/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:36:36,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:36:36,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:36:36,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:36:36,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:36:36,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:36:36,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:36:36,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:36:36,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:36:36,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:36:36,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:36:36,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:36:36,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:36:36,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:36:36,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:36:36,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:36:36,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:36:36,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:36:36,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:36:36,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:36:36,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:36:36,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:36:36,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:36:36,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:36:36,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:36:36,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:36:36,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:36:36,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:36:36,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:36:36,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:36:36,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:36:36,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:36:36,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:36:36,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:36:36,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:36:36,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:36:36,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:36:36,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:36:36,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:36:36,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:36:36,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:36:36,830 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 [2020-10-27 20:36:36,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:36:36,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:36:36,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:36:36,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:36:36,862 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:36:36,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:36:36,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:36:36,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:36:36,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:36:36,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:36:36,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:36:36,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:36:36,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:36:36,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:36:36,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:36:36,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:36:36,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:36:36,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:36:36,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:36:36,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:36:36,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:36:36,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:36:36,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:36:36,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:36:36,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:36:36,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:36:36,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:36:36,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:36:36,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:36:36,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:36:37,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:36:37,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:36:37,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:36:37,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:36:37,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:36:37,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2020-10-27 20:36:37,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecc79124d/894a9c752359482eb6fed2c19993c971/FLAGee7844b01 [2020-10-27 20:36:38,117 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:36:38,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-1.i [2020-10-27 20:36:38,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecc79124d/894a9c752359482eb6fed2c19993c971/FLAGee7844b01 [2020-10-27 20:36:38,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecc79124d/894a9c752359482eb6fed2c19993c971 [2020-10-27 20:36:38,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:36:38,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:36:38,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:36:38,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:36:38,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:36:38,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c56976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38, skipping insertion in model container [2020-10-27 20:36:38,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:36:38,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:36:38,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:36:38,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:36:38,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:36:38,791 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:36:38,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38 WrapperNode [2020-10-27 20:36:38,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:36:38,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:36:38,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:36:38,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:36:38,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... [2020-10-27 20:36:38,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:36:38,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:36:38,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:36:38,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:36:38,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:36:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:36:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:36:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:36:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:36:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:36:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:36:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:36:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:36:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:36:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:36:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:36:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:36:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 20:36:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:36:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:36:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:36:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:36:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:36:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:36:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:36:39,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:36:39,148 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:36:39,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:39 BoogieIcfgContainer [2020-10-27 20:36:39,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:36:39,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:36:39,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:36:39,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:36:39,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:36:38" (1/3) ... [2020-10-27 20:36:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d9a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:39, skipping insertion in model container [2020-10-27 20:36:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:38" (2/3) ... [2020-10-27 20:36:39,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d9a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:39, skipping insertion in model container [2020-10-27 20:36:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:39" (3/3) ... [2020-10-27 20:36:39,160 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2020-10-27 20:36:39,174 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:36:39,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:36:39,195 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:36:39,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:36:39,229 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:36:39,229 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:36:39,229 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:36:39,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:36:39,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:36:39,230 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:36:39,230 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:36:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-27 20:36:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 20:36:39,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:39,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:39,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:39,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1856646339, now seen corresponding path program 1 times [2020-10-27 20:36:39,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:39,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80189947] [2020-10-27 20:36:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:39,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:39,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:36:39,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:39,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-27 20:36:39,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:36:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:36:39,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:36:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:36:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:36:40,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:36:40,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80189947] [2020-10-27 20:36:40,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:40,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:36:40,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747540705] [2020-10-27 20:36:40,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:36:40,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:40,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:36:40,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:36:40,215 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 8 states. [2020-10-27 20:36:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:40,576 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2020-10-27 20:36:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:36:40,578 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-27 20:36:40,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:40,587 INFO L225 Difference]: With dead ends: 46 [2020-10-27 20:36:40,587 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 20:36:40,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:36:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 20:36:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-27 20:36:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 20:36:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 20:36:40,638 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2020-10-27 20:36:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:40,639 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 20:36:40,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:36:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 20:36:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 20:36:40,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:40,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:40,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:36:40,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:40,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:40,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1047299713, now seen corresponding path program 1 times [2020-10-27 20:36:40,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:40,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496608629] [2020-10-27 20:36:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 20:36:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:36:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-27 20:36:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:36:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:36:40,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:36:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:36:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:41,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:41,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:36:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:36:41,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496608629] [2020-10-27 20:36:41,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:41,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:36:41,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150545839] [2020-10-27 20:36:41,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:36:41,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:36:41,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:36:41,080 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2020-10-27 20:36:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:41,300 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-27 20:36:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:36:41,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 20:36:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:41,304 INFO L225 Difference]: With dead ends: 40 [2020-10-27 20:36:41,304 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 20:36:41,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:36:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 20:36:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-27 20:36:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 20:36:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-27 20:36:41,316 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2020-10-27 20:36:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:41,316 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-27 20:36:41,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:36:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-27 20:36:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:36:41,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:41,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:41,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:36:41,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:41,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:41,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1109888094, now seen corresponding path program 1 times [2020-10-27 20:36:41,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:41,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336358369] [2020-10-27 20:36:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:41,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:36:41,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 20:36:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:36:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:36:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:36:41,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:36:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:41,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:41,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:36:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:36:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:36:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:41,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:41,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:36:41,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:36:41,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336358369] [2020-10-27 20:36:41,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:41,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 20:36:41,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660197403] [2020-10-27 20:36:41,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:41,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:41,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:41,600 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-27 20:36:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:41,728 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-27 20:36:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:41,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-27 20:36:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:41,729 INFO L225 Difference]: With dead ends: 53 [2020-10-27 20:36:41,730 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 20:36:41,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:36:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 20:36:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-27 20:36:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 20:36:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-27 20:36:41,742 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2020-10-27 20:36:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:41,745 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-27 20:36:41,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-27 20:36:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 20:36:41,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:41,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:41,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:36:41,748 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:41,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:41,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1339988677, now seen corresponding path program 2 times [2020-10-27 20:36:41,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:41,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058572117] [2020-10-27 20:36:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:43,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 20:36:43,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:36:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1349 [2020-10-27 20:36:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:36:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:36:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:36:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:43,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:36:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:43,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:43,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:36:43,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:43,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:36:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 20:36:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:36:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:36:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:36:43,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058572117] [2020-10-27 20:36:43,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:43,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:36:43,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494056054] [2020-10-27 20:36:43,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:36:43,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:43,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:36:43,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:36:43,415 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 10 states. [2020-10-27 20:36:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:46,211 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-27 20:36:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:36:46,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-27 20:36:46,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:46,213 INFO L225 Difference]: With dead ends: 49 [2020-10-27 20:36:46,213 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 20:36:46,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:36:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 20:36:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-27 20:36:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 20:36:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-27 20:36:46,226 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 31 [2020-10-27 20:36:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:46,226 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-27 20:36:46,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:36:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-27 20:36:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 20:36:46,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:46,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:46,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:36:46,228 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:46,229 INFO L82 PathProgramCache]: Analyzing trace with hash -774434536, now seen corresponding path program 3 times [2020-10-27 20:36:46,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:46,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513843774] [2020-10-27 20:36:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 20:36:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 20:36:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:36:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:36:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:36:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:36:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:36:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:51,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:51,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:51,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:36:51,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:36:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:51,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:51,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:36:51,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:51,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:36:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:51,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:51,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:36:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 20:36:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:51,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:51,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:51,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 20:36:51,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:36:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:36:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 20:36:51,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513843774] [2020-10-27 20:36:51,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:51,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:36:51,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120139500] [2020-10-27 20:36:51,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:36:51,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:51,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:36:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:36:51,683 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states. [2020-10-27 20:36:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:54,662 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-27 20:36:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:36:54,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-27 20:36:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:54,665 INFO L225 Difference]: With dead ends: 53 [2020-10-27 20:36:54,665 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 20:36:54,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:36:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 20:36:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-27 20:36:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 20:36:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-27 20:36:54,694 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 39 [2020-10-27 20:36:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:54,695 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-27 20:36:54,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:36:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-27 20:36:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 20:36:54,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:54,696 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:54,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:36:54,697 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:54,697 INFO L82 PathProgramCache]: Analyzing trace with hash 600150005, now seen corresponding path program 4 times [2020-10-27 20:36:54,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:54,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040447212] [2020-10-27 20:36:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:54,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 20:36:59,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 20:36:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 20:36:59,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:36:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:36:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 20:36:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:59,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:59,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:36:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:36:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:59,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:59,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:59,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:36:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:59,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:59,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:59,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:59,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 20:36:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:59,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:59,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:36:59,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:36:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:36:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 20:37:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:00,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:00,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:37:00,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:37:00,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 20:37:00,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040447212] [2020-10-27 20:37:00,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:37:00,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 20:37:00,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888591413] [2020-10-27 20:37:00,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:37:00,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:00,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:37:00,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:37:00,019 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 12 states. [2020-10-27 20:37:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:07,072 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-27 20:37:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:37:07,075 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-27 20:37:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:07,077 INFO L225 Difference]: With dead ends: 57 [2020-10-27 20:37:07,077 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 20:37:07,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-27 20:37:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 20:37:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-27 20:37:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:37:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-27 20:37:07,093 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 47 [2020-10-27 20:37:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:07,093 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-27 20:37:07,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:37:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-27 20:37:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:37:07,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:07,095 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:07,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:37:07,096 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1433002450, now seen corresponding path program 5 times [2020-10-27 20:37:07,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:07,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960417003] [2020-10-27 20:37:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:09,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:09,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:09,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:09,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:10,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:12,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 20:37:12,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 20:37:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 20:37:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 20:37:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:37:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 20:37:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:14,752 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 80 DAG size of output: 29 [2020-10-27 20:37:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:15,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:15,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:37:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:37:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:15,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:15,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:15,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:15,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:37:15,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:37:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:37:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:15,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:37:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:15,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:15,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:15,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:15,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:37:15,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:37:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:15,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:37:15,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 20:37:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:15,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:15,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:15,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:37:15,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:37:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:37:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:15,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 20:37:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:15,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:15,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:37:15,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:37:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:37:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 20:37:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:15,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:15,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:15,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:15,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:37:15,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:37:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-27 20:37:15,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960417003] [2020-10-27 20:37:15,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:37:15,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 20:37:15,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580101132] [2020-10-27 20:37:15,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 20:37:15,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:15,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 20:37:15,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-27 20:37:15,521 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 17 states. [2020-10-27 20:37:15,913 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-27 20:37:30,944 WARN L193 SmtUtils]: Spent 14.74 s on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-27 20:37:35,214 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 4)) (= |c_#t~string0.offset| |c_old(#t~string0.offset)|) (= |c_old(#length)| |c_#length|) (= |c_#t~string1.base| |c_old(#t~string1.base)|) (let ((.cse0 (div (* c_main_~x~0 2) 4294967296))) (<= (+ c_main_~x~0 (* 2147483648 (div (+ (* c_main_~x~0 (- 1)) (* .cse0 2147483648) 2147483648) 2147483648))) (+ (* 2147483648 .cse0) 2))) (= |c_#NULL.base| |c_old(#NULL.base)|) (<= 2 (+ (* 4294967296 (div (+ (* c_main_~sn~0 (- 1)) 8) 4294967296)) c_main_~sn~0)) (= |c_#t~string0.base| |c_old(#t~string0.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string1.offset| |c_old(#t~string1.offset)|)) is different from false [2020-10-27 20:37:52,107 WARN L193 SmtUtils]: Spent 12.61 s on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2020-10-27 20:38:00,596 WARN L193 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-27 20:38:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:21,982 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2020-10-27 20:38:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 20:38:21,983 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-27 20:38:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:21,984 INFO L225 Difference]: With dead ends: 63 [2020-10-27 20:38:21,984 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 20:38:21,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=4, NotChecked=60, Total=1056 [2020-10-27 20:38:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 20:38:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-27 20:38:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 20:38:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-27 20:38:22,008 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 55 [2020-10-27 20:38:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:22,009 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-27 20:38:22,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 20:38:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-27 20:38:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 20:38:22,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:22,016 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:38:22,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:38:22,017 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1228998319, now seen corresponding path program 6 times [2020-10-27 20:38:22,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:22,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639019229] [2020-10-27 20:38:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:27,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:27,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 20:38:27,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-27 20:38:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 20:38:27,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:38:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:38:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 20:38:27,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:31,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:31,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:31,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:38:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:31,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:31,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:38:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:38:31,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:38:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:38:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:31,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:31,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:38:31,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:38:31,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:38:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 20:38:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:31,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:31,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:38:31,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:38:31,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:38:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:38:31,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 20:38:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:31,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:31,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:38:31,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:38:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:38:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 20:38:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:38:31,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:38:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:38:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 20:38:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:31,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:31,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:38:31,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:38:31,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:38:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:38:31,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 30 proven. 80 refuted. 1 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 20:38:31,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639019229] [2020-10-27 20:38:31,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:38:31,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 20:38:31,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686406478] [2020-10-27 20:38:31,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:38:31,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:31,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:38:31,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=153, Unknown=2, NotChecked=0, Total=182 [2020-10-27 20:38:31,642 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 14 states. [2020-10-27 20:38:59,490 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_#t~string0.offset| |c_old(#t~string0.offset)|) (= |c_old(#length)| |c_#length|) (= |c_#t~string1.base| |c_old(#t~string1.base)|) (= |c_#NULL.base| |c_old(#NULL.base)|) (let ((.cse0 (div (* c_main_~x~0 2) 4294967296))) (<= (+ c_main_~x~0 (* 2147483648 (div (+ (* c_main_~x~0 (- 1)) (* .cse0 2147483648) 2147483650) 2147483648))) (+ (* 2147483648 .cse0) 3))) (= |c_#t~string0.base| |c_old(#t~string0.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 5)) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string1.offset| |c_old(#t~string1.offset)|)) is different from false [2020-10-27 20:39:03,703 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 18 [2020-10-27 20:39:37,181 WARN L193 SmtUtils]: Spent 29.24 s on a formula simplification that was a NOOP. DAG size: 42 [2020-10-27 20:39:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:39:43,895 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-10-27 20:39:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 20:39:43,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-27 20:39:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:39:43,897 INFO L225 Difference]: With dead ends: 65 [2020-10-27 20:39:43,897 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 20:39:43,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=118, Invalid=631, Unknown=11, NotChecked=52, Total=812 [2020-10-27 20:39:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 20:39:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-27 20:39:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 20:39:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-27 20:39:43,911 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 63 [2020-10-27 20:39:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:39:43,912 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-27 20:39:43,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:39:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-27 20:39:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 20:39:43,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:39:43,914 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:39:43,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:39:43,914 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:39:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:39:43,915 INFO L82 PathProgramCache]: Analyzing trace with hash 348651148, now seen corresponding path program 7 times [2020-10-27 20:39:43,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:39:43,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470495793] [2020-10-27 20:39:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:39:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:39:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:44,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:39:49,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:39:49,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 20:39:49,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 20:39:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 20:39:49,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:39:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 20:39:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:39:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 20:39:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:39:53,602 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-27 20:40:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:40:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:40:04,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:40:04,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:40:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:40:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:40:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:40:04,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:40:04,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:40:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:40:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 20:40:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:40:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:40:04,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:40:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:40:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 20:40:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:40:04,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:40:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:40:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:40:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 20:40:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:40:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:40:04,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:40:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:40:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 20:40:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:40:04,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:40:04,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:40:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:40:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 20:40:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:40:04,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 20:40:04,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:40:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:40:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 20:40:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:40:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:40:04,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:40:04,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:40:04,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:40:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:40:04,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:40:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:40:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:40:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:40:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:40:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 40 proven. 114 refuted. 8 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-27 20:40:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470495793] [2020-10-27 20:40:04,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:40:04,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 20:40:04,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397401591] [2020-10-27 20:40:04,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 20:40:04,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:40:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 20:40:04,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=230, Unknown=6, NotChecked=0, Total=272 [2020-10-27 20:40:04,409 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 17 states. [2020-10-27 20:40:46,633 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-27 20:40:48,730 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_#t~string0.offset| |c_old(#t~string0.offset)|) (= |c_old(#length)| |c_#length|) (= |c_#t~string1.base| |c_old(#t~string1.base)|) (or (<= (+ (* 4294967296 (div (+ c_main_~sn~0 4294967287) 4294967296)) 8) c_main_~sn~0) (and (<= c_main_~sn~0 2) (<= 2 c_main_~sn~0))) (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 6)) (= |c_#NULL.base| |c_old(#NULL.base)|) (<= c_main_~x~0 (let ((.cse0 (div (* c_main_~x~0 2) 4294967296))) (+ (* 2147483648 (div (+ c_main_~x~0 (* .cse0 (- 2147483648)) (- 1)) 2147483648)) (* 2147483648 .cse0) 1))) (= |c_#t~string0.base| |c_old(#t~string0.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string1.offset| |c_old(#t~string1.offset)|)) is different from false