/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 SingleStatement --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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:01:15,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:01:15,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:01:15,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:01:15,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:01:15,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:01:15,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:01:15,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:01:15,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:01:15,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:01:15,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:01:15,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:01:15,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:01:15,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:01:15,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:01:15,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:01:15,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:01:15,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:01:15,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:01:15,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:01:15,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:01:15,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:01:15,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:01:15,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:01:15,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:01:15,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:01:15,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:01:15,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:01:15,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:01:15,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:01:15,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:01:15,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:01:15,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:01:15,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:01:15,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:01:15,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:01:15,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:01:15,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:01:15,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:01:15,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:01:15,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:01:15,932 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 [2020-09-25 08:01:15,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:01:15,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:01:15,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:01:15,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:01:15,987 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:01:15,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:01:15,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:01:15,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:01:15,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:01:15,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:01:15,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:01:15,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:01:15,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:01:15,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:01:15,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:01:15,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:01:15,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:01:15,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:01:15,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:01:15,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:01:15,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:01:15,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:01:15,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:01:15,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:01:15,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:01:15,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:01:15,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:01:15,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:01:15,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:01:15,994 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 -> SingleStatement 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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=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=0.8;log-additional-information=true; [2020-09-25 08:01:16,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:01:16,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:01:16,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:01:16,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:01:16,517 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:01:16,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2020-09-25 08:01:16,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf7839016/3ffce96f06ca42cfbc7dcf8792467adf/FLAGea365d72f [2020-09-25 08:01:17,167 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:01:17,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/string-1.i [2020-09-25 08:01:17,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf7839016/3ffce96f06ca42cfbc7dcf8792467adf/FLAGea365d72f [2020-09-25 08:01:17,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf7839016/3ffce96f06ca42cfbc7dcf8792467adf [2020-09-25 08:01:17,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:01:17,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:01:17,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:01:17,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:01:17,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:01:17,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:17,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17, skipping insertion in model container [2020-09-25 08:01:17,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:17,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:01:17,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:01:17,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:01:17,865 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:01:17,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:01:17,927 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:01:17,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17 WrapperNode [2020-09-25 08:01:17,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:01:17,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:01:17,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:01:17,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:01:18,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:18,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:18,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:18,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:18,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:18,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:18,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (1/1) ... [2020-09-25 08:01:18,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:01:18,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:01:18,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:01:18,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:01:18,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (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 [2020-09-25 08:01:18,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:01:18,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:01:18,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:01:18,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:01:18,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:01:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:01:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:01:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:01:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:01:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:01:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:01:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:01:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:01:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:01:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:01:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:01:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:01:18,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:01:18,725 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:01:18,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:01:18 BoogieIcfgContainer [2020-09-25 08:01:18,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:01:18,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:01:18,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:01:18,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:01:18,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:01:17" (1/3) ... [2020-09-25 08:01:18,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3823d1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:01:18, skipping insertion in model container [2020-09-25 08:01:18,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:17" (2/3) ... [2020-09-25 08:01:18,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3823d1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:01:18, skipping insertion in model container [2020-09-25 08:01:18,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:01:18" (3/3) ... [2020-09-25 08:01:18,742 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2020-09-25 08:01:18,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:01:18,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:01:18,782 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:01:18,811 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:01:18,812 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:01:18,812 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:01:18,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:01:18,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:01:18,812 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:01:18,812 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:01:18,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:01:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 08:01:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 08:01:18,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:18,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:18,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash -768807104, now seen corresponding path program 1 times [2020-09-25 08:01:18,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:18,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440245048] [2020-09-25 08:01:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:19,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:19,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:19,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:01:19,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:01:19,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-25 08:01:19,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:19,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:19,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:19,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 08:01:19,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:19,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:01:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:19,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:19,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:19,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:01:19,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:19,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:19,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:01:19,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440245048] [2020-09-25 08:01:19,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:19,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:01:19,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15643404] [2020-09-25 08:01:19,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:01:19,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:19,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:01:19,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:01:19,769 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 3 states. [2020-09-25 08:01:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:20,050 INFO L93 Difference]: Finished difference Result 188 states and 215 transitions. [2020-09-25 08:01:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:01:20,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-25 08:01:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:20,066 INFO L225 Difference]: With dead ends: 188 [2020-09-25 08:01:20,066 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 08:01:20,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:01:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 08:01:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-25 08:01:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 08:01:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-09-25 08:01:20,153 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 37 [2020-09-25 08:01:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:20,154 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-09-25 08:01:20,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:01:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-09-25 08:01:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 08:01:20,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:20,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:20,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:01:20,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:20,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1309055982, now seen corresponding path program 1 times [2020-09-25 08:01:20,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:20,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670151901] [2020-09-25 08:01:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:20,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:20,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 08:01:20,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:01:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-25 08:01:20,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:20,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:01:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:01:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:01:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:01:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:20,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:20,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:20,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:01:20,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:20,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:20,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:01:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:01:20,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670151901] [2020-09-25 08:01:20,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:20,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:01:20,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008795796] [2020-09-25 08:01:20,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:01:20,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:20,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:01:20,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:01:20,705 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-09-25 08:01:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:20,932 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2020-09-25 08:01:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:01:20,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 08:01:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:20,935 INFO L225 Difference]: With dead ends: 144 [2020-09-25 08:01:20,936 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 08:01:20,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:01:20,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 08:01:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-09-25 08:01:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 08:01:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-09-25 08:01:20,959 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 41 [2020-09-25 08:01:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:20,960 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-09-25 08:01:20,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:01:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-09-25 08:01:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 08:01:20,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:20,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:20,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:01:20,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:20,967 INFO L82 PathProgramCache]: Analyzing trace with hash 512896601, now seen corresponding path program 1 times [2020-09-25 08:01:20,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:20,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261224213] [2020-09-25 08:01:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:21,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:22,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:22,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 08:01:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:01:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-09-25 08:01:22,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:22,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:01:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:01:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:01:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:22,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:01:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:22,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:01:22,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261224213] [2020-09-25 08:01:22,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:01:22,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:01:22,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221132193] [2020-09-25 08:01:22,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:01:22,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:01:22,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:01:22,520 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 6 states. [2020-09-25 08:01:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:22,748 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-09-25 08:01:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:01:22,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 08:01:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:22,750 INFO L225 Difference]: With dead ends: 152 [2020-09-25 08:01:22,750 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 08:01:22,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:01:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 08:01:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2020-09-25 08:01:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 08:01:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-25 08:01:22,760 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 55 [2020-09-25 08:01:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:22,760 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-25 08:01:22,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:01:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-25 08:01:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 08:01:22,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:22,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:22,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:01:22,763 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:22,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1958895614, now seen corresponding path program 2 times [2020-09-25 08:01:22,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:22,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858580271] [2020-09-25 08:01:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:24,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:01:24,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:01:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2063 [2020-09-25 08:01:24,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:24,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:01:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:01:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:01:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:24,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:24,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:24,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:01:24,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:24,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:01:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:01:24,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858580271] [2020-09-25 08:01:24,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:01:24,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:01:24,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308514259] [2020-09-25 08:01:24,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:01:24,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:24,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:01:24,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:01:24,952 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 8 states. [2020-09-25 08:01:25,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:25,222 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-09-25 08:01:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:01:25,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-25 08:01:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:25,224 INFO L225 Difference]: With dead ends: 159 [2020-09-25 08:01:25,224 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 08:01:25,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:01:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 08:01:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2020-09-25 08:01:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 08:01:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-09-25 08:01:25,243 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 62 [2020-09-25 08:01:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:25,246 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-09-25 08:01:25,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:01:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-09-25 08:01:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 08:01:25,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:25,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:25,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:01:25,252 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:25,254 INFO L82 PathProgramCache]: Analyzing trace with hash -699729223, now seen corresponding path program 3 times [2020-09-25 08:01:25,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:25,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021205798] [2020-09-25 08:01:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:25,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:25,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:25,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:28,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:28,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:01:28,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:01:28,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2856 [2020-09-25 08:01:28,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:28,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:01:28,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 08:01:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:01:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:28,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:28,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:28,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:28,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:28,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:01:28,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:28,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 08:01:28,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021205798] [2020-09-25 08:01:28,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:01:28,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:01:28,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296390303] [2020-09-25 08:01:28,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:01:28,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:28,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:01:28,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:01:28,220 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 6 states. [2020-09-25 08:01:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:28,451 INFO L93 Difference]: Finished difference Result 149 states and 158 transitions. [2020-09-25 08:01:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:01:28,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-09-25 08:01:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:28,454 INFO L225 Difference]: With dead ends: 149 [2020-09-25 08:01:28,454 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 08:01:28,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:01:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 08:01:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2020-09-25 08:01:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 08:01:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2020-09-25 08:01:28,467 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 69 [2020-09-25 08:01:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:28,468 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2020-09-25 08:01:28,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:01:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2020-09-25 08:01:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:01:28,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:28,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:28,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:01:28,473 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1399032013, now seen corresponding path program 4 times [2020-09-25 08:01:28,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:28,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411204274] [2020-09-25 08:01:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:32,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:32,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:01:32,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:01:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4401 [2020-09-25 08:01:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:32,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:01:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 08:01:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:01:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:32,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:32,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:32,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:01:32,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:32,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 08:01:33,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411204274] [2020-09-25 08:01:33,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:01:33,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:01:33,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409583010] [2020-09-25 08:01:33,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:01:33,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:33,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:01:33,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:01:33,007 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand 8 states. [2020-09-25 08:01:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:33,217 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2020-09-25 08:01:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:01:33,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-09-25 08:01:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:33,219 INFO L225 Difference]: With dead ends: 156 [2020-09-25 08:01:33,219 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 08:01:33,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:01:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 08:01:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-09-25 08:01:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 08:01:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2020-09-25 08:01:33,228 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 76 [2020-09-25 08:01:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:33,228 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2020-09-25 08:01:33,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:01:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2020-09-25 08:01:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 08:01:33,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:33,230 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:33,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:01:33,231 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:33,231 INFO L82 PathProgramCache]: Analyzing trace with hash -600384135, now seen corresponding path program 5 times [2020-09-25 08:01:33,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:33,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014385039] [2020-09-25 08:01:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:34,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:38,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:38,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 08:01:38,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:01:38,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:01:38,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:38,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:38,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:01:38,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 08:01:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:01:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:38,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:38,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:01:38,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:38,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:01:38,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:38,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:38,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:38,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:38,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:38,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-25 08:01:38,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014385039] [2020-09-25 08:01:38,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:38,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:01:38,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591625931] [2020-09-25 08:01:38,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:01:38,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:38,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:01:38,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:01:38,328 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand 6 states. [2020-09-25 08:01:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:38,471 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-09-25 08:01:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:01:38,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-09-25 08:01:38,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:38,473 INFO L225 Difference]: With dead ends: 107 [2020-09-25 08:01:38,473 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 08:01:38,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:01:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 08:01:38,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 08:01:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 08:01:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 08:01:38,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-09-25 08:01:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:38,475 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 08:01:38,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:01:38,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 08:01:38,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 08:01:38,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:01:38,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 08:01:38,645 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 08:01:38,645 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 08:01:38,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 08:01:38,645 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 08:01:38,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:01:38,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:01:38,646 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 08:01:38,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 08:01:38,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 08:01:38,646 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 08:01:38,646 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 08:01:38,646 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 08:01:38,647 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 08:01:38,647 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 08:01:38,647 INFO L268 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed. [2020-09-25 08:01:38,647 INFO L268 CegarLoopResult]: For program point L35-4(line 35) no Hoare annotation was computed. [2020-09-25 08:01:38,647 INFO L264 CegarLoopResult]: At program point L35-5(lines 35 36) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 08:01:38,647 INFO L268 CegarLoopResult]: For program point L35-6(lines 18 61) no Hoare annotation was computed. [2020-09-25 08:01:38,648 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 08:01:38,648 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 08:01:38,648 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 08:01:38,648 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 61) no Hoare annotation was computed. [2020-09-25 08:01:38,648 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 08:01:38,648 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,648 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,649 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,649 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,649 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,649 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,649 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,649 INFO L268 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,649 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 08:01:38,650 INFO L268 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,650 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-25 08:01:38,650 INFO L268 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,650 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 53) no Hoare annotation was computed. [2020-09-25 08:01:38,650 INFO L268 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,650 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-25 08:01:38,650 INFO L268 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,651 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-25 08:01:38,651 INFO L268 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,651 INFO L268 CegarLoopResult]: For program point L19-13(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,651 INFO L268 CegarLoopResult]: For program point L44-6(line 44) no Hoare annotation was computed. [2020-09-25 08:01:38,651 INFO L268 CegarLoopResult]: For program point L44-7(line 44) no Hoare annotation was computed. [2020-09-25 08:01:38,651 INFO L268 CegarLoopResult]: For program point L19-14(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,651 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 08:01:38,652 INFO L264 CegarLoopResult]: At program point L44-8(lines 42 54) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 08:01:38,652 INFO L268 CegarLoopResult]: For program point L19-15(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,652 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-25 08:01:38,652 INFO L268 CegarLoopResult]: For program point L19-16(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,652 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-25 08:01:38,652 INFO L268 CegarLoopResult]: For program point L19-17(line 19) no Hoare annotation was computed. [2020-09-25 08:01:38,652 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 08:01:38,653 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 08:01:38,654 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-25 08:01:38,654 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 61) no Hoare annotation was computed. [2020-09-25 08:01:38,654 INFO L268 CegarLoopResult]: For program point L46-2(line 46) no Hoare annotation was computed. [2020-09-25 08:01:38,654 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 08:01:38,654 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 08:01:38,654 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 61) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 08:01:38,654 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 08:01:38,655 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 23) no Hoare annotation was computed. [2020-09-25 08:01:38,655 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 08:01:38,655 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 08:01:38,655 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 23) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 08:01:38,655 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 23) no Hoare annotation was computed. [2020-09-25 08:01:38,655 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 08:01:38,655 INFO L268 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-09-25 08:01:38,656 INFO L268 CegarLoopResult]: For program point L47-2(line 47) no Hoare annotation was computed. [2020-09-25 08:01:38,656 INFO L268 CegarLoopResult]: For program point L31-1(lines 31 32) no Hoare annotation was computed. [2020-09-25 08:01:38,656 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 08:01:38,656 INFO L268 CegarLoopResult]: For program point L31-4(line 31) no Hoare annotation was computed. [2020-09-25 08:01:38,656 INFO L264 CegarLoopResult]: At program point L31-5(lines 31 32) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 08:01:38,656 INFO L268 CegarLoopResult]: For program point L31-6(lines 31 32) no Hoare annotation was computed. [2020-09-25 08:01:38,656 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 08:01:38,657 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 08:01:38,658 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 08:01:38,658 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 08:01:38,658 INFO L268 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-09-25 08:01:38,658 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 08:01:38,658 INFO L268 CegarLoopResult]: For program point L58-1(line 58) no Hoare annotation was computed. [2020-09-25 08:01:38,658 INFO L268 CegarLoopResult]: For program point L42-2(lines 42 54) no Hoare annotation was computed. [2020-09-25 08:01:38,658 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 08:01:38,659 INFO L268 CegarLoopResult]: For program point L26-3(lines 26 27) no Hoare annotation was computed. [2020-09-25 08:01:38,659 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 08:01:38,659 INFO L268 CegarLoopResult]: For program point L26-5(line 26) no Hoare annotation was computed. [2020-09-25 08:01:38,659 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 27) the Hoare annotation is: (and (<= main_~found~0 1) (<= 0 main_~found~0)) [2020-09-25 08:01:38,659 INFO L268 CegarLoopResult]: For program point L26-7(lines 26 27) no Hoare annotation was computed. [2020-09-25 08:01:38,659 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 08:01:38,659 INFO L268 CegarLoopResult]: For program point L35-1(lines 35 36) no Hoare annotation was computed. [2020-09-25 08:01:38,660 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-09-25 08:01:38,660 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-25 08:01:38,660 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 08:01:38,660 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-09-25 08:01:38,660 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-09-25 08:01:38,660 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-25 08:01:38,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:01:38 BoogieIcfgContainer [2020-09-25 08:01:38,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:01:38,687 INFO L168 Benchmark]: Toolchain (without parser) took 21161.74 ms. Allocated memory was 145.2 MB in the beginning and 350.7 MB in the end (delta: 205.5 MB). Free memory was 100.4 MB in the beginning and 192.6 MB in the end (delta: -92.2 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:38,688 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:01:38,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.49 ms. Allocated memory is still 145.2 MB. Free memory was 99.7 MB in the beginning and 89.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:38,690 INFO L168 Benchmark]: Boogie Preprocessor took 239.51 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 89.0 MB in the beginning and 181.0 MB in the end (delta: -92.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:38,691 INFO L168 Benchmark]: RCFGBuilder took 561.63 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 156.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:38,692 INFO L168 Benchmark]: TraceAbstraction took 19950.48 ms. Allocated memory was 203.9 MB in the beginning and 350.7 MB in the end (delta: 146.8 MB). Free memory was 156.0 MB in the beginning and 192.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:38,697 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.49 ms. Allocated memory is still 145.2 MB. Free memory was 99.7 MB in the beginning and 89.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 239.51 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 89.0 MB in the beginning and 181.0 MB in the end (delta: -92.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 561.63 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 156.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19950.48 ms. Allocated memory was 203.9 MB in the beginning and 350.7 MB in the end (delta: 146.8 MB). Free memory was 156.0 MB in the beginning and 192.6 MB in the end (delta: -36.6 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 35]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: found <= 1 && 0 <= found - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.6s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 561 SDtfs, 171 SDslu, 1194 SDs, 0 SdLazy, 880 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=6, 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, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 17 PreInvPairs, 28 NumberOfFragments, 58 HoareAnnotationTreeSize, 17 FomulaSimplifications, 62 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 423 NumberOfCodeBlocks, 423 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 37346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 98/118 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...