/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:48:33,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:48:33,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:48:33,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:48:33,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:48:33,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:48:33,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:48:33,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:48:33,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:48:33,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:48:33,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:48:33,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:48:33,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:48:33,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:48:33,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:48:33,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:48:33,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:48:33,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:48:33,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:48:33,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:48:34,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:48:34,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:48:34,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:48:34,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:48:34,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:48:34,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:48:34,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:48:34,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:48:34,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:48:34,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:48:34,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:48:34,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:48:34,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:48:34,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:48:34,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:48:34,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:48:34,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:48:34,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:48:34,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:48:34,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:48:34,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:48:34,022 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 14:48:34,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:48:34,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:48:34,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:48:34,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:48:34,052 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:48:34,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:48:34,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:48:34,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:48:34,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:48:34,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:48:34,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:48:34,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:48:34,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:48:34,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:48:34,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:48:34,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:48:34,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:48:34,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:48:34,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:48:34,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:48:34,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:48:34,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:48:34,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:48:34,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:48:34,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:48:34,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:48:34,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:48:34,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:48:34,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:48:34,057 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:48:34,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:48:34,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:48:34,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:48:34,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:48:34,559 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:48:34,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-25 14:48:34,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e597e10e7/8a63dc0ff6de4ed7ad8497b10d3f698e/FLAGc0164830d [2020-09-25 14:48:35,268 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:48:35,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-25 14:48:35,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e597e10e7/8a63dc0ff6de4ed7ad8497b10d3f698e/FLAGc0164830d [2020-09-25 14:48:35,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e597e10e7/8a63dc0ff6de4ed7ad8497b10d3f698e [2020-09-25 14:48:35,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:48:35,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:48:35,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:48:35,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:48:35,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:48:35,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:48:35" (1/1) ... [2020-09-25 14:48:35,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bde279d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:35, skipping insertion in model container [2020-09-25 14:48:35,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:48:35" (1/1) ... [2020-09-25 14:48:35,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:48:35,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:48:35,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:48:36,005 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:48:36,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:48:36,099 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:48:36,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36 WrapperNode [2020-09-25 14:48:36,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:48:36,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:48:36,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:48:36,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:48:36,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (1/1) ... [2020-09-25 14:48:36,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (1/1) ... [2020-09-25 14:48:36,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (1/1) ... [2020-09-25 14:48:36,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (1/1) ... [2020-09-25 14:48:36,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (1/1) ... [2020-09-25 14:48:36,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (1/1) ... [2020-09-25 14:48:36,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (1/1) ... [2020-09-25 14:48:36,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:48:36,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:48:36,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:48:36,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:48:36,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (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 14:48:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:48:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:48:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:48:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:48:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-25 14:48:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-25 14:48:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:48:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:48:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:48:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:48:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:48:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 14:48:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:48:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:48:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:48:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:48:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:48:37,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:48:37,200 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:48:37,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:48:37 BoogieIcfgContainer [2020-09-25 14:48:37,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:48:37,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:48:37,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:48:37,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:48:37,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:48:35" (1/3) ... [2020-09-25 14:48:37,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2757f198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:48:37, skipping insertion in model container [2020-09-25 14:48:37,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:48:36" (2/3) ... [2020-09-25 14:48:37,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2757f198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:48:37, skipping insertion in model container [2020-09-25 14:48:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:48:37" (3/3) ... [2020-09-25 14:48:37,227 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-09-25 14:48:37,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:48:37,251 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:48:37,274 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:48:37,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:48:37,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:48:37,311 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:48:37,311 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:48:37,311 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:48:37,311 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:48:37,311 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:48:37,311 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:48:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-09-25 14:48:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-25 14:48:37,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:37,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:37,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:37,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1683722235, now seen corresponding path program 1 times [2020-09-25 14:48:37,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:37,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13258175] [2020-09-25 14:48:37,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:38,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:38,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-09-25 14:48:38,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-09-25 14:48:38,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:38,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:48:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 14:48:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:48:38,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:38,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:38,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:48:38,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:48:38,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:38,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:38,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:48:38,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13258175] [2020-09-25 14:48:39,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:39,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:48:39,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508604443] [2020-09-25 14:48:39,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:48:39,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:39,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:48:39,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:48:39,036 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 5 states. [2020-09-25 14:48:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:39,843 INFO L93 Difference]: Finished difference Result 416 states and 424 transitions. [2020-09-25 14:48:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:48:39,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-09-25 14:48:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:39,865 INFO L225 Difference]: With dead ends: 416 [2020-09-25 14:48:39,865 INFO L226 Difference]: Without dead ends: 349 [2020-09-25 14:48:39,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:48:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-25 14:48:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 335. [2020-09-25 14:48:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-25 14:48:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2020-09-25 14:48:39,945 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 317 [2020-09-25 14:48:39,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:39,947 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2020-09-25 14:48:39,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:48:39,948 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2020-09-25 14:48:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-09-25 14:48:39,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:39,956 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:39,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:48:39,956 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:39,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:39,959 INFO L82 PathProgramCache]: Analyzing trace with hash 346805738, now seen corresponding path program 1 times [2020-09-25 14:48:39,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:39,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425270964] [2020-09-25 14:48:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:42,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:42,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-09-25 14:48:42,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2565 [2020-09-25 14:48:42,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:42,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:48:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 14:48:42,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:48:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:48:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:42,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:42,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:48:42,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:48:42,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:42,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:42,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:48:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:48:43,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425270964] [2020-09-25 14:48:43,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:43,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:48:43,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032236862] [2020-09-25 14:48:43,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:48:43,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:43,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:48:43,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:48:43,034 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 6 states. [2020-09-25 14:48:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:43,946 INFO L93 Difference]: Finished difference Result 374 states and 374 transitions. [2020-09-25 14:48:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:48:43,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-09-25 14:48:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:43,950 INFO L225 Difference]: With dead ends: 374 [2020-09-25 14:48:43,951 INFO L226 Difference]: Without dead ends: 366 [2020-09-25 14:48:43,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:48:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-25 14:48:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 352. [2020-09-25 14:48:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-09-25 14:48:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2020-09-25 14:48:43,972 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 334 [2020-09-25 14:48:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:43,972 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2020-09-25 14:48:43,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:48:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2020-09-25 14:48:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-09-25 14:48:43,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:43,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:43,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:48:43,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:43,981 INFO L82 PathProgramCache]: Analyzing trace with hash -461354021, now seen corresponding path program 2 times [2020-09-25 14:48:43,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:43,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080104511] [2020-09-25 14:48:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:49,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-09-25 14:48:49,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:48:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-09-25 14:48:49,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:49,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:48:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 14:48:49,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:48:49,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:49,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:49,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:48:49,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:48:49,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:49,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:48:49,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080104511] [2020-09-25 14:48:49,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:49,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:48:49,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64102541] [2020-09-25 14:48:49,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:48:49,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:49,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:48:49,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:48:49,455 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 7 states. [2020-09-25 14:48:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:50,485 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2020-09-25 14:48:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:48:50,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-09-25 14:48:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:50,491 INFO L225 Difference]: With dead ends: 391 [2020-09-25 14:48:50,492 INFO L226 Difference]: Without dead ends: 383 [2020-09-25 14:48:50,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-25 14:48:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 369. [2020-09-25 14:48:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-09-25 14:48:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2020-09-25 14:48:50,532 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 351 [2020-09-25 14:48:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:50,535 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2020-09-25 14:48:50,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:48:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2020-09-25 14:48:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-25 14:48:50,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:50,550 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:50,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:48:50,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:50,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:50,552 INFO L82 PathProgramCache]: Analyzing trace with hash -254126582, now seen corresponding path program 3 times [2020-09-25 14:48:50,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:50,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199838904] [2020-09-25 14:48:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:56,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:56,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-09-25 14:48:56,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:48:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5751 [2020-09-25 14:48:56,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:56,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:48:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 14:48:56,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:48:56,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:56,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:56,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:48:56,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:48:56,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:56,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:56,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:48:56,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199838904] [2020-09-25 14:48:56,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:56,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:48:56,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315308187] [2020-09-25 14:48:56,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:48:56,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:56,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:48:56,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:48:56,828 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 8 states. [2020-09-25 14:48:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:57,764 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2020-09-25 14:48:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:48:57,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-09-25 14:48:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:57,768 INFO L225 Difference]: With dead ends: 408 [2020-09-25 14:48:57,768 INFO L226 Difference]: Without dead ends: 400 [2020-09-25 14:48:57,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:48:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-09-25 14:48:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 386. [2020-09-25 14:48:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-25 14:48:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2020-09-25 14:48:57,782 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 368 [2020-09-25 14:48:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:57,783 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2020-09-25 14:48:57,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:48:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2020-09-25 14:48:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-25 14:48:57,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:57,791 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:57,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:48:57,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1386344517, now seen corresponding path program 4 times [2020-09-25 14:48:57,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:57,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323619512] [2020-09-25 14:48:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:03,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-09-25 14:49:03,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:49:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5720 [2020-09-25 14:49:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:03,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:49:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 14:49:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:49:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:03,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:49:03,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:49:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:03,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:49:03,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323619512] [2020-09-25 14:49:03,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:49:03,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:49:03,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529399999] [2020-09-25 14:49:03,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:49:03,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:03,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:49:03,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:49:03,983 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 9 states. [2020-09-25 14:49:05,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:05,018 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2020-09-25 14:49:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:49:05,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 385 [2020-09-25 14:49:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:05,021 INFO L225 Difference]: With dead ends: 425 [2020-09-25 14:49:05,021 INFO L226 Difference]: Without dead ends: 417 [2020-09-25 14:49:05,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:49:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-25 14:49:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 403. [2020-09-25 14:49:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-25 14:49:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2020-09-25 14:49:05,032 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 385 [2020-09-25 14:49:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:05,032 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2020-09-25 14:49:05,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:49:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2020-09-25 14:49:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-09-25 14:49:05,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:05,036 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:05,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:49:05,036 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:05,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2088816170, now seen corresponding path program 5 times [2020-09-25 14:49:05,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:05,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721528697] [2020-09-25 14:49:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:05,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:10,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:10,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-09-25 14:49:10,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:49:10,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5471 [2020-09-25 14:49:10,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:10,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:49:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 14:49:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:49:10,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:10,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:49:10,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:49:10,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:10,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:49:11,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721528697] [2020-09-25 14:49:11,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:49:11,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:49:11,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613776512] [2020-09-25 14:49:11,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:49:11,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:11,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:49:11,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:49:11,110 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 10 states. [2020-09-25 14:49:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:12,222 INFO L93 Difference]: Finished difference Result 442 states and 442 transitions. [2020-09-25 14:49:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:49:12,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 402 [2020-09-25 14:49:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:12,226 INFO L225 Difference]: With dead ends: 442 [2020-09-25 14:49:12,226 INFO L226 Difference]: Without dead ends: 434 [2020-09-25 14:49:12,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:49:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-09-25 14:49:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 420. [2020-09-25 14:49:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-09-25 14:49:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2020-09-25 14:49:12,237 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 402 [2020-09-25 14:49:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:12,238 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2020-09-25 14:49:12,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:49:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2020-09-25 14:49:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-25 14:49:12,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:12,241 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:12,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:49:12,241 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:12,242 INFO L82 PathProgramCache]: Analyzing trace with hash 380820379, now seen corresponding path program 6 times [2020-09-25 14:49:12,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:12,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280012043] [2020-09-25 14:49:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:17,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:17,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-09-25 14:49:17,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:49:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 14:49:17,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:17,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:49:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-25 14:49:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:49:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:17,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:49:17,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:49:17,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:17,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:49:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:49:17,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280012043] [2020-09-25 14:49:17,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:49:17,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:49:17,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838436901] [2020-09-25 14:49:17,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:49:17,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:17,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:49:17,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:49:17,740 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 11 states. [2020-09-25 14:49:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:19,192 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-09-25 14:49:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:49:19,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 419 [2020-09-25 14:49:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:19,197 INFO L225 Difference]: With dead ends: 459 [2020-09-25 14:49:19,197 INFO L226 Difference]: Without dead ends: 451 [2020-09-25 14:49:19,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:49:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-25 14:49:19,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 437. [2020-09-25 14:49:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-25 14:49:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-09-25 14:49:19,209 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 419 [2020-09-25 14:49:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:19,210 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-09-25 14:49:19,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:49:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-09-25 14:49:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-09-25 14:49:19,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:19,213 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:19,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:49:19,214 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:19,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:19,214 INFO L82 PathProgramCache]: Analyzing trace with hash 329334346, now seen corresponding path program 7 times [2020-09-25 14:49:19,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:19,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525373396] [2020-09-25 14:49:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking...