/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:13:26,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:13:26,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:13:26,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:13:26,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:13:26,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:13:26,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:13:26,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:13:26,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:13:26,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:13:26,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:13:26,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:13:26,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:13:26,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:13:26,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:13:26,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:13:26,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:13:26,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:13:26,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:13:26,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:13:26,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:13:26,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:13:26,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:13:26,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:13:26,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:13:26,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:13:26,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:13:26,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:13:26,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:13:26,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:13:26,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:13:26,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:13:26,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:13:27,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:13:27,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:13:27,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:13:27,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:13:27,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:13:27,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:13:27,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:13:27,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:13:27,008 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 [2020-09-25 12:13:27,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:13:27,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:13:27,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:13:27,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:13:27,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:13:27,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:13:27,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:13:27,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:13:27,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:13:27,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:13:27,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:13:27,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:13:27,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:13:27,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:13:27,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:13:27,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:13:27,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:13:27,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:13:27,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:13:27,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:13:27,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:13:27,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:27,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:13:27,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:13:27,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:13:27,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:13:27,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:13:27,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:13:27,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:13:27,066 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:13:27,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:13:27,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:13:27,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:13:27,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:13:27,544 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:13:27,545 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 12:13:27,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c509bdad/8822df20771f431391e19bf7162bc8a1/FLAG1b099ec01 [2020-09-25 12:13:28,216 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:13:28,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 12:13:28,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c509bdad/8822df20771f431391e19bf7162bc8a1/FLAG1b099ec01 [2020-09-25 12:13:28,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c509bdad/8822df20771f431391e19bf7162bc8a1 [2020-09-25 12:13:28,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:13:28,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:13:28,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:28,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:13:28,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:13:28,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:28" (1/1) ... [2020-09-25 12:13:28,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3027dde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:28, skipping insertion in model container [2020-09-25 12:13:28,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:28" (1/1) ... [2020-09-25 12:13:28,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:13:28,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:13:28,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:28,900 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:13:28,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:29,053 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:13:29,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29 WrapperNode [2020-09-25 12:13:29,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:29,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:13:29,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:13:29,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:13:29,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (1/1) ... [2020-09-25 12:13:29,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (1/1) ... [2020-09-25 12:13:29,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (1/1) ... [2020-09-25 12:13:29,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (1/1) ... [2020-09-25 12:13:29,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (1/1) ... [2020-09-25 12:13:29,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (1/1) ... [2020-09-25 12:13:29,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (1/1) ... [2020-09-25 12:13:29,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:13:29,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:13:29,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:13:29,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:13:29,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (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 [2020-09-25 12:13:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:13:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:13:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:13:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 12:13:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 12:13:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 12:13:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 12:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 12:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:13:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 12:13:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 12:13:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 12:13:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:13:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:13:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:13:29,805 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:13:29,805 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 12:13:29,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:29 BoogieIcfgContainer [2020-09-25 12:13:29,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:13:29,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:13:29,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:13:29,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:13:29,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:13:28" (1/3) ... [2020-09-25 12:13:29,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e79897e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:29, skipping insertion in model container [2020-09-25 12:13:29,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:29" (2/3) ... [2020-09-25 12:13:29,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e79897e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:29, skipping insertion in model container [2020-09-25 12:13:29,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:29" (3/3) ... [2020-09-25 12:13:29,822 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-09-25 12:13:29,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:13:29,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:13:29,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:13:29,896 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:13:29,896 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:13:29,896 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:13:29,896 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:13:29,896 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:13:29,897 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:13:29,897 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:13:29,897 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:13:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 12:13:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 12:13:29,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:29,938 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:29,938 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 12:13:29,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:29,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861704138] [2020-09-25 12:13:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:31,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:31,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:13:31,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:13:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1710 [2020-09-25 12:13:31,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:31,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 12:13:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 12:13:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:13:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:32,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:32,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:32,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:32,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:32,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:32,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:13:32,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:32,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:13:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:32,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:32,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 12:13:32,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:32,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:32,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:32,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:13:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 12:13:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:32,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:13:32,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:32,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:13:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 12:13:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:13:32,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:32,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:13:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:13:32,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 12:13:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:32,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:32,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:13:32,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:32,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:13:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 12:13:32,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861704138] [2020-09-25 12:13:32,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:32,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:13:32,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506809356] [2020-09-25 12:13:32,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:13:32,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:32,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:13:32,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:13:32,269 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 6 states. [2020-09-25 12:13:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:32,475 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2020-09-25 12:13:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:13:32,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-09-25 12:13:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:32,510 INFO L225 Difference]: With dead ends: 278 [2020-09-25 12:13:32,510 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 12:13:32,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:32,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 12:13:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2020-09-25 12:13:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 12:13:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2020-09-25 12:13:32,635 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 100 [2020-09-25 12:13:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:32,636 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2020-09-25 12:13:32,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:13:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2020-09-25 12:13:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 12:13:32,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:32,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:32,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:13:32,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1435857694, now seen corresponding path program 1 times [2020-09-25 12:13:32,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:32,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589795501] [2020-09-25 12:13:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:35,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 12:13:37,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:13:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:13:37,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:13:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 12:13:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:13:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:37,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:37,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:37,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:13:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:13:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:13:37,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:37,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 12:13:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:37,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:13:37,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:13:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:37,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 12:13:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:37,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:13:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:13:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 12:13:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:37,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:13:37,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:13:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 12:13:37,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589795501] [2020-09-25 12:13:37,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:37,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:13:38,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681441903] [2020-09-25 12:13:38,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:13:38,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:38,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:13:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:13:38,003 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand 11 states. [2020-09-25 12:13:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:38,674 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2020-09-25 12:13:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:13:38,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-09-25 12:13:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:38,680 INFO L225 Difference]: With dead ends: 423 [2020-09-25 12:13:38,681 INFO L226 Difference]: Without dead ends: 303 [2020-09-25 12:13:38,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:13:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-25 12:13:38,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 209. [2020-09-25 12:13:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-25 12:13:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 261 transitions. [2020-09-25 12:13:38,724 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 261 transitions. Word has length 104 [2020-09-25 12:13:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:38,725 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 261 transitions. [2020-09-25 12:13:38,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:13:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 261 transitions. [2020-09-25 12:13:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 12:13:38,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:38,728 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:38,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:13:38,729 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:38,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:38,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1576283257, now seen corresponding path program 1 times [2020-09-25 12:13:38,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:38,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56160521] [2020-09-25 12:13:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 12:13:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 12:13:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:13:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:13:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:39,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:39,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:39,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:13:39,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:13:39,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:13:39,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:13:39,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:13:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:39,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:39,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:13:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 12:13:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:39,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:39,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:39,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 12:13:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:39,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:39,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:39,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56160521] [2020-09-25 12:13:39,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:39,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 12:13:39,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502172003] [2020-09-25 12:13:39,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:13:39,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:39,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:13:39,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:13:39,278 INFO L87 Difference]: Start difference. First operand 209 states and 261 transitions. Second operand 4 states. [2020-09-25 12:13:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:39,383 INFO L93 Difference]: Finished difference Result 402 states and 524 transitions. [2020-09-25 12:13:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:13:39,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 12:13:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:39,387 INFO L225 Difference]: With dead ends: 402 [2020-09-25 12:13:39,387 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 12:13:39,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:13:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 12:13:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2020-09-25 12:13:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 12:13:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2020-09-25 12:13:39,420 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 107 [2020-09-25 12:13:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:39,421 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2020-09-25 12:13:39,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:13:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2020-09-25 12:13:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 12:13:39,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:39,425 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:39,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:13:39,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:39,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:39,426 INFO L82 PathProgramCache]: Analyzing trace with hash 962611898, now seen corresponding path program 1 times [2020-09-25 12:13:39,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:39,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856261341] [2020-09-25 12:13:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 12:13:39,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 12:13:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:13:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:13:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:39,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:39,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:39,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:13:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:13:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:39,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:13:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:13:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 12:13:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:40,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:40,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 12:13:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:40,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:40,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 12:13:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:40,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:13:40,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:13:40,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856261341] [2020-09-25 12:13:40,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:40,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 12:13:40,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631739913] [2020-09-25 12:13:40,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:13:40,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:40,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:13:40,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:13:40,068 INFO L87 Difference]: Start difference. First operand 224 states and 289 transitions. Second operand 4 states. [2020-09-25 12:13:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:40,166 INFO L93 Difference]: Finished difference Result 401 states and 526 transitions. [2020-09-25 12:13:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:13:40,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-09-25 12:13:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:40,170 INFO L225 Difference]: With dead ends: 401 [2020-09-25 12:13:40,170 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 12:13:40,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:13:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 12:13:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 223. [2020-09-25 12:13:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-09-25 12:13:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 286 transitions. [2020-09-25 12:13:40,194 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 286 transitions. Word has length 109 [2020-09-25 12:13:40,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:40,194 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 286 transitions. [2020-09-25 12:13:40,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:13:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 286 transitions. [2020-09-25 12:13:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 12:13:40,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:40,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:40,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:13:40,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:40,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1005724545, now seen corresponding path program 1 times [2020-09-25 12:13:40,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:40,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033416490] [2020-09-25 12:13:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:13:40,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-25 12:13:40,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:40,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:40,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:13:40,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:40,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:40,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:40,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:40,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 12:13:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:13:40,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:13:40,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 12:13:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:40,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 12:13:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 12:13:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:40,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:40,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:13:40,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:40,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:40,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:40,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033416490] [2020-09-25 12:13:40,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:40,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:13:40,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641793898] [2020-09-25 12:13:40,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:13:40,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:40,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:13:40,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:13:40,920 INFO L87 Difference]: Start difference. First operand 223 states and 286 transitions. Second operand 5 states. [2020-09-25 12:13:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:41,046 INFO L93 Difference]: Finished difference Result 424 states and 558 transitions. [2020-09-25 12:13:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:13:41,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 12:13:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:41,050 INFO L225 Difference]: With dead ends: 424 [2020-09-25 12:13:41,050 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 12:13:41,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 12:13:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 233. [2020-09-25 12:13:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-25 12:13:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 299 transitions. [2020-09-25 12:13:41,070 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 299 transitions. Word has length 112 [2020-09-25 12:13:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:41,071 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 299 transitions. [2020-09-25 12:13:41,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:13:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 299 transitions. [2020-09-25 12:13:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 12:13:41,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:41,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:41,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:13:41,075 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:41,075 INFO L82 PathProgramCache]: Analyzing trace with hash -252615503, now seen corresponding path program 1 times [2020-09-25 12:13:41,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:41,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022137091] [2020-09-25 12:13:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:41,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:13:41,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:41,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-25 12:13:41,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:41,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:41,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:41,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:41,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:13:41,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:41,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:41,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:41,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:41,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:41,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 12:13:41,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:41,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:13:41,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:41,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:13:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:41,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 12:13:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:41,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:41,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:41,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:41,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:41,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:41,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 12:13:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:41,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:41,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:41,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 12:13:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:41,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:41,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:41,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:41,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:41,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:13:41,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022137091] [2020-09-25 12:13:41,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:41,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:13:41,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976733133] [2020-09-25 12:13:41,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:13:41,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:41,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:13:41,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:13:41,789 INFO L87 Difference]: Start difference. First operand 233 states and 299 transitions. Second operand 5 states. [2020-09-25 12:13:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:41,929 INFO L93 Difference]: Finished difference Result 440 states and 585 transitions. [2020-09-25 12:13:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:13:41,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 12:13:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:41,932 INFO L225 Difference]: With dead ends: 440 [2020-09-25 12:13:41,933 INFO L226 Difference]: Without dead ends: 251 [2020-09-25 12:13:41,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-25 12:13:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 224. [2020-09-25 12:13:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 12:13:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 285 transitions. [2020-09-25 12:13:41,951 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 285 transitions. Word has length 112 [2020-09-25 12:13:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:41,952 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 285 transitions. [2020-09-25 12:13:41,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:13:41,952 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 285 transitions. [2020-09-25 12:13:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 12:13:41,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:41,955 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:41,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:13:41,956 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:41,956 INFO L82 PathProgramCache]: Analyzing trace with hash -515723641, now seen corresponding path program 2 times [2020-09-25 12:13:41,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:41,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892972421] [2020-09-25 12:13:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 12:13:42,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-09-25 12:13:42,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:13:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:42,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:42,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 12:13:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 12:13:42,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:13:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 12:13:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:42,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:42,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 12:13:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:42,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:42,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:42,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 12:13:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:42,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:42,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:42,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892972421] [2020-09-25 12:13:42,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:42,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:13:42,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015880644] [2020-09-25 12:13:42,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:13:42,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:42,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:13:42,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:13:42,882 INFO L87 Difference]: Start difference. First operand 224 states and 285 transitions. Second operand 6 states. [2020-09-25 12:13:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:43,013 INFO L93 Difference]: Finished difference Result 434 states and 578 transitions. [2020-09-25 12:13:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:13:43,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 12:13:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:43,016 INFO L225 Difference]: With dead ends: 434 [2020-09-25 12:13:43,016 INFO L226 Difference]: Without dead ends: 262 [2020-09-25 12:13:43,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:13:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-25 12:13:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 234. [2020-09-25 12:13:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 12:13:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 298 transitions. [2020-09-25 12:13:43,035 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 298 transitions. Word has length 117 [2020-09-25 12:13:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:43,036 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 298 transitions. [2020-09-25 12:13:43,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:13:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 298 transitions. [2020-09-25 12:13:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 12:13:43,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:43,039 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:43,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:13:43,039 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:43,040 INFO L82 PathProgramCache]: Analyzing trace with hash 237385401, now seen corresponding path program 1 times [2020-09-25 12:13:43,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:43,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137351247] [2020-09-25 12:13:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 12:13:43,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:43,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-09-25 12:13:43,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:43,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:13:43,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:43,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:43,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:43,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:43,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:43,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:43,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:43,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:43,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 12:13:43,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 12:13:43,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:13:43,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 12:13:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 12:13:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:43,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:43,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:43,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:43,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:43,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:43,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 12:13:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:43,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:44,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:44,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:13:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:44,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:13:44,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137351247] [2020-09-25 12:13:44,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:44,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:13:44,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993488298] [2020-09-25 12:13:44,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:13:44,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:44,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:13:44,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:13:44,044 INFO L87 Difference]: Start difference. First operand 234 states and 298 transitions. Second operand 6 states. [2020-09-25 12:13:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:44,175 INFO L93 Difference]: Finished difference Result 430 states and 573 transitions. [2020-09-25 12:13:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:13:44,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 12:13:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:44,179 INFO L225 Difference]: With dead ends: 430 [2020-09-25 12:13:44,179 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 12:13:44,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 12:13:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 234. [2020-09-25 12:13:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 12:13:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 298 transitions. [2020-09-25 12:13:44,201 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 298 transitions. Word has length 117 [2020-09-25 12:13:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:44,202 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 298 transitions. [2020-09-25 12:13:44,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:13:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 298 transitions. [2020-09-25 12:13:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 12:13:44,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:44,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:44,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:13:44,206 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:44,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:44,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1273487743, now seen corresponding path program 3 times [2020-09-25 12:13:44,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:44,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183942164] [2020-09-25 12:13:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 12:13:45,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-25 12:13:45,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:13:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:45,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:45,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:45,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:13:45,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:13:45,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:13:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:45,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 12:13:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:45,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:45,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:45,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:45,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:45,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:45,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 12:13:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:45,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:45,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:45,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 12:13:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:45,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:45,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:45,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183942164] [2020-09-25 12:13:45,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:45,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:13:45,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415789882] [2020-09-25 12:13:45,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:13:45,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:45,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:13:45,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:45,312 INFO L87 Difference]: Start difference. First operand 234 states and 298 transitions. Second operand 7 states. [2020-09-25 12:13:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:45,432 INFO L93 Difference]: Finished difference Result 469 states and 630 transitions. [2020-09-25 12:13:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:13:45,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 12:13:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:45,436 INFO L225 Difference]: With dead ends: 469 [2020-09-25 12:13:45,436 INFO L226 Difference]: Without dead ends: 292 [2020-09-25 12:13:45,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-25 12:13:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 244. [2020-09-25 12:13:45,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-25 12:13:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 311 transitions. [2020-09-25 12:13:45,458 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 311 transitions. Word has length 122 [2020-09-25 12:13:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:45,458 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 311 transitions. [2020-09-25 12:13:45,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:13:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 311 transitions. [2020-09-25 12:13:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 12:13:45,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:45,461 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:45,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:13:45,462 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:45,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2026596785, now seen corresponding path program 2 times [2020-09-25 12:13:45,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:45,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848817680] [2020-09-25 12:13:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 12:13:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-25 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:13:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:46,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:46,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:46,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:46,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:46,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:46,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:13:46,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 12:13:46,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:13:46,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 12:13:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:46,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:46,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 12:13:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:46,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:46,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 12:13:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:46,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:46,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:13:46,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848817680] [2020-09-25 12:13:46,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:46,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:13:46,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785504915] [2020-09-25 12:13:46,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:13:46,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:46,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:13:46,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:46,607 INFO L87 Difference]: Start difference. First operand 244 states and 311 transitions. Second operand 7 states. [2020-09-25 12:13:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:46,902 INFO L93 Difference]: Finished difference Result 466 states and 626 transitions. [2020-09-25 12:13:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:13:46,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 12:13:46,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:46,907 INFO L225 Difference]: With dead ends: 466 [2020-09-25 12:13:46,907 INFO L226 Difference]: Without dead ends: 281 [2020-09-25 12:13:46,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:13:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-25 12:13:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 244. [2020-09-25 12:13:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-25 12:13:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 309 transitions. [2020-09-25 12:13:46,943 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 309 transitions. Word has length 122 [2020-09-25 12:13:46,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:46,943 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 309 transitions. [2020-09-25 12:13:46,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:13:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 309 transitions. [2020-09-25 12:13:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 12:13:46,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:46,946 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:46,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:13:46,947 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1176254073, now seen corresponding path program 4 times [2020-09-25 12:13:46,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:46,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260930012] [2020-09-25 12:13:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 12:13:47,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:47,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-09-25 12:13:47,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:13:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:47,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:47,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:47,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:13:48,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 12:13:48,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:13:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 12:13:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 12:13:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:48,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:48,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:48,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 12:13:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:48,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:48,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:48,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260930012] [2020-09-25 12:13:48,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:48,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:13:48,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072086807] [2020-09-25 12:13:48,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:13:48,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:48,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:13:48,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:48,192 INFO L87 Difference]: Start difference. First operand 244 states and 309 transitions. Second operand 8 states. [2020-09-25 12:13:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:48,417 INFO L93 Difference]: Finished difference Result 484 states and 656 transitions. [2020-09-25 12:13:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:13:48,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 12:13:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:48,422 INFO L225 Difference]: With dead ends: 484 [2020-09-25 12:13:48,422 INFO L226 Difference]: Without dead ends: 302 [2020-09-25 12:13:48,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:13:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-25 12:13:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 254. [2020-09-25 12:13:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-25 12:13:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 322 transitions. [2020-09-25 12:13:48,448 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 322 transitions. Word has length 127 [2020-09-25 12:13:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:48,448 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 322 transitions. [2020-09-25 12:13:48,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:13:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 322 transitions. [2020-09-25 12:13:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 12:13:48,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:48,452 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:48,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:13:48,452 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:48,452 INFO L82 PathProgramCache]: Analyzing trace with hash -423145031, now seen corresponding path program 3 times [2020-09-25 12:13:48,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:48,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513858505] [2020-09-25 12:13:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 12:13:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-25 12:13:49,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:13:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:49,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:49,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:49,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:13:49,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 12:13:49,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:13:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 12:13:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:49,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:49,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 12:13:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:49,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 12:13:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:13:49,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513858505] [2020-09-25 12:13:49,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:49,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:13:49,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193950004] [2020-09-25 12:13:49,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:13:49,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:49,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:13:49,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:13:49,832 INFO L87 Difference]: Start difference. First operand 254 states and 322 transitions. Second operand 8 states. [2020-09-25 12:13:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:50,237 INFO L93 Difference]: Finished difference Result 485 states and 653 transitions. [2020-09-25 12:13:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:13:50,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 12:13:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:50,241 INFO L225 Difference]: With dead ends: 485 [2020-09-25 12:13:50,241 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 12:13:50,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:13:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 12:13:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 254. [2020-09-25 12:13:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-25 12:13:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 321 transitions. [2020-09-25 12:13:50,265 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 321 transitions. Word has length 127 [2020-09-25 12:13:50,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:50,266 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 321 transitions. [2020-09-25 12:13:50,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:13:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 321 transitions. [2020-09-25 12:13:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:13:50,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:50,270 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:50,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:13:50,270 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:50,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1027627393, now seen corresponding path program 5 times [2020-09-25 12:13:50,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:50,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406676554] [2020-09-25 12:13:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:13:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-09-25 12:13:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 12:13:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:51,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:51,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:51,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:51,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:13:51,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 12:13:51,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:13:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 12:13:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 12:13:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:51,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 12:13:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:51,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:51,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:51,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:51,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406676554] [2020-09-25 12:13:51,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:51,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:13:51,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183253910] [2020-09-25 12:13:51,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:13:51,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:13:51,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:13:51,755 INFO L87 Difference]: Start difference. First operand 254 states and 321 transitions. Second operand 9 states. [2020-09-25 12:13:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:51,955 INFO L93 Difference]: Finished difference Result 509 states and 695 transitions. [2020-09-25 12:13:51,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:13:51,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 12:13:51,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:51,959 INFO L225 Difference]: With dead ends: 509 [2020-09-25 12:13:51,960 INFO L226 Difference]: Without dead ends: 322 [2020-09-25 12:13:51,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:13:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-25 12:13:52,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-09-25 12:13:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-25 12:13:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 334 transitions. [2020-09-25 12:13:52,006 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 334 transitions. Word has length 132 [2020-09-25 12:13:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:52,006 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 334 transitions. [2020-09-25 12:13:52,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:13:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 334 transitions. [2020-09-25 12:13:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:13:52,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:52,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:52,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:13:52,014 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash -274518351, now seen corresponding path program 4 times [2020-09-25 12:13:52,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:52,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64607940] [2020-09-25 12:13:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:13:53,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-09-25 12:13:53,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:53,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:13:53,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:53,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:53,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:53,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:53,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:13:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 12:13:53,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:13:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 12:13:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:53,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:53,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:53,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 12:13:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:53,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:53,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 12:13:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:53,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:53,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:53,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:53,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:53,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:53,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:53,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:53,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:53,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:13:53,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64607940] [2020-09-25 12:13:53,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:53,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:13:53,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148787081] [2020-09-25 12:13:53,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:13:53,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:53,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:13:53,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:13:53,561 INFO L87 Difference]: Start difference. First operand 264 states and 334 transitions. Second operand 9 states. [2020-09-25 12:13:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:54,040 INFO L93 Difference]: Finished difference Result 505 states and 682 transitions. [2020-09-25 12:13:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:13:54,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 12:13:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:54,044 INFO L225 Difference]: With dead ends: 505 [2020-09-25 12:13:54,044 INFO L226 Difference]: Without dead ends: 311 [2020-09-25 12:13:54,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:13:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-09-25 12:13:54,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 264. [2020-09-25 12:13:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-25 12:13:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 333 transitions. [2020-09-25 12:13:54,075 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 333 transitions. Word has length 132 [2020-09-25 12:13:54,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:54,076 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 333 transitions. [2020-09-25 12:13:54,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:13:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 333 transitions. [2020-09-25 12:13:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 12:13:54,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:54,079 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:54,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 12:13:54,079 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:54,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:54,080 INFO L82 PathProgramCache]: Analyzing trace with hash 471803015, now seen corresponding path program 6 times [2020-09-25 12:13:54,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:54,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775999200] [2020-09-25 12:13:54,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 12:13:55,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-09-25 12:13:55,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:13:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:13:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:55,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:55,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:13:55,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 12:13:55,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:13:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:13:55,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 12:13:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:55,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:55,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 12:13:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:55,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:55,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 12:13:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:55,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:55,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:55,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:55,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:55,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 6 proven. 99 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:55,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775999200] [2020-09-25 12:13:55,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:55,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:13:55,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990094223] [2020-09-25 12:13:55,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:13:55,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:55,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:13:55,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:13:55,637 INFO L87 Difference]: Start difference. First operand 264 states and 333 transitions. Second operand 10 states. [2020-09-25 12:13:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:55,894 INFO L93 Difference]: Finished difference Result 534 states and 734 transitions. [2020-09-25 12:13:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:13:55,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 12:13:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:55,905 INFO L225 Difference]: With dead ends: 534 [2020-09-25 12:13:55,905 INFO L226 Difference]: Without dead ends: 342 [2020-09-25 12:13:55,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:13:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-25 12:13:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 274. [2020-09-25 12:13:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 12:13:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 346 transitions. [2020-09-25 12:13:55,940 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 346 transitions. Word has length 137 [2020-09-25 12:13:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:55,941 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 346 transitions. [2020-09-25 12:13:55,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:13:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 346 transitions. [2020-09-25 12:13:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 12:13:55,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:55,944 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:55,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 12:13:55,944 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1224912057, now seen corresponding path program 5 times [2020-09-25 12:13:55,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:55,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510736212] [2020-09-25 12:13:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 12:13:57,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-09-25 12:13:57,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:13:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:13:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 12:13:57,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:57,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:57,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:57,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:57,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:13:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 12:13:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:13:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:13:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 12:13:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 12:13:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:57,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:57,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:57,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:57,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 12:13:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:57,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:57,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:57,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 12:13:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:57,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:57,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:13:57,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 89 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:13:57,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510736212] [2020-09-25 12:13:57,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:57,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:13:57,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850195233] [2020-09-25 12:13:57,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:13:57,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:57,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:13:57,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:13:57,688 INFO L87 Difference]: Start difference. First operand 274 states and 346 transitions. Second operand 10 states. [2020-09-25 12:13:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:58,168 INFO L93 Difference]: Finished difference Result 525 states and 711 transitions. [2020-09-25 12:13:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:13:58,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 12:13:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:58,171 INFO L225 Difference]: With dead ends: 525 [2020-09-25 12:13:58,172 INFO L226 Difference]: Without dead ends: 326 [2020-09-25 12:13:58,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:13:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-09-25 12:13:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 274. [2020-09-25 12:13:58,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 12:13:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 345 transitions. [2020-09-25 12:13:58,198 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 345 transitions. Word has length 137 [2020-09-25 12:13:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:58,198 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 345 transitions. [2020-09-25 12:13:58,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:13:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 345 transitions. [2020-09-25 12:13:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:13:58,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:58,201 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:58,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 12:13:58,201 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:58,202 INFO L82 PathProgramCache]: Analyzing trace with hash -698012801, now seen corresponding path program 7 times [2020-09-25 12:13:58,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:58,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172729373] [2020-09-25 12:13:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:58,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:59,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 12:13:59,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:59,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-09-25 12:13:59,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:59,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:13:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:13:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 12:13:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:59,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:59,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:59,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:59,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:13:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:13:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:59,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:59,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:59,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:13:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:13:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:59,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:13:59,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 12:13:59,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:59,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:13:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:13:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:13:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 12:13:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:59,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:59,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:59,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:59,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:13:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 12:13:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:13:59,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:59,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:59,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:13:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:59,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:59,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 12:13:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:59,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:13:59,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:59,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:59,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:13:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 6 proven. 131 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:13:59,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172729373] [2020-09-25 12:13:59,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:59,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:13:59,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816883802] [2020-09-25 12:13:59,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:13:59,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:59,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:13:59,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:13:59,959 INFO L87 Difference]: Start difference. First operand 274 states and 345 transitions. Second operand 11 states. [2020-09-25 12:14:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:00,206 INFO L93 Difference]: Finished difference Result 559 states and 773 transitions. [2020-09-25 12:14:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:14:00,207 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-09-25 12:14:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:00,210 INFO L225 Difference]: With dead ends: 559 [2020-09-25 12:14:00,210 INFO L226 Difference]: Without dead ends: 362 [2020-09-25 12:14:00,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:14:00,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-09-25 12:14:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 284. [2020-09-25 12:14:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-25 12:14:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 358 transitions. [2020-09-25 12:14:00,239 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 358 transitions. Word has length 142 [2020-09-25 12:14:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:00,240 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 358 transitions. [2020-09-25 12:14:00,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:14:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 358 transitions. [2020-09-25 12:14:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:14:00,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:00,242 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:00,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 12:14:00,243 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:00,243 INFO L82 PathProgramCache]: Analyzing trace with hash 55096241, now seen corresponding path program 6 times [2020-09-25 12:14:00,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:00,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810174269] [2020-09-25 12:14:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:01,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 12:14:01,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-09-25 12:14:01,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:01,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:14:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:14:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:14:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:01,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:01,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:01,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:01,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:14:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:01,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:01,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:01,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:01,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:14:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:01,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:14:01,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:01,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 12:14:01,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:01,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:14:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:14:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 12:14:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:02,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:02,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:02,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:02,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:02,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 12:14:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:02,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:02,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 12:14:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:14:02,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:14:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 119 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:14:02,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810174269] [2020-09-25 12:14:02,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:02,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:14:02,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104394920] [2020-09-25 12:14:02,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:14:02,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:02,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:14:02,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:14:02,204 INFO L87 Difference]: Start difference. First operand 284 states and 358 transitions. Second operand 11 states. [2020-09-25 12:14:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:02,557 INFO L93 Difference]: Finished difference Result 525 states and 713 transitions. [2020-09-25 12:14:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:14:02,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-09-25 12:14:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:02,562 INFO L225 Difference]: With dead ends: 525 [2020-09-25 12:14:02,563 INFO L226 Difference]: Without dead ends: 330 [2020-09-25 12:14:02,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:14:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-25 12:14:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 284. [2020-09-25 12:14:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-25 12:14:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 358 transitions. [2020-09-25 12:14:02,603 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 358 transitions. Word has length 142 [2020-09-25 12:14:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:02,603 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 358 transitions. [2020-09-25 12:14:02,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:14:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 358 transitions. [2020-09-25 12:14:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 12:14:02,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:02,608 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:02,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 12:14:02,609 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:02,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2082783111, now seen corresponding path program 8 times [2020-09-25 12:14:02,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:02,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985852264] [2020-09-25 12:14:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 12:14:04,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:04,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1482 [2020-09-25 12:14:04,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:14:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:14:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:14:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:04,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:04,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:04,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:14:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:14:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:04,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:04,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:04,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:04,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:04,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:04,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:14:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 12:14:04,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 12:14:04,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:14:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:14:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 12:14:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 12:14:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 12:14:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:04,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:04,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-25 12:14:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:14:04,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:14:04,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:14:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:14:04,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985852264] [2020-09-25 12:14:04,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:04,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:14:04,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628889273] [2020-09-25 12:14:04,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:14:04,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:04,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:14:04,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:14:04,533 INFO L87 Difference]: Start difference. First operand 284 states and 358 transitions. Second operand 12 states. [2020-09-25 12:14:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:04,866 INFO L93 Difference]: Finished difference Result 590 states and 819 transitions. [2020-09-25 12:14:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:14:04,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-09-25 12:14:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:04,871 INFO L225 Difference]: With dead ends: 590 [2020-09-25 12:14:04,872 INFO L226 Difference]: Without dead ends: 388 [2020-09-25 12:14:04,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:14:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-09-25 12:14:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 294. [2020-09-25 12:14:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-09-25 12:14:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 371 transitions. [2020-09-25 12:14:04,903 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 371 transitions. Word has length 147 [2020-09-25 12:14:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:04,903 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 371 transitions. [2020-09-25 12:14:04,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:14:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 371 transitions. [2020-09-25 12:14:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 12:14:04,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:04,906 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:04,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 12:14:04,906 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:04,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1459075143, now seen corresponding path program 7 times [2020-09-25 12:14:04,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:04,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675487863] [2020-09-25 12:14:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 12:14:06,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1513 [2020-09-25 12:14:06,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:14:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:14:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:14:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:14:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:06,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:06,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:06,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:06,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:14:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 12:14:06,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 12:14:06,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:14:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:14:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 12:14:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:06,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:06,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 12:14:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:06,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:06,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:06,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-25 12:14:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:14:06,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:06,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:14:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:14:06,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675487863] [2020-09-25 12:14:06,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:06,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:14:06,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790924898] [2020-09-25 12:14:06,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:14:06,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:06,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:14:06,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:14:06,962 INFO L87 Difference]: Start difference. First operand 294 states and 371 transitions. Second operand 12 states. [2020-09-25 12:14:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:07,738 INFO L93 Difference]: Finished difference Result 566 states and 771 transitions. [2020-09-25 12:14:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:14:07,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-09-25 12:14:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:07,742 INFO L225 Difference]: With dead ends: 566 [2020-09-25 12:14:07,743 INFO L226 Difference]: Without dead ends: 356 [2020-09-25 12:14:07,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:14:07,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-09-25 12:14:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 294. [2020-09-25 12:14:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-09-25 12:14:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 369 transitions. [2020-09-25 12:14:07,775 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 369 transitions. Word has length 147 [2020-09-25 12:14:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:07,775 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 369 transitions. [2020-09-25 12:14:07,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:14:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 369 transitions. [2020-09-25 12:14:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:14:07,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:07,780 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:07,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 12:14:07,781 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:07,781 INFO L82 PathProgramCache]: Analyzing trace with hash 816345215, now seen corresponding path program 9 times [2020-09-25 12:14:07,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:07,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154605622] [2020-09-25 12:14:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:14:09,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1524 [2020-09-25 12:14:09,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:14:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:14:09,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:09,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:09,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:14:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:09,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:09,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:14:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 12:14:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 12:14:09,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:14:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:14:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 12:14:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:09,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:09,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 12:14:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:09,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:09,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:14:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 12:14:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:14:09,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:14:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 6 proven. 210 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:14:09,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154605622] [2020-09-25 12:14:09,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:09,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:14:09,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822434105] [2020-09-25 12:14:09,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:14:09,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:09,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:14:09,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:14:09,796 INFO L87 Difference]: Start difference. First operand 294 states and 369 transitions. Second operand 13 states. [2020-09-25 12:14:10,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:10,011 INFO L93 Difference]: Finished difference Result 589 states and 803 transitions. [2020-09-25 12:14:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:14:10,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-09-25 12:14:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:10,014 INFO L225 Difference]: With dead ends: 589 [2020-09-25 12:14:10,014 INFO L226 Difference]: Without dead ends: 382 [2020-09-25 12:14:10,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:14:10,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-09-25 12:14:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 304. [2020-09-25 12:14:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-09-25 12:14:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 382 transitions. [2020-09-25 12:14:10,065 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 382 transitions. Word has length 152 [2020-09-25 12:14:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:10,065 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 382 transitions. [2020-09-25 12:14:10,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:14:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 382 transitions. [2020-09-25 12:14:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:14:10,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:10,069 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:10,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 12:14:10,071 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1569454257, now seen corresponding path program 8 times [2020-09-25 12:14:10,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:10,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112574239] [2020-09-25 12:14:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:14:11,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-09-25 12:14:11,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:14:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 12:14:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:11,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:11,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:11,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 12:14:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:14:11,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:11,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:11,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 12:14:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 12:14:12,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 12:14:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 12:14:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0