/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:00:29,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:00:29,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:00:29,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:00:29,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:00:29,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:00:29,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:00:29,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:00:29,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:00:29,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:00:29,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:00:29,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:00:29,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:00:29,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:00:29,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:00:29,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:00:29,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:00:29,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:00:29,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:00:29,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:00:29,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:00:29,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:00:29,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:00:29,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:00:29,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:00:29,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:00:29,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:00:29,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:00:29,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:00:29,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:00:29,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:00:29,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:00:29,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:00:29,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:00:29,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:00:29,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:00:29,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:00:29,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:00:29,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:00:29,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:00:29,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:00:29,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:00:29,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:00:29,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:00:29,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:00:29,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:00:29,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:00:29,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:00:29,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:00:29,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:00:29,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:00:29,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:00:29,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:00:29,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:00:29,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:00:29,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:00:29,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:00:29,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:00:29,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:00:29,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:00:29,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:00:29,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:00:29,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:00:29,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:00:29,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:00:29,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:00:29,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:00:29,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:00:29,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:00:29,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:00:29,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:00:29,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:00:30,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:00:30,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:00:30,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:00:30,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:00:30,120 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:00:30,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2020-10-14 00:00:30,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/186e0b0e2/46935edd07f64a3980112e50652b3be9/FLAG722790294 [2020-10-14 00:00:30,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:00:30,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2020-10-14 00:00:30,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/186e0b0e2/46935edd07f64a3980112e50652b3be9/FLAG722790294 [2020-10-14 00:00:30,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/186e0b0e2/46935edd07f64a3980112e50652b3be9 [2020-10-14 00:00:30,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:00:30,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:00:30,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:00:30,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:00:30,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:00:30,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:00:30" (1/1) ... [2020-10-14 00:00:30,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf6174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:30, skipping insertion in model container [2020-10-14 00:00:30,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:00:30" (1/1) ... [2020-10-14 00:00:31,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:00:31,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:00:31,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:00:31,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:00:31,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:00:31,243 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:00:31,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31 WrapperNode [2020-10-14 00:00:31,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:00:31,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:00:31,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:00:31,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:00:31,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... [2020-10-14 00:00:31,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... [2020-10-14 00:00:31,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... [2020-10-14 00:00:31,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... [2020-10-14 00:00:31,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... [2020-10-14 00:00:31,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... [2020-10-14 00:00:31,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... [2020-10-14 00:00:31,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:00:31,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:00:31,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:00:31,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:00:31,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:00:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:00:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:00:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:00:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-14 00:00:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:00:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:00:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:00:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 00:00:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_pointer [2020-10-14 00:00:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 00:00:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 00:00:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 00:00:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:00:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 00:00:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 00:00:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:00:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:00:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:00:31,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:00:31,677 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 00:00:31,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:00:31 BoogieIcfgContainer [2020-10-14 00:00:31,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:00:31,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:00:31,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:00:31,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:00:31,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:00:30" (1/3) ... [2020-10-14 00:00:31,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e85871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:00:31, skipping insertion in model container [2020-10-14 00:00:31,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:00:31" (2/3) ... [2020-10-14 00:00:31,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e85871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:00:31, skipping insertion in model container [2020-10-14 00:00:31,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:00:31" (3/3) ... [2020-10-14 00:00:31,692 INFO L109 eAbstractionObserver]: Analyzing ICFG flag_loopdep.i [2020-10-14 00:00:31,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:00:31,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:00:31,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:00:31,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:00:31,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:00:31,764 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:00:31,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:00:31,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:00:31,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:00:31,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:00:31,765 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:00:31,785 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 00:00:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 00:00:31,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:31,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:31,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:31,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:31,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1059974619, now seen corresponding path program 1 times [2020-10-14 00:00:31,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:31,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593867557] [2020-10-14 00:00:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 00:00:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 00:00:32,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:32,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 00:00:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:00:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:32,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:32,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:00:32,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:32,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:00:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:32,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:32,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:00:32,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:32,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:32,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:32,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:32,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:32,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:32,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593867557] [2020-10-14 00:00:32,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:00:32,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:00:32,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031365605] [2020-10-14 00:00:32,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:00:32,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:32,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:00:32,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:00:32,391 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-14 00:00:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:32,524 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2020-10-14 00:00:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:00:32,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 00:00:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:32,536 INFO L225 Difference]: With dead ends: 59 [2020-10-14 00:00:32,536 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 00:00:32,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:00:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 00:00:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-14 00:00:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 00:00:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 00:00:32,581 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-10-14 00:00:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:32,581 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 00:00:32,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:00:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 00:00:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 00:00:32,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:32,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:32,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:00:32,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:32,584 INFO L82 PathProgramCache]: Analyzing trace with hash -931069882, now seen corresponding path program 1 times [2020-10-14 00:00:32,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:32,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219572988] [2020-10-14 00:00:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:32,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 00:00:32,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 00:00:32,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:32,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:00:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:32,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:32,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:32,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:32,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:32,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:32,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:32,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:32,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:32,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:00:32,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:32,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:32,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:32,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219572988] [2020-10-14 00:00:32,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:00:32,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 00:00:32,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315915388] [2020-10-14 00:00:32,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:00:32,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:32,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:00:32,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:00:32,835 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-14 00:00:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:32,952 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-14 00:00:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:00:32,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 00:00:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:32,955 INFO L225 Difference]: With dead ends: 51 [2020-10-14 00:00:32,955 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 00:00:32,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 00:00:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2020-10-14 00:00:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 00:00:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 00:00:32,968 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2020-10-14 00:00:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:32,969 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 00:00:32,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:00:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 00:00:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 00:00:32,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:32,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:32,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:00:32,974 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:32,974 INFO L82 PathProgramCache]: Analyzing trace with hash 387293505, now seen corresponding path program 1 times [2020-10-14 00:00:32,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:32,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931868365] [2020-10-14 00:00:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:00:33,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:00:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 00:00:33,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:00:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:00:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:33,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:33,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:00:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:33,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931868365] [2020-10-14 00:00:33,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:00:33,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 00:00:33,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128987400] [2020-10-14 00:00:33,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:00:33,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:33,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:00:33,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:00:33,384 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-14 00:00:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:33,492 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2020-10-14 00:00:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:00:33,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-14 00:00:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:33,494 INFO L225 Difference]: With dead ends: 50 [2020-10-14 00:00:33,495 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 00:00:33,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 00:00:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-14 00:00:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 00:00:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 00:00:33,503 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 23 [2020-10-14 00:00:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:33,503 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 00:00:33,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:00:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 00:00:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 00:00:33,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:33,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:33,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:00:33,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:33,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:33,506 INFO L82 PathProgramCache]: Analyzing trace with hash -5733505, now seen corresponding path program 1 times [2020-10-14 00:00:33,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:33,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137962814] [2020-10-14 00:00:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:00:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:00:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-14 00:00:33,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:00:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:00:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:33,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:33,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:33,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:33,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:00:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:33,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:33,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:33,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137962814] [2020-10-14 00:00:33,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:33,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:00:33,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377241723] [2020-10-14 00:00:33,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:00:33,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:33,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:00:33,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:33,940 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-14 00:00:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:34,070 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-14 00:00:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:00:34,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-14 00:00:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:34,072 INFO L225 Difference]: With dead ends: 59 [2020-10-14 00:00:34,072 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 00:00:34,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:00:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 00:00:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2020-10-14 00:00:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 00:00:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-14 00:00:34,080 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2020-10-14 00:00:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:34,080 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-14 00:00:34,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:00:34,080 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-14 00:00:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 00:00:34,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:34,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:34,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:00:34,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:34,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1590167974, now seen corresponding path program 2 times [2020-10-14 00:00:34,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:34,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095494603] [2020-10-14 00:00:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:34,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:34,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:00:34,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:00:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-14 00:00:34,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:34,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:00:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:00:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:00:34,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:34,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:34,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:34,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:34,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:34,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:34,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:00:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:34,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:00:34,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095494603] [2020-10-14 00:00:34,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:34,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:00:34,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692529926] [2020-10-14 00:00:34,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:00:34,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:34,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:00:34,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:00:34,611 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 7 states. [2020-10-14 00:00:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:34,767 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-14 00:00:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:00:34,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-14 00:00:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:34,769 INFO L225 Difference]: With dead ends: 67 [2020-10-14 00:00:34,769 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 00:00:34,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:00:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 00:00:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2020-10-14 00:00:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 00:00:34,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-14 00:00:34,777 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2020-10-14 00:00:34,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:34,777 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-14 00:00:34,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:00:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-14 00:00:34,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 00:00:34,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:34,779 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:34,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:00:34,779 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:34,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash -196837857, now seen corresponding path program 3 times [2020-10-14 00:00:34,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:34,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537457984] [2020-10-14 00:00:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:34,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:35,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:35,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:00:35,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:00:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-14 00:00:35,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:35,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:00:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:00:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:00:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:35,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:35,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:35,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:35,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:35,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:35,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:35,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:35,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:35,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:00:35,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:00:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:35,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:00:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:00:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:00:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 00:00:35,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537457984] [2020-10-14 00:00:35,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:00:35,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:00:35,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111218830] [2020-10-14 00:00:35,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:00:35,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:35,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:00:35,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:35,409 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2020-10-14 00:00:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:35,587 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-14 00:00:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:00:35,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-14 00:00:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:35,589 INFO L225 Difference]: With dead ends: 62 [2020-10-14 00:00:35,589 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 00:00:35,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 00:00:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-14 00:00:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 00:00:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-14 00:00:35,595 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 29 [2020-10-14 00:00:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:35,595 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-14 00:00:35,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:00:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-14 00:00:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 00:00:35,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:35,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:35,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:00:35,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash -65120419, now seen corresponding path program 1 times [2020-10-14 00:00:35,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:35,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676500515] [2020-10-14 00:00:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 00:00:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:00:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-14 00:00:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:00:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:00:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:00:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 00:00:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:37,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:37,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:00:37,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 00:00:37,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:00:37,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676500515] [2020-10-14 00:00:37,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:37,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:00:37,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325772342] [2020-10-14 00:00:37,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:00:37,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:37,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:00:37,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:00:37,633 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 8 states. [2020-10-14 00:00:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:37,867 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2020-10-14 00:00:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:00:37,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 00:00:37,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:37,870 INFO L225 Difference]: With dead ends: 73 [2020-10-14 00:00:37,871 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 00:00:37,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 00:00:37,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-10-14 00:00:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 00:00:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-14 00:00:37,885 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 31 [2020-10-14 00:00:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:37,886 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-14 00:00:37,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:00:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-14 00:00:37,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 00:00:37,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:37,888 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:37,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:00:37,889 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1921138952, now seen corresponding path program 2 times [2020-10-14 00:00:37,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:37,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797974968] [2020-10-14 00:00:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 00:00:40,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:00:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2475 [2020-10-14 00:00:40,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:40,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:00:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:00:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:00:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:40,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:40,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:40,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:40,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:40,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:40,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:00:40,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:00:40,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:40,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:00:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:00:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:00:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 00:00:40,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797974968] [2020-10-14 00:00:40,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:40,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:00:40,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359948238] [2020-10-14 00:00:40,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:00:40,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:40,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:00:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:00:40,620 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2020-10-14 00:00:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:40,852 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-10-14 00:00:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:00:40,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-14 00:00:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:40,855 INFO L225 Difference]: With dead ends: 70 [2020-10-14 00:00:40,855 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 00:00:40,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 00:00:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 00:00:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 00:00:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-14 00:00:40,871 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 34 [2020-10-14 00:00:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:40,872 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-14 00:00:40,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:00:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-14 00:00:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 00:00:40,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:40,877 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:40,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:00:40,878 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:40,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:40,878 INFO L82 PathProgramCache]: Analyzing trace with hash 531922570, now seen corresponding path program 3 times [2020-10-14 00:00:40,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:40,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596333975] [2020-10-14 00:00:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:00:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:00:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:00:45,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:45,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:00:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 00:00:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:00:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:45,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:45,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:45,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:45,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:46,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:00:46,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:00:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:46,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:00:46,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596333975] [2020-10-14 00:00:46,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:46,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:00:46,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254534152] [2020-10-14 00:00:46,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:00:46,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:46,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:00:46,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:46,013 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 9 states. [2020-10-14 00:00:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:46,171 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2020-10-14 00:00:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:00:46,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-14 00:00:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:46,173 INFO L225 Difference]: With dead ends: 83 [2020-10-14 00:00:46,173 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 00:00:46,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 00:00:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 44. [2020-10-14 00:00:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 00:00:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-14 00:00:46,180 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 36 [2020-10-14 00:00:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:46,180 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-14 00:00:46,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:00:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-14 00:00:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 00:00:46,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:46,182 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:46,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:00:46,182 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:46,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1325715781, now seen corresponding path program 4 times [2020-10-14 00:00:46,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:46,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343563189] [2020-10-14 00:00:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 00:00:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:00:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:00:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:00:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 00:00:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:00:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:51,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:51,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:51,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:51,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:51,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:00:51,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:00:51,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:51,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:00:51,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343563189] [2020-10-14 00:00:51,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:51,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:00:51,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495528190] [2020-10-14 00:00:51,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:00:51,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:51,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:00:51,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:51,347 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 10 states. [2020-10-14 00:00:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:51,556 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2020-10-14 00:00:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:00:51,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-14 00:00:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:51,559 INFO L225 Difference]: With dead ends: 91 [2020-10-14 00:00:51,560 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 00:00:51,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:00:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 00:00:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 47. [2020-10-14 00:00:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 00:00:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-10-14 00:00:51,572 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 39 [2020-10-14 00:00:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:51,572 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-10-14 00:00:51,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:00:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-10-14 00:00:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 00:00:51,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:51,574 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:51,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:00:51,574 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:51,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:51,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1576221462, now seen corresponding path program 5 times [2020-10-14 00:00:51,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:51,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044832564] [2020-10-14 00:00:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:56,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 00:00:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:00:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:00:56,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:56,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:00:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:56,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:56,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:56,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:56,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:00:56,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:56,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 00:00:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:56,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:00:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 00:00:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:56,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:00:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:00:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 00:00:56,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044832564] [2020-10-14 00:00:56,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:56,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:00:56,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914874118] [2020-10-14 00:00:56,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:00:56,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:56,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:00:56,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:56,879 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 10 states. [2020-10-14 00:00:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:57,043 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-10-14 00:00:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:00:57,043 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-14 00:00:57,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:57,044 INFO L225 Difference]: With dead ends: 47 [2020-10-14 00:00:57,044 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 00:00:57,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:00:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 00:00:57,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 00:00:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 00:00:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 00:00:57,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-10-14 00:00:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:57,046 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 00:00:57,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:00:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 00:00:57,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 00:00:57,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:00:57,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 00:00:57,248 INFO L264 CegarLoopResult]: At program point initENTRY(lines 9 16) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 00:00:57,248 INFO L268 CegarLoopResult]: For program point initEXIT(lines 9 16) no Hoare annotation was computed. [2020-10-14 00:00:57,248 INFO L268 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-10-14 00:00:57,248 INFO L264 CegarLoopResult]: At program point L12-3(lines 12 15) the Hoare annotation is: (let ((.cse1 (= init_~a.base |init_#in~a.base|))) (or (let ((.cse0 (= 1000000 init_~size))) (and (= |init_#in~a.offset| (+ init_~a.offset (* init_~i~0 4))) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (or (not .cse0) (<= init_~i~0 0)) (= |old(#length)| |#length|) .cse1 (or .cse0 (= |init_#in~size| init_~size)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|))) (and .cse1 (not (= (select (select |#memory_$Pointer$.base| init_~a.base) |init_#in~a.offset|) 0))))) [2020-10-14 00:00:57,248 INFO L268 CegarLoopResult]: For program point L12-4(lines 9 16) no Hoare annotation was computed. [2020-10-14 00:00:57,248 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 00:00:57,249 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 00:00:57,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 00:00:57,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 00:00:57,249 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 00:00:57,249 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 00:00:57,250 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 00:00:57,250 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-10-14 00:00:57,250 INFO L268 CegarLoopResult]: For program point L31-2(lines 31 35) no Hoare annotation was computed. [2020-10-14 00:00:57,250 INFO L264 CegarLoopResult]: At program point L31-3(lines 31 35) the Hoare annotation is: (<= 1 main_~flag~0) [2020-10-14 00:00:57,250 INFO L268 CegarLoopResult]: For program point L31-4(lines 31 35) no Hoare annotation was computed. [2020-10-14 00:00:57,250 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 37) no Hoare annotation was computed. [2020-10-14 00:00:57,250 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-14 00:00:57,251 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-14 00:00:57,251 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 37) no Hoare annotation was computed. [2020-10-14 00:00:57,251 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: false [2020-10-14 00:00:57,251 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-10-14 00:00:57,251 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 37) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 00:00:57,251 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-10-14 00:00:57,251 INFO L268 CegarLoopResult]: For program point L24-2(lines 24 30) no Hoare annotation was computed. [2020-10-14 00:00:57,252 INFO L264 CegarLoopResult]: At program point L24-3(lines 24 30) the Hoare annotation is: (or (<= 1 main_~flag~0) (let ((.cse1 (select |#memory_$Pointer$.base| |main_~#a~0.base|))) (and (let ((.cse0 (select .cse1 |main_~#a~0.offset|))) (or (<= (+ .cse0 1) 0) (<= 1 .cse0))) (<= main_~i~1 0) (let ((.cse2 (select .cse1 (+ (* main_~i~1 4) |main_~#a~0.offset|)))) (or (<= 1 .cse2) (<= (+ .cse2 1) 0)))))) [2020-10-14 00:00:57,252 INFO L268 CegarLoopResult]: For program point L24-4(lines 24 30) no Hoare annotation was computed. [2020-10-14 00:00:57,252 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-10-14 00:00:57,252 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-10-14 00:00:57,252 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-10-14 00:00:57,252 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-10-14 00:00:57,253 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-10-14 00:00:57,253 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-10-14 00:00:57,270 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,272 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,272 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,273 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,273 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,275 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,275 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,276 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,276 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,277 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,277 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,277 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,277 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,281 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,281 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,282 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,282 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,283 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,283 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,284 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,284 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,284 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,285 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,285 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,285 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,287 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,287 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,288 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,288 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,288 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:00:57 BoogieIcfgContainer [2020-10-14 00:00:57,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:00:57,295 INFO L168 Benchmark]: Toolchain (without parser) took 26308.33 ms. Allocated memory was 148.9 MB in the beginning and 464.5 MB in the end (delta: 315.6 MB). Free memory was 103.3 MB in the beginning and 201.2 MB in the end (delta: -97.9 MB). Peak memory consumption was 217.7 MB. Max. memory is 7.1 GB. [2020-10-14 00:00:57,296 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 00:00:57,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.37 ms. Allocated memory is still 148.9 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 00:00:57,302 INFO L168 Benchmark]: Boogie Preprocessor took 123.30 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 92.8 MB in the beginning and 181.3 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-14 00:00:57,302 INFO L168 Benchmark]: RCFGBuilder took 315.69 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-10-14 00:00:57,304 INFO L168 Benchmark]: TraceAbstraction took 25608.41 ms. Allocated memory was 203.9 MB in the beginning and 464.5 MB in the end (delta: 260.6 MB). Free memory was 164.2 MB in the beginning and 201.2 MB in the end (delta: -37.1 MB). Peak memory consumption was 223.5 MB. Max. memory is 7.1 GB. [2020-10-14 00:00:57,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.37 ms. Allocated memory is still 148.9 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.30 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 92.8 MB in the beginning and 181.3 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.69 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25608.41 ms. Allocated memory was 203.9 MB in the beginning and 464.5 MB in the end (delta: 260.6 MB). Free memory was 164.2 MB in the beginning and 201.2 MB in the end (delta: -37.1 MB). Peak memory consumption was 223.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 <= flag - InvariantResult [Line: 24]: Loop Invariant [2020-10-14 00:00:57,329 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,330 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,333 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,333 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,335 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: 1 <= flag || (((#memory_$Pointer$[a][a] + 1 <= 0 || 1 <= #memory_$Pointer$[a][a]) && i <= 0) && (1 <= #memory_$Pointer$[a][i * 4 + a] || #memory_$Pointer$[a][i * 4 + a] + 1 <= 0)) - InvariantResult [Line: 12]: Loop Invariant [2020-10-14 00:00:57,342 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,342 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,342 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,342 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,343 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,344 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,344 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 00:00:57,344 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,345 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,345 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 00:00:57,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-14 00:00:57,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 00:00:57,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (((((((a == a + i * 4 && #memory_$Pointer$ == \old(#memory_$Pointer$)) && (!(1000000 == size) || i <= 0)) && \old(unknown-#length-unknown) == unknown-#length-unknown) && a == a) && (1000000 == size || \old(size) == size)) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(\valid) == \valid) || (a == a && !(#memory_$Pointer$[a][a] == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.2s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 286 SDtfs, 304 SDslu, 547 SDs, 0 SdLazy, 841 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 134 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 21 PreInvPairs, 26 NumberOfFragments, 145 HoareAnnotationTreeSize, 21 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 26199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 95/175 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...