/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/bitvector/soft_float_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:34:28,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:34:28,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:34:28,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:34:28,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:34:28,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:34:28,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:34:28,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:34:28,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:34:28,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:34:28,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:34:28,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:34:28,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:34:28,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:34:28,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:34:28,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:34:28,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:34:28,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:34:28,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:34:28,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:34:28,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:34:28,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:34:28,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:34:28,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:34:28,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:34:28,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:34:28,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:34:28,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:34:28,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:34:28,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:34:28,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:34:28,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:34:28,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:34:28,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:34:28,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:34:28,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:34:28,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:34:28,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:34:28,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:34:28,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:34:28,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:34:28,722 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 18:34:28,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:34:28,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:34:28,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:34:28,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:34:28,746 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:34:28,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:34:28,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:34:28,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:34:28,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:34:28,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:34:28,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:34:28,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:34:28,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:34:28,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:34:28,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:34:28,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:34:28,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:34:28,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:34:28,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:34:28,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:34:28,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:34:28,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:34:28,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:34:28,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:34:28,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:34:28,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:34:28,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:34:28,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:34:28,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:34:28,752 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:34:29,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:34:29,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:34:29,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:34:29,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:34:29,120 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:34:29,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-14 18:34:29,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e93252c44/8866fe6613644d5da0ec9401962ca145/FLAG01a254f76 [2020-10-14 18:34:29,656 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:34:29,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-14 18:34:29,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e93252c44/8866fe6613644d5da0ec9401962ca145/FLAG01a254f76 [2020-10-14 18:34:30,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e93252c44/8866fe6613644d5da0ec9401962ca145 [2020-10-14 18:34:30,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:34:30,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:34:30,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:30,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:34:30,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:34:30,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8d2598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30, skipping insertion in model container [2020-10-14 18:34:30,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:34:30,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:34:30,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:30,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:34:30,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:34:30,526 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:34:30,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30 WrapperNode [2020-10-14 18:34:30,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:34:30,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:34:30,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:34:30,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:34:30,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (1/1) ... [2020-10-14 18:34:30,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:34:30,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:34:30,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:34:30,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:34:30,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (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 18:34:30,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:34:30,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:34:30,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:34:30,655 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-14 18:34:30,655 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-14 18:34:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-14 18:34:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:34:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:34:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:34:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 18:34:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 18:34:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:34:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-14 18:34:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-14 18:34:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-14 18:34:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:34:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:34:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:34:31,194 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:34:31,194 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:34:31,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:31 BoogieIcfgContainer [2020-10-14 18:34:31,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:34:31,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:34:31,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:34:31,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:34:31,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:34:30" (1/3) ... [2020-10-14 18:34:31,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ce0d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:31, skipping insertion in model container [2020-10-14 18:34:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:34:30" (2/3) ... [2020-10-14 18:34:31,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ce0d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:34:31, skipping insertion in model container [2020-10-14 18:34:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:34:31" (3/3) ... [2020-10-14 18:34:31,210 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-14 18:34:31,220 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:34:31,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:34:31,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:34:31,268 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:34:31,268 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:34:31,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:34:31,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:34:31,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:34:31,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:34:31,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:34:31,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:34:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-14 18:34:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:34:31,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:31,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:31,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:31,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1189805110, now seen corresponding path program 1 times [2020-10-14 18:34:31,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:31,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371249047] [2020-10-14 18:34:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:31,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:36,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:36,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 18:34:36,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:34:36,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:34:36,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:36,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:34:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:34:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:34:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:36,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:36,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:36,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:36,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:36,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:36,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:36,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:36,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:34:36,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:36,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:36,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:36,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:34:36,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:36,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:36,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:36,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:36,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:36,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 18:34:36,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:36,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:36,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:36,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:36,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:36,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:36,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:36,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:34:36,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:36,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:36,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:34:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:36,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371249047] [2020-10-14 18:34:36,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:36,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:34:36,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889523512] [2020-10-14 18:34:36,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:34:36,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:36,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:34:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:34:36,797 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 6 states. [2020-10-14 18:34:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:36,998 INFO L93 Difference]: Finished difference Result 192 states and 314 transitions. [2020-10-14 18:34:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:34:37,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-14 18:34:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:37,024 INFO L225 Difference]: With dead ends: 192 [2020-10-14 18:34:37,024 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 18:34:37,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:34:37,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 18:34:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-10-14 18:34:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 18:34:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 126 transitions. [2020-10-14 18:34:37,141 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 126 transitions. Word has length 36 [2020-10-14 18:34:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:37,143 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 126 transitions. [2020-10-14 18:34:37,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:34:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 126 transitions. [2020-10-14 18:34:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:34:37,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:37,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:37,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:34:37,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1452433878, now seen corresponding path program 1 times [2020-10-14 18:34:37,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:37,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838300556] [2020-10-14 18:34:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:39,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:34:39,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:34:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2114 [2020-10-14 18:34:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:39,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:34:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:34:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:39,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:39,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:39,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:39,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:39,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:39,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:39,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:39,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:39,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:34:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:39,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:39,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:39,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:39,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:39,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:39,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:39,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:39,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838300556] [2020-10-14 18:34:39,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:39,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:34:39,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273626037] [2020-10-14 18:34:39,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:34:39,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:39,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:34:39,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:34:39,513 INFO L87 Difference]: Start difference. First operand 86 states and 126 transitions. Second operand 9 states. [2020-10-14 18:34:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:39,757 INFO L93 Difference]: Finished difference Result 194 states and 290 transitions. [2020-10-14 18:34:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:34:39,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-14 18:34:39,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:39,761 INFO L225 Difference]: With dead ends: 194 [2020-10-14 18:34:39,761 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 18:34:39,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:34:39,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 18:34:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2020-10-14 18:34:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 18:34:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2020-10-14 18:34:39,782 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 40 [2020-10-14 18:34:39,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:39,783 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2020-10-14 18:34:39,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:34:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2020-10-14 18:34:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:34:39,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:39,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:39,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:34:39,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:39,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:39,787 INFO L82 PathProgramCache]: Analyzing trace with hash 922886166, now seen corresponding path program 1 times [2020-10-14 18:34:39,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:39,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986339863] [2020-10-14 18:34:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:42,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:42,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:34:42,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:34:42,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2474 [2020-10-14 18:34:42,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:42,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:34:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:34:42,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:34:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-14 18:34:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:42,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:42,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:42,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:42,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:42,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:42,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:42,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:42,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:34:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:42,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:42,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:42,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:42,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:42,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:42,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:42,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:42,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:34:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:42,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:42,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:42,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:34:42,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:42,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:42,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986339863] [2020-10-14 18:34:42,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:42,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:34:42,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178744389] [2020-10-14 18:34:42,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:34:42,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:42,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:34:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:42,528 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand 10 states. [2020-10-14 18:34:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:42,907 INFO L93 Difference]: Finished difference Result 294 states and 436 transitions. [2020-10-14 18:34:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:34:42,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-14 18:34:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:42,914 INFO L225 Difference]: With dead ends: 294 [2020-10-14 18:34:42,915 INFO L226 Difference]: Without dead ends: 228 [2020-10-14 18:34:42,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:34:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-14 18:34:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 142. [2020-10-14 18:34:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 18:34:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 206 transitions. [2020-10-14 18:34:42,944 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 206 transitions. Word has length 40 [2020-10-14 18:34:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:42,945 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 206 transitions. [2020-10-14 18:34:42,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:34:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 206 transitions. [2020-10-14 18:34:42,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:34:42,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:42,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:42,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:34:42,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:42,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:42,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2130411483, now seen corresponding path program 1 times [2020-10-14 18:34:42,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:42,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104609291] [2020-10-14 18:34:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:34:45,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:34:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2740 [2020-10-14 18:34:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:34:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:34:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:34:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:34:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:45,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:45,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:45,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:45,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:34:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 18:34:45,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:34:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:34:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:34:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 18:34:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:45,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:34:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:45,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:45,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:34:45,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:45,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:34:46,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104609291] [2020-10-14 18:34:46,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:46,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:34:46,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476335756] [2020-10-14 18:34:46,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:34:46,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:46,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:34:46,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:34:46,011 INFO L87 Difference]: Start difference. First operand 142 states and 206 transitions. Second operand 11 states. [2020-10-14 18:34:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:46,835 INFO L93 Difference]: Finished difference Result 302 states and 450 transitions. [2020-10-14 18:34:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:34:46,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 18:34:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:46,841 INFO L225 Difference]: With dead ends: 302 [2020-10-14 18:34:46,841 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 18:34:46,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:34:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 18:34:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 129. [2020-10-14 18:34:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 18:34:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 191 transitions. [2020-10-14 18:34:46,876 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 191 transitions. Word has length 40 [2020-10-14 18:34:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:46,877 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 191 transitions. [2020-10-14 18:34:46,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:34:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 191 transitions. [2020-10-14 18:34:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:34:46,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:46,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:46,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:34:46,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash -122114107, now seen corresponding path program 1 times [2020-10-14 18:34:46,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:46,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32802965] [2020-10-14 18:34:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 18:34:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:34:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-14 18:34:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:34:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:34:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:48,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:34:48,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:48,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:48,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 18:34:48,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:34:48,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:34:48,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:48,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:34:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:34:48,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:48,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32802965] [2020-10-14 18:34:48,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:34:48,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:34:48,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202212978] [2020-10-14 18:34:48,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:34:48,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:48,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:34:48,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:48,239 INFO L87 Difference]: Start difference. First operand 129 states and 191 transitions. Second operand 8 states. [2020-10-14 18:34:48,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:48,544 INFO L93 Difference]: Finished difference Result 276 states and 420 transitions. [2020-10-14 18:34:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:34:48,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 18:34:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:48,550 INFO L225 Difference]: With dead ends: 276 [2020-10-14 18:34:48,550 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 18:34:48,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 18:34:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 204. [2020-10-14 18:34:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-14 18:34:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 306 transitions. [2020-10-14 18:34:48,590 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 306 transitions. Word has length 44 [2020-10-14 18:34:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:48,594 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 306 transitions. [2020-10-14 18:34:48,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:34:48,594 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 306 transitions. [2020-10-14 18:34:48,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:34:48,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:48,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:48,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:34:48,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:48,601 INFO L82 PathProgramCache]: Analyzing trace with hash -64855805, now seen corresponding path program 1 times [2020-10-14 18:34:48,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:48,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291533875] [2020-10-14 18:34:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 18:34:49,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:34:49,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 18:34:49,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:34:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 18:34:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:34:49,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:49,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:49,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:49,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:34:49,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:34:49,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:34:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:34:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:34:49,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291533875] [2020-10-14 18:34:49,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:49,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 18:34:49,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381029569] [2020-10-14 18:34:49,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:34:49,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:34:49,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:34:49,160 INFO L87 Difference]: Start difference. First operand 204 states and 306 transitions. Second operand 8 states. [2020-10-14 18:34:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:49,351 INFO L93 Difference]: Finished difference Result 458 states and 671 transitions. [2020-10-14 18:34:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:34:49,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 18:34:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:49,360 INFO L225 Difference]: With dead ends: 458 [2020-10-14 18:34:49,361 INFO L226 Difference]: Without dead ends: 337 [2020-10-14 18:34:49,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:34:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-14 18:34:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 333. [2020-10-14 18:34:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-14 18:34:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 476 transitions. [2020-10-14 18:34:49,397 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 476 transitions. Word has length 44 [2020-10-14 18:34:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:49,399 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 476 transitions. [2020-10-14 18:34:49,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:34:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 476 transitions. [2020-10-14 18:34:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 18:34:49,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:49,402 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:49,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:34:49,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:49,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2005027956, now seen corresponding path program 2 times [2020-10-14 18:34:49,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:49,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048225941] [2020-10-14 18:34:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 18:34:49,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-14 18:34:49,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:34:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 18:34:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:34:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:34:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:34:49,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:34:49,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:34:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 18:34:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:34:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:34:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:34:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 18:34:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:49,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:34:49,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:34:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:34:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:34:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:34:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:34:49,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:34:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:34:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 18:34:49,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:34:49,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:34:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:34:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:34:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:34:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:34:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 18:34:50,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048225941] [2020-10-14 18:34:50,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:34:50,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 18:34:50,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417404622] [2020-10-14 18:34:50,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:34:50,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:34:50,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:34:50,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:34:50,046 INFO L87 Difference]: Start difference. First operand 333 states and 476 transitions. Second operand 13 states. [2020-10-14 18:34:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:34:50,717 INFO L93 Difference]: Finished difference Result 466 states and 664 transitions. [2020-10-14 18:34:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:34:50,718 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-14 18:34:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:34:50,723 INFO L225 Difference]: With dead ends: 466 [2020-10-14 18:34:50,723 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 18:34:50,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:34:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 18:34:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 382. [2020-10-14 18:34:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-14 18:34:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 541 transitions. [2020-10-14 18:34:50,765 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 541 transitions. Word has length 48 [2020-10-14 18:34:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:34:50,766 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 541 transitions. [2020-10-14 18:34:50,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:34:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 541 transitions. [2020-10-14 18:34:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 18:34:50,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:34:50,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:34:50,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:34:50,773 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:34:50,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:34:50,773 INFO L82 PathProgramCache]: Analyzing trace with hash 415515576, now seen corresponding path program 1 times [2020-10-14 18:34:50,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:34:50,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639075129] [2020-10-14 18:34:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:34:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 18:34:50,798 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 18:34:50,798 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:34:50,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:34:50,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:34:50 BoogieIcfgContainer [2020-10-14 18:34:50,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:34:50,848 INFO L168 Benchmark]: Toolchain (without parser) took 20819.95 ms. Allocated memory was 148.9 MB in the beginning and 417.3 MB in the end (delta: 268.4 MB). Free memory was 104.2 MB in the beginning and 114.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 258.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,855 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.68 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.2 MB in the beginning and 181.0 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,862 INFO L168 Benchmark]: Boogie Preprocessor took 50.77 ms. Allocated memory is still 205.5 MB. Free memory was 181.0 MB in the beginning and 179.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,863 INFO L168 Benchmark]: RCFGBuilder took 620.19 ms. Allocated memory is still 205.5 MB. Free memory was 179.2 MB in the beginning and 148.8 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,863 INFO L168 Benchmark]: TraceAbstraction took 19640.77 ms. Allocated memory was 205.5 MB in the beginning and 417.3 MB in the end (delta: 211.8 MB). Free memory was 148.8 MB in the beginning and 114.5 MB in the end (delta: 34.4 MB). Peak memory consumption was 246.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:34:50,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 502.68 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.2 MB in the beginning and 181.0 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.77 ms. Allocated memory is still 205.5 MB. Free memory was 181.0 MB in the beginning and 179.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 620.19 ms. Allocated memory is still 205.5 MB. Free memory was 179.2 MB in the beginning and 148.8 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19640.77 ms. Allocated memory was 205.5 MB in the beginning and 417.3 MB in the end (delta: 211.8 MB). Free memory was 148.8 MB in the beginning and 114.5 MB in the end (delta: 34.4 MB). Peak memory consumption was 246.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 101, overapproximation of bitwiseAnd at line 99. Possible FailurePath: [L217] unsigned int a ; [L218] unsigned int ma = __VERIFIER_nondet_uint(); [L219] signed char ea = __VERIFIER_nondet_char(); [L220] unsigned int b ; [L221] unsigned int mb = __VERIFIER_nondet_uint(); [L222] signed char eb = __VERIFIER_nondet_char(); [L223] unsigned int r_add ; [L224] unsigned int zero ; [L225] int sa ; [L226] int sb ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int tmp___1 ; [L230] int tmp___2 ; [L231] int tmp___3 ; [L232] int tmp___4 ; [L233] int tmp___5 ; [L234] int tmp___6 ; [L235] int tmp___7 ; [L236] int tmp___8 ; [L237] int tmp___9 ; [L238] int __retres23 ; [L242] CALL, EXPR base2flt(0, 0) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND TRUE ! m [L21] __retres4 = 0U [L71] return (__retres4); [L242] RET, EXPR base2flt(0, 0) [L242] zero = base2flt(0, 0) [L243] CALL, EXPR base2flt(ma, ea) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND TRUE m >= 1U << 25U [L55] COND TRUE e >= 127 [L56] __retres4 = 4294967295U [L71] return (__retres4); [L243] RET, EXPR base2flt(ma, ea) [L243] a = base2flt(ma, ea) [L244] CALL, EXPR base2flt(mb, eb) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND FALSE !(m >= 1U << 25U) [L67] m = m & ~ (1U << 24U) [L68] res = m | ((unsigned int ) (e + 128) << 24U) [L69] __retres4 = res [L71] return (__retres4); [L244] RET, EXPR base2flt(mb, eb) [L244] b = base2flt(mb, eb) [L246] COND FALSE !(a < zero) [L249] COND TRUE a > zero [L250] tmp = 1 [L254] sa = tmp [L256] COND FALSE !(b < zero) [L259] COND TRUE b > zero [L260] tmp___0 = 1 [L264] sb = tmp___0 [L267] CALL addflt(a, b) [L75] unsigned int res ; [L76] unsigned int ma ; [L77] unsigned int mb ; [L78] unsigned int delta ; [L79] int ea ; [L80] int eb ; [L81] unsigned int tmp ; [L82] unsigned int __retres10 ; [L85] COND FALSE !(a < b) [L92] COND FALSE !(! b) [L99] ma = a & ((1U << 24U) - 1U) [L100] ea = (int )(a >> 24U) - 128 [L101] ma = ma | (1U << 24U) [L102] mb = b & ((1U << 24U) - 1U) [L103] eb = (int )(b >> 24U) - 128 [L104] mb = mb | (1U << 24U) [L105] CALL __VERIFIER_assert(ea >= eb) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 913 SDtfs, 530 SDslu, 6191 SDs, 0 SdLazy, 1518 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred 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: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 210 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 38795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 80/109 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...