... [2020-09-24 18:18:03,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (1/1) ... [2020-09-24 18:18:03,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:18:03,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:18:03,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:18:03,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:18:03,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (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 [2020-09-24 18:18:03,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:18:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:18:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 18:18:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:18:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:18:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:18:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:18:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:18:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:18:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:18:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:18:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:18:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:18:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:18:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:18:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:18:03,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:18:03,627 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:18:03,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:18:03 BoogieIcfgContainer [2020-09-24 18:18:03,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:18:03,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:18:03,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:18:03,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:18:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:18:02" (1/3) ... [2020-09-24 18:18:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7942708b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:18:03, skipping insertion in model container [2020-09-24 18:18:03,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:18:03" (2/3) ... [2020-09-24 18:18:03,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7942708b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:18:03, skipping insertion in model container [2020-09-24 18:18:03,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:18:03" (3/3) ... [2020-09-24 18:18:03,643 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-09-24 18:18:03,653 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:18:03,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:18:03,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:18:03,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:18:03,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:18:03,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:18:03,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:18:03,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:18:03,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:18:03,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:18:03,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:18:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-24 18:18:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 18:18:03,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:03,745 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] [2020-09-24 18:18:03,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash 144198137, now seen corresponding path program 1 times [2020-09-24 18:18:03,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:03,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352103908] [2020-09-24 18:18:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:04,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:18:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 18:18:04,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 18:18:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:04,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:18:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:04,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:18:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:04,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:18:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:04,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:04,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:04,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:18:04,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:04,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:04,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:04,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352103908] [2020-09-24 18:18:04,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:04,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:18:04,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252795511] [2020-09-24 18:18:04,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:18:04,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:04,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:18:04,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:18:04,421 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-09-24 18:18:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:04,602 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-24 18:18:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:18:04,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-24 18:18:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:04,618 INFO L225 Difference]: With dead ends: 124 [2020-09-24 18:18:04,619 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 18:18:04,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:18:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 18:18:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 18:18:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 18:18:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-24 18:18:04,681 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2020-09-24 18:18:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:04,682 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-24 18:18:04,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:18:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-24 18:18:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:18:04,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:04,685 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] [2020-09-24 18:18:04,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:18:04,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:04,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:04,686 INFO L82 PathProgramCache]: Analyzing trace with hash 608042528, now seen corresponding path program 1 times [2020-09-24 18:18:04,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:04,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849611587] [2020-09-24 18:18:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:05,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:05,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:18:05,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:05,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 18:18:05,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:18:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:18:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:18:05,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:05,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:05,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:05,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:05,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:18:05,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:18:05,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 18:18:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:05,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:05,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:18:05,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:05,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849611587] [2020-09-24 18:18:05,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:05,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:18:05,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68616730] [2020-09-24 18:18:05,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:18:05,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:05,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:18:05,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:18:05,834 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2020-09-24 18:18:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:05,999 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-09-24 18:18:06,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:18:06,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 18:18:06,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:06,002 INFO L225 Difference]: With dead ends: 104 [2020-09-24 18:18:06,002 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 18:18:06,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:18:06,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 18:18:06,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-09-24 18:18:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 18:18:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-09-24 18:18:06,017 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 46 [2020-09-24 18:18:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:06,018 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-09-24 18:18:06,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:18:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-09-24 18:18:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 18:18:06,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:06,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:06,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:18:06,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:06,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1644606330, now seen corresponding path program 1 times [2020-09-24 18:18:06,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:06,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288650770] [2020-09-24 18:18:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:07,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:18:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-09-24 18:18:07,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:18:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:18:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:18:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:07,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:07,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:07,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:18:07,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:07,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 18:18:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:07,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:07,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:07,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:07,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:18:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:07,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288650770] [2020-09-24 18:18:07,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:07,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:18:07,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69616930] [2020-09-24 18:18:07,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:18:07,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:07,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:18:07,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:18:07,686 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 6 states. [2020-09-24 18:18:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:07,872 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-09-24 18:18:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:18:07,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 18:18:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:07,874 INFO L225 Difference]: With dead ends: 114 [2020-09-24 18:18:07,874 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 18:18:07,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:18:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 18:18:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-09-24 18:18:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 18:18:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-24 18:18:07,884 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 56 [2020-09-24 18:18:07,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:07,885 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-24 18:18:07,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:18:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-24 18:18:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 18:18:07,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:07,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:07,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:18:07,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash 278397012, now seen corresponding path program 2 times [2020-09-24 18:18:07,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:07,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021627313] [2020-09-24 18:18:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:10,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:10,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:18:10,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:10,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2324 [2020-09-24 18:18:10,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:18:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:18:10,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:18:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:10,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:10,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:10,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:18:10,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:10,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:18:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:10,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:10,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:10,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:10,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:18:10,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:18:10,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021627313] [2020-09-24 18:18:10,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:10,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:18:10,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242607990] [2020-09-24 18:18:10,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:18:10,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:10,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:18:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:18:10,385 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 8 states. [2020-09-24 18:18:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:10,657 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-09-24 18:18:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:18:10,657 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-24 18:18:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:10,659 INFO L225 Difference]: With dead ends: 124 [2020-09-24 18:18:10,659 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 18:18:10,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:18:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 18:18:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-09-24 18:18:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 18:18:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-09-24 18:18:10,670 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 66 [2020-09-24 18:18:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:10,670 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-09-24 18:18:10,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:18:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-09-24 18:18:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 18:18:10,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:10,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:10,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:18:10,673 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:10,674 INFO L82 PathProgramCache]: Analyzing trace with hash 767198382, now seen corresponding path program 3 times [2020-09-24 18:18:10,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:10,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687414967] [2020-09-24 18:18:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:14,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:14,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:18:14,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:18:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3706 [2020-09-24 18:18:14,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:14,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:18:14,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:18:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:18:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:14,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:14,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:18:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-24 18:18:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:14,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:14,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:14,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:18:14,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:14,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 18:18:14,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687414967] [2020-09-24 18:18:14,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:18:14,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:18:14,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66344867] [2020-09-24 18:18:14,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:18:14,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:14,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:18:14,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:18:14,638 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 9 states. [2020-09-24 18:18:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:14,978 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2020-09-24 18:18:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:18:14,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-09-24 18:18:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:14,980 INFO L225 Difference]: With dead ends: 102 [2020-09-24 18:18:14,980 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 18:18:14,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:18:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 18:18:14,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-09-24 18:18:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 18:18:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-09-24 18:18:14,997 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 76 [2020-09-24 18:18:14,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:14,998 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-09-24 18:18:14,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:18:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-09-24 18:18:14,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 18:18:14,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:15,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:15,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:18:15,003 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:15,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2006860614, now seen corresponding path program 1 times [2020-09-24 18:18:15,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:15,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291339018] [2020-09-24 18:18:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:17,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:20,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 18:18:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:18:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:18:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:18:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:18:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:18:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:20,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:20,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:20,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:18:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:20,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:18:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:20,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:20,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:18:20,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 18:18:20,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291339018] [2020-09-24 18:18:20,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:20,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:18:20,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339024257] [2020-09-24 18:18:20,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:18:20,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:18:20,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:18:20,347 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 10 states. [2020-09-24 18:18:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:20,733 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2020-09-24 18:18:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:18:20,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-09-24 18:18:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:20,735 INFO L225 Difference]: With dead ends: 108 [2020-09-24 18:18:20,735 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 18:18:20,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:18:20,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 18:18:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2020-09-24 18:18:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-24 18:18:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-09-24 18:18:20,756 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 82 [2020-09-24 18:18:20,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:20,756 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-09-24 18:18:20,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:18:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-09-24 18:18:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 18:18:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:20,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:20,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:18:20,761 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:20,762 INFO L82 PathProgramCache]: Analyzing trace with hash -739332130, now seen corresponding path program 2 times [2020-09-24 18:18:20,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:20,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214657696] [2020-09-24 18:18:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:20,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:25,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:25,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 18:18:25,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:18:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:18:25,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:18:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:18:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:18:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:25,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:25,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:25,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:18:25,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:18:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:25,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:25,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:25,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:25,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:18:25,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 18:18:25,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214657696] [2020-09-24 18:18:25,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:25,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:18:25,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777626228] [2020-09-24 18:18:25,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:18:25,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:25,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:18:25,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:18:25,962 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 10 states. [2020-09-24 18:18:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:26,194 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2020-09-24 18:18:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:18:26,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-24 18:18:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:26,196 INFO L225 Difference]: With dead ends: 150 [2020-09-24 18:18:26,197 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 18:18:26,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:18:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 18:18:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-09-24 18:18:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-24 18:18:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-09-24 18:18:26,215 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 88 [2020-09-24 18:18:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:26,216 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-09-24 18:18:26,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:18:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-09-24 18:18:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-24 18:18:26,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:26,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:26,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:18:26,223 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:26,224 INFO L82 PathProgramCache]: Analyzing trace with hash 872813752, now seen corresponding path program 3 times [2020-09-24 18:18:26,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:26,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318990036] [2020-09-24 18:18:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:29,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:31,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:31,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 18:18:31,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:18:31,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:18:31,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:18:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-24 18:18:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:18:31,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:31,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:31,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:31,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:31,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:31,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:18:31,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:18:31,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:18:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:31,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:31,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:31,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:31,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:18:31,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:31,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 18:18:31,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318990036] [2020-09-24 18:18:31,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:31,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:18:31,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755964250] [2020-09-24 18:18:31,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:18:31,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:18:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:18:31,457 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 11 states. [2020-09-24 18:18:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:31,891 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2020-09-24 18:18:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:18:31,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-09-24 18:18:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:31,893 INFO L225 Difference]: With dead ends: 124 [2020-09-24 18:18:31,894 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 18:18:31,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:18:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 18:18:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2020-09-24 18:18:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-24 18:18:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2020-09-24 18:18:31,912 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 98 [2020-09-24 18:18:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:31,912 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2020-09-24 18:18:31,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:18:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2020-09-24 18:18:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 18:18:31,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:31,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:31,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:18:31,917 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:31,917 INFO L82 PathProgramCache]: Analyzing trace with hash -335797296, now seen corresponding path program 4 times [2020-09-24 18:18:31,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:31,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100764586] [2020-09-24 18:18:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:35,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:36,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:36,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-24 18:18:36,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:18:36,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:18:36,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:36,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:18:36,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:18:36,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:18:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:37,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:37,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:37,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:18:37,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:37,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:37,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 18:18:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:37,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:37,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:18:37,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:37,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 18:18:37,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100764586] [2020-09-24 18:18:37,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:37,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:18:37,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115133642] [2020-09-24 18:18:37,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:18:37,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:37,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:18:37,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:18:37,123 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 12 states. [2020-09-24 18:18:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:37,416 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-09-24 18:18:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:18:37,417 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-09-24 18:18:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:37,418 INFO L225 Difference]: With dead ends: 172 [2020-09-24 18:18:37,418 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 18:18:37,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-24 18:18:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 18:18:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 115. [2020-09-24 18:18:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-24 18:18:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-09-24 18:18:37,436 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 104 [2020-09-24 18:18:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:37,438 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-09-24 18:18:37,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:18:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-09-24 18:18:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 18:18:37,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:37,440 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:37,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:18:37,440 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:37,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1232245930, now seen corresponding path program 5 times [2020-09-24 18:18:37,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:37,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479174586] [2020-09-24 18:18:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:37,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:42,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:42,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 18:18:42,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:18:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 18:18:42,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:18:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 18:18:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:18:42,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:18:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:42,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:42,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:42,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:18:42,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:18:42,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:18:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:42,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:18:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:42,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:18:42,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:18:42,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:18:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:18:42,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:18:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:18:42,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:18:42,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:18:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:18:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-09-24 18:18:42,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479174586] [2020-09-24 18:18:42,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:18:42,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:18:42,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287329474] [2020-09-24 18:18:42,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:18:42,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:18:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:18:42,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:18:42,678 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 12 states. [2020-09-24 18:18:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:18:43,128 INFO L93 Difference]: Finished difference Result 140 states and 141 transitions. [2020-09-24 18:18:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:18:43,129 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-09-24 18:18:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:18:43,130 INFO L225 Difference]: With dead ends: 140 [2020-09-24 18:18:43,130 INFO L226 Difference]: Without dead ends: 124 [2020-09-24 18:18:43,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:18:43,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-24 18:18:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-09-24 18:18:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-24 18:18:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-09-24 18:18:43,138 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 114 [2020-09-24 18:18:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:18:43,138 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-09-24 18:18:43,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:18:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-09-24 18:18:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 18:18:43,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:18:43,141 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:18:43,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:18:43,142 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:18:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:18:43,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2037474882, now seen corresponding path program 6 times [2020-09-24 18:18:43,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:18:43,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313544224] [2020-09-24 18:18:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:18:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:18:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:18:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking...