/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:03:04,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:03:04,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:03:04,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:03:04,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:03:04,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:03:04,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:03:04,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:03:04,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:03:04,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:03:04,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:03:04,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:03:04,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:03:04,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:03:04,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:03:04,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:03:04,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:03:04,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:03:04,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:03:04,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:03:04,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:03:04,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:03:04,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:03:04,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:03:04,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:03:04,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:03:04,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:03:04,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:03:04,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:03:04,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:03:04,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:03:04,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:03:04,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:03:04,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:03:04,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:03:04,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:03:04,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:03:04,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:03:04,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:03:04,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:03:04,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:03:04,198 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 08:03:04,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:03:04,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:03:04,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:03:04,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:03:04,246 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:03:04,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:03:04,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:03:04,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:03:04,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:03:04,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:03:04,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:03:04,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:03:04,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:03:04,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:03:04,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:03:04,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:03:04,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:03:04,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:03:04,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:03:04,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:03:04,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:03:04,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:03:04,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:03:04,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:03:04,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:03:04,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:03:04,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:03:04,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:03:04,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:03:04,253 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:03:04,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:03:04,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:03:04,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:03:04,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:03:04,739 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:03:04,740 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-25 08:03:04,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b331e0298/20cccebfa25f4584b33eccb94c92b4d7/FLAG828609fd1 [2020-09-25 08:03:05,378 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:03:05,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-25 08:03:05,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b331e0298/20cccebfa25f4584b33eccb94c92b4d7/FLAG828609fd1 [2020-09-25 08:03:05,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b331e0298/20cccebfa25f4584b33eccb94c92b4d7 [2020-09-25 08:03:05,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:03:05,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:03:05,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:03:05,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:03:05,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:03:05,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:05" (1/1) ... [2020-09-25 08:03:05,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62030c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:05, skipping insertion in model container [2020-09-25 08:03:05,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:05" (1/1) ... [2020-09-25 08:03:05,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:03:05,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:03:05,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:03:06,001 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:03:06,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:03:06,031 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:03:06,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06 WrapperNode [2020-09-25 08:03:06,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:03:06,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:03:06,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:03:06,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:03:06,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ... [2020-09-25 08:03:06,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ... [2020-09-25 08:03:06,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ... [2020-09-25 08:03:06,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ... [2020-09-25 08:03:06,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ... [2020-09-25 08:03:06,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ... [2020-09-25 08:03:06,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ... [2020-09-25 08:03:06,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:03:06,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:03:06,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:03:06,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:03:06,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (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 08:03:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:03:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:03:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:03:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:03:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:03:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:03:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:03:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:03:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:03:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:03:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:03:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:03:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:03:06,441 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:03:06,442 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:03:06,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:06 BoogieIcfgContainer [2020-09-25 08:03:06,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:03:06,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:03:06,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:03:06,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:03:06,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:03:05" (1/3) ... [2020-09-25 08:03:06,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af8ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:06, skipping insertion in model container [2020-09-25 08:03:06,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (2/3) ... [2020-09-25 08:03:06,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af8ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:06, skipping insertion in model container [2020-09-25 08:03:06,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:06" (3/3) ... [2020-09-25 08:03:06,469 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-09-25 08:03:06,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:03:06,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:03:06,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:03:06,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:03:06,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:03:06,569 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:03:06,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:03:06,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:03:06,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:03:06,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:03:06,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:03:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 08:03:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 08:03:06,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:06,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:06,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:06,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-09-25 08:03:06,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:06,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903093241] [2020-09-25 08:03:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:06,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 08:03:06,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 08:03:06,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:06,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:06,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:03:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:06,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:06,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:06,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:06,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:03:06,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:06,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:06,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:06,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:06,923 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 08:03:06,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903093241] [2020-09-25 08:03:06,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:03:06,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:03:06,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662019005] [2020-09-25 08:03:06,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:03:06,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:06,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:03:06,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:03:06,960 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-09-25 08:03:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:07,063 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-09-25 08:03:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:03:07,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-25 08:03:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:07,074 INFO L225 Difference]: With dead ends: 46 [2020-09-25 08:03:07,075 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 08:03:07,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:03:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 08:03:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-09-25 08:03:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 08:03:07,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-25 08:03:07,126 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-09-25 08:03:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:07,126 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-25 08:03:07,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:03:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-25 08:03:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 08:03:07,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:07,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:07,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:03:07,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-09-25 08:03:07,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:07,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769057960] [2020-09-25 08:03:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:03:07,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:03:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 08:03:07,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:07,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:03:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:03:07,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:07,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:07,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:07,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:07,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:07,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:07,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:07,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:07,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:03:07,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:07,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:03:07,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769057960] [2020-09-25 08:03:07,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:07,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:03:07,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073982959] [2020-09-25 08:03:07,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:03:07,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:07,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:03:07,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:03:07,515 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-09-25 08:03:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:07,624 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-25 08:03:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:03:07,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 08:03:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:07,626 INFO L225 Difference]: With dead ends: 36 [2020-09-25 08:03:07,626 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 08:03:07,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:03:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 08:03:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 08:03:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 08:03:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 08:03:07,636 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-09-25 08:03:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:07,636 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 08:03:07,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:03:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 08:03:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 08:03:07,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:07,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:07,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:03:07,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:07,639 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-09-25 08:03:07,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:07,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737120629] [2020-09-25 08:03:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:08,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 08:03:08,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:03:08,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-09-25 08:03:08,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:08,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:03:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:03:08,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:08,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:08,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:08,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:08,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:08,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:08,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:08,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:08,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:08,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:08,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:08,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:08,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:03:08,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:08,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:03:08,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737120629] [2020-09-25 08:03:08,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:08,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:03:08,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628886745] [2020-09-25 08:03:08,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:03:08,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:08,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:03:08,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:03:08,681 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-09-25 08:03:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:08,825 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-09-25 08:03:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:03:08,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-09-25 08:03:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:08,828 INFO L225 Difference]: With dead ends: 45 [2020-09-25 08:03:08,828 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 08:03:08,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:03:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 08:03:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-25 08:03:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 08:03:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 08:03:08,838 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-09-25 08:03:08,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:08,839 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 08:03:08,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:03:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 08:03:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:03:08,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:08,841 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:08,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:03:08,841 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:08,842 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-09-25 08:03:08,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:08,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949320276] [2020-09-25 08:03:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:12,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:03:12,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:03:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4006 [2020-09-25 08:03:12,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:12,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:03:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 08:03:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:12,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:12,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:12,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:12,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:12,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:12,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:12,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:12,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:12,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:12,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:12,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:12,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:12,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:12,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 08:03:13,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949320276] [2020-09-25 08:03:13,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:13,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:03:13,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984048059] [2020-09-25 08:03:13,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:03:13,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:03:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:03:13,005 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-09-25 08:03:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:13,193 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 08:03:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:03:13,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-25 08:03:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:13,195 INFO L225 Difference]: With dead ends: 54 [2020-09-25 08:03:13,196 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 08:03:13,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:03:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 08:03:13,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 08:03:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:03:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-25 08:03:13,207 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-09-25 08:03:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:13,207 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-25 08:03:13,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:03:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-25 08:03:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 08:03:13,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:13,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:13,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:03:13,210 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:13,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-09-25 08:03:13,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:13,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952225310] [2020-09-25 08:03:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 08:03:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:03:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:03:18,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:18,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:03:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:03:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:18,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:18,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:18,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:18,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:18,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:03:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:18,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:18,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:18,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:03:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:18,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:18,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:18,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:18,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:18,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:18,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:18,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:18,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:18,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:18,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 08:03:18,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952225310] [2020-09-25 08:03:18,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:18,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 08:03:18,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168034148] [2020-09-25 08:03:18,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:03:18,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:03:18,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:03:18,432 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-09-25 08:03:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:18,699 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-09-25 08:03:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:03:18,699 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-09-25 08:03:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:18,701 INFO L225 Difference]: With dead ends: 63 [2020-09-25 08:03:18,701 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 08:03:18,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:03:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 08:03:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-09-25 08:03:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 08:03:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-25 08:03:18,719 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-09-25 08:03:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:18,720 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-25 08:03:18,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:03:18,720 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-25 08:03:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 08:03:18,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:18,725 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:18,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:03:18,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:18,726 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-09-25 08:03:18,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:18,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849193213] [2020-09-25 08:03:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:23,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:23,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 08:03:23,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:03:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 08:03:23,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:23,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:03:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 08:03:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:23,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:03:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:23,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:03:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:24,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:03:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:24,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:24,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:24,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:24,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:24,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:24,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:24,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:24,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:24,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:24,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:24,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:24,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:24,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:24,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:24,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:03:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:24,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:03:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:24,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:24,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:24,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:24,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 08:03:24,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849193213] [2020-09-25 08:03:24,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:24,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:03:24,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311677368] [2020-09-25 08:03:24,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:03:24,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:03:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:03:24,109 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-09-25 08:03:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:24,509 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-25 08:03:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:03:24,510 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 08:03:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:24,512 INFO L225 Difference]: With dead ends: 72 [2020-09-25 08:03:24,512 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 08:03:24,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-09-25 08:03:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 08:03:24,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-25 08:03:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 08:03:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-09-25 08:03:24,532 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-09-25 08:03:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:24,532 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-09-25 08:03:24,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:03:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-09-25 08:03:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 08:03:24,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:24,536 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:24,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:03:24,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:24,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-09-25 08:03:24,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:24,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501105235] [2020-09-25 08:03:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:25,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 08:03:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:03:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 08:03:29,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:03:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 08:03:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:29,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:29,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:29,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:29,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:29,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:29,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:29,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:29,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:29,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:03:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:29,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:29,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:03:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:29,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:29,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:29,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:29,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:29,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 08:03:29,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501105235] [2020-09-25 08:03:29,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:29,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 08:03:30,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979852167] [2020-09-25 08:03:30,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:03:30,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:30,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:03:30,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:03:30,004 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-09-25 08:03:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:30,571 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-09-25 08:03:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 08:03:30,572 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-09-25 08:03:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:30,575 INFO L225 Difference]: With dead ends: 81 [2020-09-25 08:03:30,580 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 08:03:30,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-09-25 08:03:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 08:03:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-09-25 08:03:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 08:03:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-09-25 08:03:30,600 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-09-25 08:03:30,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:30,604 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-09-25 08:03:30,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:03:30,604 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-09-25 08:03:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 08:03:30,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:30,608 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:30,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:03:30,609 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:30,609 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-09-25 08:03:30,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:30,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261811965] [2020-09-25 08:03:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 08:03:35,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:03:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:03:35,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 08:03:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 08:03:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:35,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:35,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:35,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:35,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:35,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:35,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:35,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:35,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:35,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:35,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:03:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:35,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:35,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:03:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:35,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:35,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:35,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 08:03:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:35,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:35,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:35,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:35,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:35,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:35,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 14 proven. 119 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 08:03:35,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261811965] [2020-09-25 08:03:35,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:35,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 08:03:35,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966200879] [2020-09-25 08:03:35,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 08:03:35,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:35,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 08:03:35,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:03:35,951 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-09-25 08:03:36,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:36,328 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-09-25 08:03:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 08:03:36,328 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-09-25 08:03:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:36,330 INFO L225 Difference]: With dead ends: 90 [2020-09-25 08:03:36,330 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 08:03:36,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 08:03:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 08:03:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-25 08:03:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 08:03:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-09-25 08:03:36,350 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-09-25 08:03:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:36,350 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-09-25 08:03:36,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 08:03:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-09-25 08:03:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 08:03:36,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:36,354 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:36,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:03:36,354 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:36,354 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-09-25 08:03:36,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:36,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718573329] [2020-09-25 08:03:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:03:41,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:03:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:03:41,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 08:03:41,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 08:03:41,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 08:03:41,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:41,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:41,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:41,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:41,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:41,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:41,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:03:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:41,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:03:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:41,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 08:03:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:41,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:03:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:41,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:41,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:41,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:41,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:41,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 156 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 08:03:41,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718573329] [2020-09-25 08:03:41,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:41,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 08:03:41,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726919497] [2020-09-25 08:03:41,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 08:03:41,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:41,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 08:03:41,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:03:41,803 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-09-25 08:03:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:42,248 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-09-25 08:03:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 08:03:42,248 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-09-25 08:03:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:42,250 INFO L225 Difference]: With dead ends: 99 [2020-09-25 08:03:42,250 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 08:03:42,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 08:03:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 08:03:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-25 08:03:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 08:03:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-09-25 08:03:42,266 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-09-25 08:03:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:42,266 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-09-25 08:03:42,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 08:03:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-09-25 08:03:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 08:03:42,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:42,268 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:42,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:03:42,269 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-09-25 08:03:42,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:42,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812842854] [2020-09-25 08:03:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 08:03:47,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:03:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:03:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:03:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 08:03:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 08:03:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:47,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:47,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:03:47,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 08:03:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:03:47,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:47,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:47,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:03:47,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:03:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:47,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:03:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 08:03:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:47,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 08:03:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:47,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 08:03:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:47,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 08:03:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:47,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:47,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:47,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:47,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:47,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 142 proven. 18 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-09-25 08:03:47,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812842854] [2020-09-25 08:03:47,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:47,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:03:47,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052268545] [2020-09-25 08:03:47,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:03:47,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:47,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:03:47,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:03:47,538 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 9 states. [2020-09-25 08:03:47,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:47,594 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2020-09-25 08:03:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:03:47,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-25 08:03:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:47,596 INFO L225 Difference]: With dead ends: 95 [2020-09-25 08:03:47,596 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 08:03:47,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:03:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 08:03:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 08:03:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 08:03:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 08:03:47,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2020-09-25 08:03:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:47,599 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 08:03:47,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:03:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 08:03:47,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 08:03:47,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:03:47,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 08:03:47,665 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 08:03:47,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:03:47,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:03:47,666 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 08:03:47,666 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 08:03:47,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 08:03:47,666 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:03:47,666 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:03:47,666 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 08:03:47,667 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 08:03:47,667 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:03:47,667 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 19) the Hoare annotation is: true [2020-09-25 08:03:47,667 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 19) no Hoare annotation was computed. [2020-09-25 08:03:47,667 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (<= main_~i~0 999999) [2020-09-25 08:03:47,667 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 08:03:47,668 INFO L268 CegarLoopResult]: For program point L16-1(lines 15 17) no Hoare annotation was computed. [2020-09-25 08:03:47,668 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 19) no Hoare annotation was computed. [2020-09-25 08:03:47,668 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 08:03:47,668 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-25 08:03:47,668 INFO L264 CegarLoopResult]: At program point L15-5(lines 15 17) the Hoare annotation is: (<= main_~i~0 1000000) [2020-09-25 08:03:47,668 INFO L268 CegarLoopResult]: For program point L15-6(lines 15 17) no Hoare annotation was computed. [2020-09-25 08:03:47,668 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 08:03:47,668 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 08:03:47,669 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 08:03:47,669 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 08:03:47,669 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 08:03:47,669 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 08:03:47,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:03:47 BoogieIcfgContainer [2020-09-25 08:03:47,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:03:47,693 INFO L168 Benchmark]: Toolchain (without parser) took 41952.49 ms. Allocated memory was 147.8 MB in the beginning and 380.6 MB in the end (delta: 232.8 MB). Free memory was 103.3 MB in the beginning and 188.5 MB in the end (delta: -85.2 MB). Peak memory consumption was 147.6 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:47,693 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:03:47,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.24 ms. Allocated memory is still 147.8 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:47,695 INFO L168 Benchmark]: Boogie Preprocessor took 33.15 ms. Allocated memory is still 147.8 MB. Free memory was 93.4 MB in the beginning and 91.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:47,696 INFO L168 Benchmark]: RCFGBuilder took 380.98 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 172.3 MB in the end (delta: -80.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:47,697 INFO L168 Benchmark]: TraceAbstraction took 41240.07 ms. Allocated memory was 205.0 MB in the beginning and 380.6 MB in the end (delta: 175.6 MB). Free memory was 171.7 MB in the beginning and 188.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 158.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:47,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.24 ms. Allocated memory is still 147.8 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.15 ms. Allocated memory is still 147.8 MB. Free memory was 93.4 MB in the beginning and 91.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.98 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 172.3 MB in the end (delta: -80.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41240.07 ms. Allocated memory was 205.0 MB in the beginning and 380.6 MB in the end (delta: 175.6 MB). Free memory was 171.7 MB in the beginning and 188.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 158.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41.0s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 122 SDslu, 735 SDs, 0 SdLazy, 862 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 18 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 37 NumberOfFragments, 11 HoareAnnotationTreeSize, 17 FomulaSimplifications, 123 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 37.6s InterpolantComputationTime, 515 NumberOfCodeBlocks, 515 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 505 ConstructedInterpolants, 0 QuantifiedInterpolants, 63848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 750/1260 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...