/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:33:27,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:33:27,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:33:27,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:33:27,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:33:27,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:33:27,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:33:27,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:33:27,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:33:27,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:33:27,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:33:27,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:33:27,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:33:27,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:33:27,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:33:27,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:33:27,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:33:27,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:33:27,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:33:27,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:33:27,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:33:27,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:33:27,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:33:27,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:33:27,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:33:27,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:33:27,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:33:27,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:33:27,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:33:27,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:33:27,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:33:27,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:33:27,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:33:27,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:33:27,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:33:27,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:33:27,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:33:27,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:33:27,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:33:27,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:33:27,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:33:27,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:33:27,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:33:27,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:33:27,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:33:27,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:33:27,433 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:33:27,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:33:27,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:33:27,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:33:27,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:33:27,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:33:27,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:33:27,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:33:27,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:33:27,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:33:27,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:33:27,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:33:27,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:33:27,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:33:27,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:33:27,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:33:27,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:33:27,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:33:27,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:33:27,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:33:27,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:33:27,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:33:27,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:33:27,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:33:27,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:33:27,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:33:27,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:33:27,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:33:27,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:33:27,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:33:27,804 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:33:27,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-10-14 05:33:27,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a7e69992/c5378d1f450a439f830e5bd1d6580680/FLAGca8118138 [2020-10-14 05:33:28,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:33:28,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-10-14 05:33:28,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a7e69992/c5378d1f450a439f830e5bd1d6580680/FLAGca8118138 [2020-10-14 05:33:28,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a7e69992/c5378d1f450a439f830e5bd1d6580680 [2020-10-14 05:33:28,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:33:28,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:33:28,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:28,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:33:28,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:33:28,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:28,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28, skipping insertion in model container [2020-10-14 05:33:28,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:28,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:33:28,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:33:28,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:28,960 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:33:28,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:33:28,998 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:33:28,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28 WrapperNode [2020-10-14 05:33:28,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:33:29,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:33:29,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:33:29,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:33:29,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:29,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:29,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:29,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:29,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:29,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:29,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... [2020-10-14 05:33:29,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:33:29,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:33:29,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:33:29,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:33:29,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:33:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:33:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:33:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:33:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:33:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:33:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:33:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:33:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:33:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:33:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:33:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:33:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:33:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:33:29,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:33:29,457 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:33:29,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:29 BoogieIcfgContainer [2020-10-14 05:33:29,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:33:29,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:33:29,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:33:29,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:33:29,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:33:28" (1/3) ... [2020-10-14 05:33:29,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e630a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:29, skipping insertion in model container [2020-10-14 05:33:29,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:33:28" (2/3) ... [2020-10-14 05:33:29,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e630a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:33:29, skipping insertion in model container [2020-10-14 05:33:29,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:33:29" (3/3) ... [2020-10-14 05:33:29,471 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-10-14 05:33:29,493 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:33:29,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:33:29,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:33:29,585 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:33:29,585 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:33:29,585 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:33:29,585 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:33:29,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:33:29,586 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:33:29,586 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:33:29,586 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:33:29,603 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 05:33:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 05:33:29,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:29,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:29,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:29,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:29,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-10-14 05:33:29,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:29,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492648283] [2020-10-14 05:33:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:30,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:33:30,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-14 05:33:30,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:30,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:33:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:33:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:33:30,672 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2020-10-14 05:33:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:30,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:30,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:30,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:30,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:30,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:33:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:30,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492648283] [2020-10-14 05:33:30,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:33:30,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 05:33:30,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814558269] [2020-10-14 05:33:30,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:33:30,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:30,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:33:30,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:33:30,782 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-10-14 05:33:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:33,372 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-10-14 05:33:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:33:33,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-14 05:33:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:33,386 INFO L225 Difference]: With dead ends: 68 [2020-10-14 05:33:33,387 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 05:33:33,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:33:33,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 05:33:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-14 05:33:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 05:33:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-14 05:33:33,430 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2020-10-14 05:33:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:33,430 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-14 05:33:33,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:33:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-14 05:33:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:33:33,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:33,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:33,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:33:33,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1990755954, now seen corresponding path program 1 times [2020-10-14 05:33:33,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:33,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414748044] [2020-10-14 05:33:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:34,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:33:34,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:33:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-14 05:33:34,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:34,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:33:34,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:34,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:34,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:34,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:34,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:34,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:34,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:34,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:33:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:34,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:34,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:34,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:33:34,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:34,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:34,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:34,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414748044] [2020-10-14 05:33:34,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:34,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:34,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693864342] [2020-10-14 05:33:34,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:34,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:34,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:34,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:34,570 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 5 states. [2020-10-14 05:33:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:34,809 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2020-10-14 05:33:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:34,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 05:33:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:34,812 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:33:34,812 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:33:34,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:33:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-10-14 05:33:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 05:33:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-14 05:33:34,822 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 22 [2020-10-14 05:33:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:34,822 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-14 05:33:34,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-14 05:33:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 05:33:34,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:34,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:34,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:33:34,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:34,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1643040600, now seen corresponding path program 1 times [2020-10-14 05:33:34,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:34,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762570263] [2020-10-14 05:33:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:36,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:36,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:33:36,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1970 [2020-10-14 05:33:36,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:36,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:33:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:36,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:36,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:36,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:36,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:36,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:36,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:36,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:33:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:36,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:36,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:36,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:36,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:33:36,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:36,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:36,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762570263] [2020-10-14 05:33:36,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:36,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:36,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079508157] [2020-10-14 05:33:36,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:36,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:36,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:36,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:36,982 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2020-10-14 05:33:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:37,203 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2020-10-14 05:33:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:37,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-14 05:33:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:37,205 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:33:37,206 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:33:37,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:33:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-14 05:33:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:33:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-14 05:33:37,215 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 23 [2020-10-14 05:33:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:37,215 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-14 05:33:37,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-14 05:33:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:33:37,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:37,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:37,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:33:37,217 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:37,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1816528973, now seen corresponding path program 1 times [2020-10-14 05:33:37,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:37,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202213386] [2020-10-14 05:33:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14033 [2020-10-14 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:51,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:33:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:33:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:33:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:51,451 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 21 [2020-10-14 05:33:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:51,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:33:51,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:51,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:51,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:33:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:51,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:51,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:51,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:51,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:33:51,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:51,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:33:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:33:51,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202213386] [2020-10-14 05:33:51,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:51,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:33:51,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701165402] [2020-10-14 05:33:51,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:33:51,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:33:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:33:51,493 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 5 states. [2020-10-14 05:33:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:51,722 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2020-10-14 05:33:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:33:51,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-14 05:33:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:51,724 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:33:51,724 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:33:51,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:33:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:33:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-14 05:33:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:33:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-14 05:33:51,742 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 24 [2020-10-14 05:33:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:51,743 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-14 05:33:51,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:33:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-14 05:33:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:33:51,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:51,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:51,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:33:51,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:51,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1832149091, now seen corresponding path program 1 times [2020-10-14 05:33:51,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:51,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423431032] [2020-10-14 05:33:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:51,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:34:09,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18000 [2020-10-14 05:34:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:34:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:34:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:34:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:09,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:34:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:09,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:09,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:09,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:09,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:34:09,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423431032] [2020-10-14 05:34:09,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:09,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:34:09,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368318874] [2020-10-14 05:34:09,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:34:09,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:09,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:34:09,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:34:09,856 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 5 states. [2020-10-14 05:34:10,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:10,022 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2020-10-14 05:34:10,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:34:10,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-14 05:34:10,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:10,024 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:34:10,024 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:34:10,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:34:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:34:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-14 05:34:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 05:34:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-14 05:34:10,032 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 25 [2020-10-14 05:34:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:10,032 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-14 05:34:10,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:34:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-14 05:34:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:34:10,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:10,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:10,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:34:10,034 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:10,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1835448792, now seen corresponding path program 1 times [2020-10-14 05:34:10,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:10,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286775795] [2020-10-14 05:34:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:33,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:33,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:34:33,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23808 [2020-10-14 05:34:33,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:33,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:34:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:34:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:34:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:34,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:34,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:34:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:34,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:34,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:34:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:34,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:34,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:34,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:34,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:34:34,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:34,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:34:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:34:34,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286775795] [2020-10-14 05:34:34,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:34,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:34:34,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149102228] [2020-10-14 05:34:34,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:34:34,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:34,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:34:34,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:34:34,037 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2020-10-14 05:34:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:36,341 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-14 05:34:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:34:36,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-14 05:34:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:36,343 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:34:36,343 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:34:36,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:34:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:34:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-14 05:34:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 05:34:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-14 05:34:36,351 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 26 [2020-10-14 05:34:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:36,351 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-14 05:34:36,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:34:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-14 05:34:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:34:36,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:36,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:36,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:34:36,353 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:36,353 INFO L82 PathProgramCache]: Analyzing trace with hash 576279582, now seen corresponding path program 1 times [2020-10-14 05:34:36,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:36,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281780255] [2020-10-14 05:34:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:10,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:10,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:35:10,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:35:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34042 [2020-10-14 05:35:10,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:10,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:35:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:35:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:35:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:10,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:10,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:10,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:10,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:10,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:10,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:10,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:35:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:10,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:10,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:35:10,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:10,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:35:10,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281780255] [2020-10-14 05:35:10,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:10,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:35:10,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830319155] [2020-10-14 05:35:10,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:35:10,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:10,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:35:10,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:35:10,506 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-10-14 05:35:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:10,660 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2020-10-14 05:35:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:35:10,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-14 05:35:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:10,662 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:35:10,662 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:35:10,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:35:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:35:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 05:35:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 05:35:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-14 05:35:10,670 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 27 [2020-10-14 05:35:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:10,671 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-14 05:35:10,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:35:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-14 05:35:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 05:35:10,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:10,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:10,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:35:10,672 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-10-14 05:35:10,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:10,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182558775] [2020-10-14 05:35:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:35:24,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:35:24,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13668 [2020-10-14 05:35:24,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:35:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:35:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:35:24,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:35:24,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:24,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:24,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:35:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:24,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:35:24,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:35:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:24,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:24,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:35:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:35:24,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182558775] [2020-10-14 05:35:24,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:24,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:35:24,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660010360] [2020-10-14 05:35:24,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:35:24,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:24,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:35:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:35:24,541 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 8 states. [2020-10-14 05:35:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:26,810 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-10-14 05:35:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:35:26,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-14 05:35:26,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:26,811 INFO L225 Difference]: With dead ends: 37 [2020-10-14 05:35:26,811 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:35:26,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:35:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:35:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:35:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:35:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:35:26,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-14 05:35:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:26,813 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:35:26,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:35:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:35:26,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:35:26,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:35:26,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:35:26,930 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:35:26,931 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-14 05:35:26,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:35:26,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:35:26,931 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:35:26,931 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:35:26,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:35:26,931 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:35:26,932 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 05:35:26,932 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:35:26,932 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 05:35:26,932 INFO L268 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-10-14 05:35:26,932 INFO L268 CegarLoopResult]: For program point L29(lines 29 34) no Hoare annotation was computed. [2020-10-14 05:35:26,932 INFO L268 CegarLoopResult]: For program point L31-2(lines 21 34) no Hoare annotation was computed. [2020-10-14 05:35:26,932 INFO L268 CegarLoopResult]: For program point L27(lines 27 34) no Hoare annotation was computed. [2020-10-14 05:35:26,933 INFO L268 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-10-14 05:35:26,933 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 39) no Hoare annotation was computed. [2020-10-14 05:35:26,933 INFO L268 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-10-14 05:35:26,934 INFO L268 CegarLoopResult]: For program point L21(lines 21 34) no Hoare annotation was computed. [2020-10-14 05:35:26,935 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 37) no Hoare annotation was computed. [2020-10-14 05:35:26,935 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 39) no Hoare annotation was computed. [2020-10-14 05:35:26,935 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-14 05:35:26,935 INFO L264 CegarLoopResult]: At program point L36-1(lines 19 37) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) [2020-10-14 05:35:26,935 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 39) the Hoare annotation is: true [2020-10-14 05:35:26,935 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-14 05:35:26,936 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 05:35:26,936 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:35:26,936 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 05:35:26,936 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 05:35:26,936 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 05:35:26,936 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 05:35:26,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:35:26 BoogieIcfgContainer [2020-10-14 05:35:26,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:35:26,982 INFO L168 Benchmark]: Toolchain (without parser) took 118246.75 ms. Allocated memory was 145.2 MB in the beginning and 863.5 MB in the end (delta: 718.3 MB). Free memory was 102.0 MB in the beginning and 291.8 MB in the end (delta: -189.8 MB). Peak memory consumption was 528.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:26,986 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 05:35:26,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.93 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 91.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:26,989 INFO L168 Benchmark]: Boogie Preprocessor took 121.76 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 91.6 MB in the beginning and 178.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:26,993 INFO L168 Benchmark]: RCFGBuilder took 339.01 ms. Allocated memory is still 200.3 MB. Free memory was 178.8 MB in the beginning and 162.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:26,994 INFO L168 Benchmark]: TraceAbstraction took 117514.48 ms. Allocated memory was 200.3 MB in the beginning and 863.5 MB in the end (delta: 663.2 MB). Free memory was 161.6 MB in the beginning and 291.8 MB in the end (delta: -130.2 MB). Peak memory consumption was 533.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:27,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.93 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 91.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.76 ms. Allocated memory was 145.2 MB in the beginning and 200.3 MB in the end (delta: 55.1 MB). Free memory was 91.6 MB in the beginning and 178.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.01 ms. Allocated memory is still 200.3 MB. Free memory was 178.8 MB in the beginning and 162.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 117514.48 ms. Allocated memory was 200.3 MB in the beginning and 863.5 MB in the end (delta: 663.2 MB). Free memory was 161.6 MB in the beginning and 291.8 MB in the end (delta: -130.2 MB). Peak memory consumption was 533.0 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: 19]: Loop Invariant Derived loop invariant: l <= i + j + k + v1 + v2 + v3 + v4 && i + j + k + v1 + v2 + v3 + v4 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 117.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 315 SDslu, 157 SDs, 0 SdLazy, 604 SolverSat, 70 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 28 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 20 NumberOfFragments, 49 HoareAnnotationTreeSize, 15 FomulaSimplifications, 700 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 108.5s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 42399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 29/42 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...