/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/float-newlib/float_req_bl_1231.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:48:41,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:48:41,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:48:41,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:48:41,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:48:41,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:48:41,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:48:41,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:48:41,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:48:41,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:48:41,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:48:41,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:48:41,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:48:41,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:48:41,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:48:41,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:48:41,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:48:41,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:48:41,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:48:41,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:48:41,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:48:41,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:48:41,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:48:41,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:48:41,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:48:41,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:48:41,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:48:41,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:48:41,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:48:41,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:48:41,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:48:41,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:48:41,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:48:41,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:48:41,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:48:41,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:48:41,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:48:41,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:48:41,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:48:41,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:48:41,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:48:41,854 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 04:48:41,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:48:41,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:48:41,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:48:41,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:48:41,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:48:41,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:48:41,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:48:41,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:48:41,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:48:41,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:48:41,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:48:41,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:48:41,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:48:41,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:48:41,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:48:41,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:48:41,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:48:41,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:48:41,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:48:41,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:48:41,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:48:41,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:48:41,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:48:41,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:48:41,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:48:41,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:48:41,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:48:41,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:48:41,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:48:41,907 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 04:48:42,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:48:42,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:48:42,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:48:42,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:48:42,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:48:42,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2020-10-14 04:48:42,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bae390fb5/6b8961078d534e5f9cd3267d1da47854/FLAG89b93dfc3 [2020-10-14 04:48:42,813 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:48:42,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2020-10-14 04:48:42,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bae390fb5/6b8961078d534e5f9cd3267d1da47854/FLAG89b93dfc3 [2020-10-14 04:48:43,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bae390fb5/6b8961078d534e5f9cd3267d1da47854 [2020-10-14 04:48:43,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:48:43,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:48:43,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:43,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:48:43,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:48:43,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6381bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43, skipping insertion in model container [2020-10-14 04:48:43,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:48:43,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:48:43,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:43,554 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:48:43,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:43,699 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:48:43,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43 WrapperNode [2020-10-14 04:48:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:43,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:48:43,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:48:43,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:48:43,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:48:43,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:48:43,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:48:43,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:48:43,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (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 04:48:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:48:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:48:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-14 04:48:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-10-14 04:48:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-14 04:48:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-14 04:48:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:48:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:48:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:48:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-14 04:48:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:48:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:48:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:48:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:48:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-10-14 04:48:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-14 04:48:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-14 04:48:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:48:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:48:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:48:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:48:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:48:44,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:48:44,192 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 04:48:44,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:44 BoogieIcfgContainer [2020-10-14 04:48:44,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:48:44,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:48:44,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:48:44,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:48:44,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:48:43" (1/3) ... [2020-10-14 04:48:44,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44588ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:44, skipping insertion in model container [2020-10-14 04:48:44,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43" (2/3) ... [2020-10-14 04:48:44,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44588ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:44, skipping insertion in model container [2020-10-14 04:48:44,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:44" (3/3) ... [2020-10-14 04:48:44,205 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-10-14 04:48:44,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:48:44,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 04:48:44,240 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 04:48:44,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:48:44,273 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:48:44,273 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:48:44,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:48:44,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:48:44,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:48:44,274 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:48:44,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:48:44,294 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-14 04:48:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:48:44,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:44,303 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:48:44,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:44,309 INFO L82 PathProgramCache]: Analyzing trace with hash 780794965, now seen corresponding path program 1 times [2020-10-14 04:48:44,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:44,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244940254] [2020-10-14 04:48:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:48:45,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:48:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-14 04:48:45,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 04:48:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:48:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:45,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:48:45,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:45,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:48:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:48:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:48:45,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:45,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:48:45,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:48:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:48:45,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:48:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:48:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 04:48:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:48:45,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:48:45,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244940254] [2020-10-14 04:48:45,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:45,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:48:45,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306950034] [2020-10-14 04:48:45,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:48:45,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:45,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:48:45,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:48:45,581 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-10-14 04:48:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:45,950 INFO L93 Difference]: Finished difference Result 112 states and 153 transitions. [2020-10-14 04:48:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:48:45,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 04:48:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:45,967 INFO L225 Difference]: With dead ends: 112 [2020-10-14 04:48:45,967 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 04:48:45,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 04:48:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 04:48:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-14 04:48:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 04:48:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2020-10-14 04:48:46,073 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2020-10-14 04:48:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:46,081 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2020-10-14 04:48:46,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2020-10-14 04:48:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 04:48:46,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:46,088 INFO L422 BasicCegarLoop]: trace histogram [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 04:48:46,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:46,088 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:46,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2089715847, now seen corresponding path program 1 times [2020-10-14 04:48:46,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:46,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687427387] [2020-10-14 04:48:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 04:48:46,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:48:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-14 04:48:46,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:48:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 04:48:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:48:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:48:46,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:46,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:46,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:48:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:48:46,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:48:46,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:48:46,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:48:46,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:48:46,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:48:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:48:46,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:48:46,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687427387] [2020-10-14 04:48:46,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:46,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:48:46,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277806631] [2020-10-14 04:48:46,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:48:46,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:48:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:48:46,862 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 5 states. [2020-10-14 04:48:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:47,260 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-10-14 04:48:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:48:47,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-14 04:48:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:47,263 INFO L225 Difference]: With dead ends: 64 [2020-10-14 04:48:47,263 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 04:48:47,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:48:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 04:48:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-14 04:48:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 04:48:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2020-10-14 04:48:47,279 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 37 [2020-10-14 04:48:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:47,280 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2020-10-14 04:48:47,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:48:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2020-10-14 04:48:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 04:48:47,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:47,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:47,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:47,283 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:47,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1558675609, now seen corresponding path program 1 times [2020-10-14 04:48:47,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:47,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765383814] [2020-10-14 04:48:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 04:48:47,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:48:47,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 04:48:47,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 04:48:47,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:47,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:47,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:47,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:47,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:47,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:47,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:48:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:48:47,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:48:47,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 04:48:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:48:47,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:48:47,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:48:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:48:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:47,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:47,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 04:48:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:47,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:47,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 04:48:47,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765383814] [2020-10-14 04:48:47,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:47,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:48:47,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625050814] [2020-10-14 04:48:47,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:48:47,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:47,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:48:47,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:48:47,824 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand 6 states. [2020-10-14 04:48:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:48,178 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2020-10-14 04:48:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:48:48,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-14 04:48:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:48,181 INFO L225 Difference]: With dead ends: 89 [2020-10-14 04:48:48,182 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 04:48:48,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:48:48,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 04:48:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-14 04:48:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:48:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2020-10-14 04:48:48,194 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 42 [2020-10-14 04:48:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:48,194 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-10-14 04:48:48,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:48:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2020-10-14 04:48:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:48:48,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:48,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:48,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:48:48,197 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:48,197 INFO L82 PathProgramCache]: Analyzing trace with hash -30304832, now seen corresponding path program 1 times [2020-10-14 04:48:48,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:48,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871815752] [2020-10-14 04:48:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:48,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 04:48:48,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:48:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 04:48:48,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:48,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 04:48:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:48,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:48,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:48,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:48,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:48,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:48,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:48,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:48,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:48:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:48:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:48:48,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:48:48,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:48,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:48:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:48:48,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:48:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:48,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:48:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 04:48:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:48,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:48,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:48,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:48,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 04:48:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:48,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:48,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:48,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:48,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:48,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:48,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 04:48:48,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871815752] [2020-10-14 04:48:48,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:48,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:48:48,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776468323] [2020-10-14 04:48:48,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:48:48,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:48,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:48:48,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:48:48,794 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 6 states. [2020-10-14 04:48:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:49,201 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-10-14 04:48:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:48:49,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-14 04:48:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:49,203 INFO L225 Difference]: With dead ends: 93 [2020-10-14 04:48:49,206 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 04:48:49,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:48:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 04:48:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-14 04:48:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:48:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2020-10-14 04:48:49,224 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 45 [2020-10-14 04:48:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:49,227 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-10-14 04:48:49,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:48:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2020-10-14 04:48:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 04:48:49,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:49,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:49,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:48:49,232 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash 181046081, now seen corresponding path program 1 times [2020-10-14 04:48:49,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:49,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236202803] [2020-10-14 04:48:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:49,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 04:48:49,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:49,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 04:48:49,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:49,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:49,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 04:48:49,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:48:49,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:49,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:49,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:49,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:49,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:49,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:49,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:49,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:49,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:49,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:49,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:48:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:49,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:48:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:48:49,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:49,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 04:48:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:48:49,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:48:49,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:49,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 04:48:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:49,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:49,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:49,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:49,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:48:49,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 04:48:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:49,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:49,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:49,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:49,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:49,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 04:48:49,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236202803] [2020-10-14 04:48:49,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:49,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:48:49,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247990988] [2020-10-14 04:48:49,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:48:49,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:48:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:48:49,612 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 6 states. [2020-10-14 04:48:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:50,132 INFO L93 Difference]: Finished difference Result 122 states and 159 transitions. [2020-10-14 04:48:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:48:50,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-14 04:48:50,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:50,136 INFO L225 Difference]: With dead ends: 122 [2020-10-14 04:48:50,136 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 04:48:50,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:48:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 04:48:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-10-14 04:48:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 04:48:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2020-10-14 04:48:50,155 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 45 [2020-10-14 04:48:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:50,155 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2020-10-14 04:48:50,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:48:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2020-10-14 04:48:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:48:50,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:50,162 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:50,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:48:50,162 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:50,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1746316374, now seen corresponding path program 1 times [2020-10-14 04:48:50,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:50,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392631586] [2020-10-14 04:48:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:50,183 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:50,183 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:50,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:48:50,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:50 BoogieIcfgContainer [2020-10-14 04:48:50,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:50,221 INFO L168 Benchmark]: Toolchain (without parser) took 6905.20 ms. Allocated memory was 148.9 MB in the beginning and 281.0 MB in the end (delta: 132.1 MB). Free memory was 104.7 MB in the beginning and 104.6 MB in the end (delta: 109.2 kB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:50,223 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:50,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.32 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.7 MB in the beginning and 183.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:50,231 INFO L168 Benchmark]: Boogie Preprocessor took 47.01 ms. Allocated memory is still 205.5 MB. Free memory was 183.9 MB in the beginning and 181.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:50,231 INFO L168 Benchmark]: RCFGBuilder took 449.42 ms. Allocated memory is still 205.5 MB. Free memory was 181.7 MB in the beginning and 156.2 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:50,232 INFO L168 Benchmark]: TraceAbstraction took 6018.51 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 156.2 MB in the beginning and 104.6 MB in the end (delta: 51.6 MB). Peak memory consumption was 127.1 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:50,248 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.32 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.7 MB in the beginning and 183.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.01 ms. Allocated memory is still 205.5 MB. Free memory was 183.9 MB in the beginning and 181.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.42 ms. Allocated memory is still 205.5 MB. Free memory was 181.7 MB in the beginning and 156.2 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6018.51 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 156.2 MB in the beginning and 104.6 MB in the end (delta: 51.6 MB). Peak memory consumption was 127.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 75]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 74. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L68] CALL, EXPR isnan_float(x) [L57] return x != x; [L68] RET, EXPR isnan_float(x) [L68] EXPR isnan_float(x) && !isnan_float(y) [L68] CALL, EXPR isnan_float(y) [L57] return x != x; [L68] RET, EXPR isnan_float(y) [L68] EXPR isnan_float(x) && !isnan_float(y) [L68-L69] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L68-L69] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L71] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L71] RET, EXPR fmin_float(x, y) [L71] float res = fmin_float(x, y); [L74] CALL, EXPR isnan_float(x) [L57] return x != x; [L74] RET, EXPR isnan_float(x) [L74] EXPR isnan_float(x) && !isnan_float(y) [L74] CALL, EXPR isnan_float(y) [L57] return x != x; [L74] RET, EXPR isnan_float(y) [L74] EXPR isnan_float(x) && !isnan_float(y) [L74] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L75] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 338 SDtfs, 391 SDslu, 122 SDs, 0 SdLazy, 762 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 15522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 33/33 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...