/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:13:36,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:13:36,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:13:36,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:13:36,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:13:36,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:13:36,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:13:36,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:13:36,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:13:36,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:13:36,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:13:36,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:13:36,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:13:36,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:13:36,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:13:36,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:13:36,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:13:36,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:13:36,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:13:36,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:13:36,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:13:36,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:13:36,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:13:36,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:13:36,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:13:36,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:13:36,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:13:36,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:13:36,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:13:36,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:13:36,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:13:36,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:13:36,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:13:36,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:13:36,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:13:36,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:13:36,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:13:36,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:13:36,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:13:36,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:13:36,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:13:36,788 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 00:13:36,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:13:36,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:13:36,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:13:36,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:13:36,813 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:13:36,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:13:36,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:13:36,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:13:36,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:13:36,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:13:36,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:13:36,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:13:36,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:13:36,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:13:36,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:13:36,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:13:36,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:13:36,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:13:36,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:13:36,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:13:36,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:13:36,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:13:36,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:13:36,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:13:36,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:13:36,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:13:36,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:13:36,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:13:36,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:13:36,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:13:37,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:13:37,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:13:37,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:13:37,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:13:37,158 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:13:37,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-14 00:13:37,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/988e9f7d8/2ed95ba2cfce49258828ce27079199f8/FLAG14f17613f [2020-10-14 00:13:37,774 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:13:37,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-14 00:13:37,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/988e9f7d8/2ed95ba2cfce49258828ce27079199f8/FLAG14f17613f [2020-10-14 00:13:38,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/988e9f7d8/2ed95ba2cfce49258828ce27079199f8 [2020-10-14 00:13:38,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:13:38,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:13:38,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:38,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:13:38,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:13:38,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e37c865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38, skipping insertion in model container [2020-10-14 00:13:38,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:13:38,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:13:38,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:38,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:13:38,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:38,604 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:13:38,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38 WrapperNode [2020-10-14 00:13:38,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:38,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:13:38,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:13:38,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:13:38,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (1/1) ... [2020-10-14 00:13:38,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:13:38,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:13:38,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:13:38,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:13:38,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (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 00:13:38,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:13:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:13:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:13:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-14 00:13:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-14 00:13:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-14 00:13:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:13:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:13:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 00:13:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:13:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:13:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-14 00:13:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-14 00:13:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-14 00:13:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:13:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:13:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:13:39,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:13:39,302 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 00:13:39,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:39 BoogieIcfgContainer [2020-10-14 00:13:39,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:13:39,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:13:39,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:13:39,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:13:39,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:13:38" (1/3) ... [2020-10-14 00:13:39,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29843baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:39, skipping insertion in model container [2020-10-14 00:13:39,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:38" (2/3) ... [2020-10-14 00:13:39,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29843baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:39, skipping insertion in model container [2020-10-14 00:13:39,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:39" (3/3) ... [2020-10-14 00:13:39,316 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-14 00:13:39,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:13:39,336 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:13:39,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:13:39,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:13:39,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:13:39,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:13:39,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:13:39,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:13:39,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:13:39,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:13:39,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:13:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-14 00:13:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 00:13:39,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:39,408 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 00:13:39,409 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:39,414 INFO L82 PathProgramCache]: Analyzing trace with hash 931229349, now seen corresponding path program 1 times [2020-10-14 00:13:39,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:39,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800688588] [2020-10-14 00:13:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:39,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:40,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:44,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 00:13:44,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 00:13:44,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:44,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:13:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:13:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:13:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:13:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:44,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:44,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:44,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:44,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:44,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:44,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 00:13:44,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:44,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:44,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:13:44,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:44,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:13:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:44,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:44,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:13:44,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:44,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:13:44,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:13:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:44,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:44,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:44,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:44,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:44,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:13:44,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:44,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:13:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:44,930 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 00:13:44,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800688588] [2020-10-14 00:13:44,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:44,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:13:44,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779870318] [2020-10-14 00:13:44,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:13:44,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:44,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:13:44,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:13:44,965 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 6 states. [2020-10-14 00:13:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:45,123 INFO L93 Difference]: Finished difference Result 192 states and 315 transitions. [2020-10-14 00:13:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:13:45,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-14 00:13:45,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:45,142 INFO L225 Difference]: With dead ends: 192 [2020-10-14 00:13:45,142 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 00:13:45,148 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 00:13:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 00:13:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-10-14 00:13:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 00:13:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 127 transitions. [2020-10-14 00:13:45,210 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 127 transitions. Word has length 36 [2020-10-14 00:13:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:45,211 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 127 transitions. [2020-10-14 00:13:45,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:13:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 127 transitions. [2020-10-14 00:13:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 00:13:45,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:45,215 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 00:13:45,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:13:45,216 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:45,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:45,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2133981637, now seen corresponding path program 1 times [2020-10-14 00:13:45,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:45,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120212364] [2020-10-14 00:13:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:45,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:47,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 00:13:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2539 [2020-10-14 00:13:47,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:47,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:13:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:13:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:13:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:47,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:47,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:47,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:47,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:47,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:47,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:47,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:47,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:13:47,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:47,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:13:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:47,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:13:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:13:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:47,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:47,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:47,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:13:47,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:47,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:13:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:47,921 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 00:13:47,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120212364] [2020-10-14 00:13:47,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:47,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:13:47,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137852218] [2020-10-14 00:13:47,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:13:47,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:47,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:13:47,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:13:47,926 INFO L87 Difference]: Start difference. First operand 86 states and 127 transitions. Second operand 6 states. [2020-10-14 00:13:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:48,057 INFO L93 Difference]: Finished difference Result 175 states and 265 transitions. [2020-10-14 00:13:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:13:48,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-14 00:13:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:48,061 INFO L225 Difference]: With dead ends: 175 [2020-10-14 00:13:48,061 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 00:13:48,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:13:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 00:13:48,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-10-14 00:13:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 00:13:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 174 transitions. [2020-10-14 00:13:48,083 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 174 transitions. Word has length 40 [2020-10-14 00:13:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:48,083 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 174 transitions. [2020-10-14 00:13:48,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:13:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 174 transitions. [2020-10-14 00:13:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 00:13:48,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:48,087 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 00:13:48,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:13:48,087 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:48,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1547175623, now seen corresponding path program 1 times [2020-10-14 00:13:48,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:48,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592423143] [2020-10-14 00:13:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:48,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:52,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 00:13:52,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4784 [2020-10-14 00:13:52,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:52,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:52,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:13:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:13:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:13:52,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 00:13:52,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:52,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:52,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:52,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:52,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:52,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:52,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:52,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:52,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:52,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:52,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:52,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:52,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:52,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:52,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:52,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:52,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:52,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:52,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:13:52,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:52,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:13:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:53,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:53,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:13:53,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:53,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:13:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:13:53,046 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 00:13:53,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592423143] [2020-10-14 00:13:53,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:13:53,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 00:13:53,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909210362] [2020-10-14 00:13:53,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:13:53,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:53,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:13:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:13:53,049 INFO L87 Difference]: Start difference. First operand 117 states and 174 transitions. Second operand 8 states. [2020-10-14 00:13:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:53,264 INFO L93 Difference]: Finished difference Result 246 states and 370 transitions. [2020-10-14 00:13:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:13:53,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-10-14 00:13:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:53,273 INFO L225 Difference]: With dead ends: 246 [2020-10-14 00:13:53,273 INFO L226 Difference]: Without dead ends: 185 [2020-10-14 00:13:53,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:13:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-14 00:13:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2020-10-14 00:13:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 00:13:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 263 transitions. [2020-10-14 00:13:53,323 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 263 transitions. Word has length 40 [2020-10-14 00:13:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:53,327 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 263 transitions. [2020-10-14 00:13:53,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:13:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 263 transitions. [2020-10-14 00:13:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 00:13:53,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:53,334 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 00:13:53,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:13:53,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1252573624, now seen corresponding path program 1 times [2020-10-14 00:13:53,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:53,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476375700] [2020-10-14 00:13:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:54,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:54,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:13:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:13:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-14 00:13:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:54,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:13:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:13:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:13:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:54,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:54,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:54,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:54,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:54,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:54,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:13:54,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:54,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:13:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:13:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:13:54,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:54,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:54,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:54,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:13:54,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:54,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:13:54,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:54,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:13:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:54,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:54,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:13:54,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:13:54,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:54,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:13:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:54,803 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 00:13:54,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476375700] [2020-10-14 00:13:54,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:54,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:13:54,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917920527] [2020-10-14 00:13:54,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:13:54,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:54,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:13:54,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:13:54,808 INFO L87 Difference]: Start difference. First operand 181 states and 263 transitions. Second operand 10 states. [2020-10-14 00:13:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:55,262 INFO L93 Difference]: Finished difference Result 396 states and 594 transitions. [2020-10-14 00:13:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:13:55,263 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-14 00:13:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:55,268 INFO L225 Difference]: With dead ends: 396 [2020-10-14 00:13:55,268 INFO L226 Difference]: Without dead ends: 330 [2020-10-14 00:13:55,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:13:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-14 00:13:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 199. [2020-10-14 00:13:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 00:13:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 283 transitions. [2020-10-14 00:13:55,316 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 283 transitions. Word has length 44 [2020-10-14 00:13:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:55,319 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 283 transitions. [2020-10-14 00:13:55,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:13:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 283 transitions. [2020-10-14 00:13:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 00:13:55,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:55,324 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] [2020-10-14 00:13:55,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:13:55,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:55,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:55,325 INFO L82 PathProgramCache]: Analyzing trace with hash -414434233, now seen corresponding path program 1 times [2020-10-14 00:13:55,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:55,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923950060] [2020-10-14 00:13:55,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:13:58,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:13:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3301 [2020-10-14 00:13:58,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:58,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:13:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:13:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:13:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:58,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:58,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:58,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:13:58,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:58,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:13:58,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:13:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 00:13:58,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:58,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:13:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:13:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:13:58,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:58,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 00:13:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:58,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:13:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:58,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:58,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:58,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 00:13:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:13:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:58,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:58,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:13:58,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:58,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:13:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:58,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:13:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 00:13:58,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923950060] [2020-10-14 00:13:58,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:58,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 00:13:58,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613838446] [2020-10-14 00:13:58,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:13:58,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:58,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:13:58,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:13:58,793 INFO L87 Difference]: Start difference. First operand 199 states and 283 transitions. Second operand 4 states. [2020-10-14 00:13:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:58,923 INFO L93 Difference]: Finished difference Result 375 states and 534 transitions. [2020-10-14 00:13:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:13:58,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 00:13:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:58,929 INFO L225 Difference]: With dead ends: 375 [2020-10-14 00:13:58,929 INFO L226 Difference]: Without dead ends: 182 [2020-10-14 00:13:58,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:13:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-14 00:13:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2020-10-14 00:13:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 00:13:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 236 transitions. [2020-10-14 00:13:58,958 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 236 transitions. Word has length 44 [2020-10-14 00:13:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:58,959 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 236 transitions. [2020-10-14 00:13:58,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:13:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 236 transitions. [2020-10-14 00:13:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 00:13:58,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:58,964 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 00:13:58,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:13:58,964 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:58,964 INFO L82 PathProgramCache]: Analyzing trace with hash -440320475, now seen corresponding path program 1 times [2020-10-14 00:13:58,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:58,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66849644] [2020-10-14 00:13:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:13:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 00:13:59,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:13:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:13:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:13:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:59,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:59,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:59,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:13:59,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:13:59,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:13:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:59,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:13:59,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:13:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:13:59,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:13:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:13:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:13:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 00:13:59,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66849644] [2020-10-14 00:13:59,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:13:59,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:13:59,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253581537] [2020-10-14 00:13:59,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:13:59,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:13:59,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:13:59,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:13:59,291 INFO L87 Difference]: Start difference. First operand 170 states and 236 transitions. Second operand 8 states. [2020-10-14 00:13:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:13:59,489 INFO L93 Difference]: Finished difference Result 383 states and 549 transitions. [2020-10-14 00:13:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:13:59,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-14 00:13:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:13:59,494 INFO L225 Difference]: With dead ends: 383 [2020-10-14 00:13:59,494 INFO L226 Difference]: Without dead ends: 302 [2020-10-14 00:13:59,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:13:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-14 00:13:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 292. [2020-10-14 00:13:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-14 00:13:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 405 transitions. [2020-10-14 00:13:59,518 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 405 transitions. Word has length 48 [2020-10-14 00:13:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:13:59,519 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 405 transitions. [2020-10-14 00:13:59,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:13:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 405 transitions. [2020-10-14 00:13:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 00:13:59,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:59,522 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 00:13:59,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:13:59,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:59,522 INFO L82 PathProgramCache]: Analyzing trace with hash -383062173, now seen corresponding path program 1 times [2020-10-14 00:13:59,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:59,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707308281] [2020-10-14 00:13:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:13:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:13:59,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 00:13:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:13:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:13:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:13:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:13:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:13:59,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:13:59,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:59,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:13:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:13:59,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:13:59,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:13:59,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:13:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:13:59,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:13:59,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:13:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:13:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:13:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:13:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:13:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:13:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:13:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:00,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:00,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:14:00,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:00,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:00,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:14:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:00,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:14:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:00,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:00,101 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 00:14:00,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707308281] [2020-10-14 00:14:00,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:00,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 00:14:00,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192292144] [2020-10-14 00:14:00,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:14:00,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:00,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:14:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:00,104 INFO L87 Difference]: Start difference. First operand 292 states and 405 transitions. Second operand 13 states. [2020-10-14 00:14:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:00,722 INFO L93 Difference]: Finished difference Result 407 states and 567 transitions. [2020-10-14 00:14:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:14:00,723 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-14 00:14:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:00,729 INFO L225 Difference]: With dead ends: 407 [2020-10-14 00:14:00,729 INFO L226 Difference]: Without dead ends: 351 [2020-10-14 00:14:00,733 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 00:14:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-14 00:14:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 338. [2020-10-14 00:14:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-14 00:14:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 467 transitions. [2020-10-14 00:14:00,768 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 467 transitions. Word has length 48 [2020-10-14 00:14:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:00,768 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 467 transitions. [2020-10-14 00:14:00,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:14:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 467 transitions. [2020-10-14 00:14:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 00:14:00,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:00,770 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 00:14:00,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:14:00,771 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:00,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:00,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1972574553, now seen corresponding path program 1 times [2020-10-14 00:14:00,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:00,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994011536] [2020-10-14 00:14:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 00:14:00,792 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 00:14:00,793 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:14:00,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:14:00,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:14:00 BoogieIcfgContainer [2020-10-14 00:14:00,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:14:00,851 INFO L168 Benchmark]: Toolchain (without parser) took 22770.70 ms. Allocated memory was 146.3 MB in the beginning and 474.0 MB in the end (delta: 327.7 MB). Free memory was 101.8 MB in the beginning and 271.7 MB in the end (delta: -169.8 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:00,858 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 00:14:00,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.84 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 101.4 MB in the beginning and 178.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:00,859 INFO L168 Benchmark]: Boogie Preprocessor took 69.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 176.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:00,866 INFO L168 Benchmark]: RCFGBuilder took 631.16 ms. Allocated memory is still 202.4 MB. Free memory was 175.8 MB in the beginning and 145.5 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:00,867 INFO L168 Benchmark]: TraceAbstraction took 21532.83 ms. Allocated memory was 202.4 MB in the beginning and 474.0 MB in the end (delta: 271.6 MB). Free memory was 145.5 MB in the beginning and 271.7 MB in the end (delta: -126.1 MB). Peak memory consumption was 145.5 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:00,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 531.84 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 101.4 MB in the beginning and 178.8 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 176.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 631.16 ms. Allocated memory is still 202.4 MB. Free memory was 175.8 MB in the beginning and 145.5 MB in the end (delta: 30.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21532.83 ms. Allocated memory was 202.4 MB in the beginning and 474.0 MB in the end (delta: 271.6 MB). Free memory was 145.5 MB in the beginning and 271.7 MB in the end (delta: -126.1 MB). Peak memory consumption was 145.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L241] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] RET, EXPR base2flt(0, 0) [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L242] RET, EXPR base2flt(ma, ea) [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] RET, EXPR base2flt(mb, eb) [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L266] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.4s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 914 SDtfs, 451 SDslu, 5160 SDs, 0 SdLazy, 1065 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred 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, 203 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 29817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 87/117 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...