/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:49:53,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:49:53,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:49:54,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:49:54,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:49:54,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:49:54,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:49:54,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:49:54,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:49:54,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:49:54,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:49:54,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:49:54,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:49:54,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:49:54,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:49:54,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:49:54,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:49:54,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:49:54,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:49:54,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:49:54,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:49:54,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:49:54,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:49:54,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:49:54,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:49:54,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:49:54,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:49:54,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:49:54,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:49:54,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:49:54,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:49:54,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:49:54,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:49:54,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:49:54,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:49:54,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:49:54,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:49:54,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:49:54,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:49:54,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:49:54,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:49:54,081 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 23:49:54,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:49:54,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:49:54,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:49:54,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:49:54,127 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:49:54,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:49:54,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:49:54,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:49:54,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:49:54,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:49:54,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:49:54,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:49:54,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:49:54,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:49:54,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:49:54,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:49:54,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:49:54,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:49:54,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:49:54,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:49:54,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:49:54,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:49:54,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:49:54,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:49:54,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:49:54,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:49:54,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:49:54,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:49:54,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:49:54,133 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:49:54,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:49:54,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:49:54,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:49:54,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:49:54,432 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:49:54,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2020-10-14 23:49:54,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/241f11f42/f5600b17b53b44be8d58e0e555a7270c/FLAG17915aeaf [2020-10-14 23:49:55,032 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:49:55,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2020-10-14 23:49:55,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/241f11f42/f5600b17b53b44be8d58e0e555a7270c/FLAG17915aeaf [2020-10-14 23:49:55,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/241f11f42/f5600b17b53b44be8d58e0e555a7270c [2020-10-14 23:49:55,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:49:55,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:49:55,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:49:55,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:49:55,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:49:55,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4333a088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55, skipping insertion in model container [2020-10-14 23:49:55,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:49:55,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:49:55,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:49:55,830 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:49:55,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:49:55,918 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:49:55,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55 WrapperNode [2020-10-14 23:49:55,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:49:55,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:49:55,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:49:55,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:49:55,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (1/1) ... [2020-10-14 23:49:55,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:49:55,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:49:55,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:49:56,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:49:56,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (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 23:49:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:49:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:49:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:49:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-10-14 23:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-14 23:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:49:56,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-14 23:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:49:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:49:58,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:49:58,906 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 23:49:58,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:58 BoogieIcfgContainer [2020-10-14 23:49:58,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:49:58,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:49:58,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:49:58,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:49:58,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:49:55" (1/3) ... [2020-10-14 23:49:58,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3085d71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:58, skipping insertion in model container [2020-10-14 23:49:58,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:49:55" (2/3) ... [2020-10-14 23:49:58,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3085d71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:49:58, skipping insertion in model container [2020-10-14 23:49:58,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:49:58" (3/3) ... [2020-10-14 23:49:58,926 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2020-10-14 23:49:58,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:49:58,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:49:58,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:49:58,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:49:58,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:49:58,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:49:58,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:49:58,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:49:58,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:49:58,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:49:58,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:49:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 23:49:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 23:49:59,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:49:59,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:49:59,047 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:49:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:49:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 316900320, now seen corresponding path program 1 times [2020-10-14 23:49:59,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:49:59,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35835085] [2020-10-14 23:49:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:49:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:49:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:49:59,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:49:59,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:49:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:49:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-14 23:49:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:49:59,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:49:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:49:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:49:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:49:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:50:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:00,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:00,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:00,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:50:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:00,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:00,047 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 23:50:00,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35835085] [2020-10-14 23:50:00,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:50:00,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:50:00,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142418629] [2020-10-14 23:50:00,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:50:00,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:50:00,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:50:00,075 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-10-14 23:50:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:02,314 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-14 23:50:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:50:02,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 23:50:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:02,335 INFO L225 Difference]: With dead ends: 46 [2020-10-14 23:50:02,335 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 23:50:02,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:50:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 23:50:02,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-10-14 23:50:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 23:50:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-14 23:50:02,389 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-14 23:50:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:02,390 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-14 23:50:02,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:50:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-14 23:50:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 23:50:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:02,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:02,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:50:02,393 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 316483246, now seen corresponding path program 1 times [2020-10-14 23:50:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:02,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742272868] [2020-10-14 23:50:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:02,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:02,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:50:02,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 23:50:02,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:02,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:02,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:50:02,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:50:02,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:50:02,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:02,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:02,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:02,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:50:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:02,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:02,895 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 23:50:02,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742272868] [2020-10-14 23:50:02,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:50:02,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:50:02,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402347654] [2020-10-14 23:50:02,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:50:02,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:02,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:50:02,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:50:02,907 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-10-14 23:50:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:05,026 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-14 23:50:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:50:05,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 23:50:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:05,028 INFO L225 Difference]: With dead ends: 25 [2020-10-14 23:50:05,028 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 23:50:05,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 23:50:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 23:50:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-10-14 23:50:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 23:50:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-14 23:50:05,039 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-10-14 23:50:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:05,040 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-14 23:50:05,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:50:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-14 23:50:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:50:05,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:05,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:05,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:50:05,045 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:05,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:05,045 INFO L82 PathProgramCache]: Analyzing trace with hash 625969832, now seen corresponding path program 1 times [2020-10-14 23:50:05,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:05,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994553236] [2020-10-14 23:50:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:05,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:05,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:05,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:50:05,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-14 23:50:05,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:05,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:50:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:50:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:05,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:05,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:50:05,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:05,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:05,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994553236] [2020-10-14 23:50:05,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:05,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:50:05,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366821794] [2020-10-14 23:50:05,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:50:05,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:05,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:50:05,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:50:05,710 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-10-14 23:50:09,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:09,979 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-14 23:50:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:50:09,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 23:50:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:09,981 INFO L225 Difference]: With dead ends: 40 [2020-10-14 23:50:09,981 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 23:50:09,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 23:50:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-10-14 23:50:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 23:50:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-14 23:50:09,997 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-10-14 23:50:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:09,998 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-14 23:50:09,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:50:09,998 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-14 23:50:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:50:09,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:10,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:10,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:50:10,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:10,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1878874992, now seen corresponding path program 2 times [2020-10-14 23:50:10,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:10,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605577671] [2020-10-14 23:50:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:11,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:11,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:50:11,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:50:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-14 23:50:11,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:11,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:50:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:50:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:50:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:11,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:50:11,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:11,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:11,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605577671] [2020-10-14 23:50:11,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:11,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:50:11,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188671693] [2020-10-14 23:50:11,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:50:11,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:50:11,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:50:11,373 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-10-14 23:50:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:17,637 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-10-14 23:50:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:50:17,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-14 23:50:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:17,639 INFO L225 Difference]: With dead ends: 46 [2020-10-14 23:50:17,639 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 23:50:17,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:50:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 23:50:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-14 23:50:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:50:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-14 23:50:17,647 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-10-14 23:50:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:17,648 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-14 23:50:17,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:50:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-14 23:50:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:50:17,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:17,649 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:17,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:50:17,650 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:17,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1460832712, now seen corresponding path program 3 times [2020-10-14 23:50:17,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:17,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459184149] [2020-10-14 23:50:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:21,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:21,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:50:21,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:50:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3647 [2020-10-14 23:50:21,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:21,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:50:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:50:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:21,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:50:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:21,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:21,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459184149] [2020-10-14 23:50:21,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:21,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:50:21,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997227364] [2020-10-14 23:50:21,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:50:21,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:21,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:50:21,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:50:21,471 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 8 states. [2020-10-14 23:50:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:29,786 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-10-14 23:50:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:50:29,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 23:50:29,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:29,788 INFO L225 Difference]: With dead ends: 52 [2020-10-14 23:50:29,789 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:50:29,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:50:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:50:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-10-14 23:50:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 23:50:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-14 23:50:29,797 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 31 [2020-10-14 23:50:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:29,798 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-14 23:50:29,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:50:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-14 23:50:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:50:29,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:29,799 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:29,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:50:29,800 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:29,800 INFO L82 PathProgramCache]: Analyzing trace with hash 599808768, now seen corresponding path program 4 times [2020-10-14 23:50:29,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:29,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601652409] [2020-10-14 23:50:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:30,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:35,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:35,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:50:35,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:50:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5784 [2020-10-14 23:50:35,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:35,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:50:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:50:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:35,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:35,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:35,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:50:35,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:35,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:50:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:50:35,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601652409] [2020-10-14 23:50:35,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:35,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:50:35,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114700794] [2020-10-14 23:50:35,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:50:35,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:35,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:50:35,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:35,771 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2020-10-14 23:50:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:46,130 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-10-14 23:50:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:50:46,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-14 23:50:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:46,133 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:50:46,133 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:50:46,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:50:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:50:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 23:50:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:50:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-14 23:50:46,151 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 37 [2020-10-14 23:50:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:46,151 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-14 23:50:46,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:50:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-14 23:50:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:50:46,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:50:46,152 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:50:46,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:50:46,153 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:50:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:50:46,153 INFO L82 PathProgramCache]: Analyzing trace with hash 431393224, now seen corresponding path program 5 times [2020-10-14 23:50:46,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:50:46,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864955911] [2020-10-14 23:50:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:50:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:50:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:50:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 23:50:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:50:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:50:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:50:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:50:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:50:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:50:51,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:50:51,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:50:51,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:50:51,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:50:51,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:50:51,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:50:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:50:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:50:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:50:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:50:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 23:50:51,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864955911] [2020-10-14 23:50:51,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:50:51,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:50:51,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537047319] [2020-10-14 23:50:51,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:50:51,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:50:51,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:50:51,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:50:51,409 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2020-10-14 23:50:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:50:57,803 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-14 23:50:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:50:57,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-14 23:50:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:50:57,806 INFO L225 Difference]: With dead ends: 50 [2020-10-14 23:50:57,806 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:50:57,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:50:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:50:57,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:50:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:50:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:50:57,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-10-14 23:50:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:50:57,809 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:50:57,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:50:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:50:57,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:50:57,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:50:57,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:50:58,100 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2020-10-14 23:50:58,192 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:50:58,193 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |#t~string44.offset| |old(#t~string44.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string44.base| |old(#t~string44.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-14 23:50:58,193 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:50:58,193 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:50:58,193 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2020-10-14 23:50:58,194 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:50:58,194 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:50:58,194 INFO L268 CegarLoopResult]: For program point L159(lines 159 222) no Hoare annotation was computed. [2020-10-14 23:50:58,194 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 131 223) no Hoare annotation was computed. [2020-10-14 23:50:58,194 INFO L268 CegarLoopResult]: For program point L180(lines 180 215) no Hoare annotation was computed. [2020-10-14 23:50:58,194 INFO L268 CegarLoopResult]: For program point L178(lines 178 220) no Hoare annotation was computed. [2020-10-14 23:50:58,194 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 131 223) no Hoare annotation was computed. [2020-10-14 23:50:58,194 INFO L268 CegarLoopResult]: For program point L197(lines 197 207) no Hoare annotation was computed. [2020-10-14 23:50:58,195 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2020-10-14 23:50:58,195 INFO L268 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-10-14 23:50:58,195 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 131 223) the Hoare annotation is: (or (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (not (= |old(~Id_MCDC_93~0)| 0))) [2020-10-14 23:50:58,195 INFO L268 CegarLoopResult]: For program point L189(lines 189 208) no Hoare annotation was computed. [2020-10-14 23:50:58,195 INFO L264 CegarLoopResult]: At program point L214(lines 180 215) the Hoare annotation is: (let ((.cse0 (<= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0)) (.cse1 (not (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 0))) (.cse2 (<= main_~Id_MCDC_89__Id_MCDC_96~0 ~Id_MCDC_93~0)) (.cse3 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (and .cse0 .cse1 (<= ~Id_MCDC_93~0 2) .cse2 (<= 0 main_~Id_MCDC_89__Id_MCDC_96~0) .cse3) (and (<= (+ (* 4294967296 (div (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967254) 4294967296)) 1) main_~Id_MCDC_89__Id_MCDC_96~0) .cse0 .cse1 .cse2 .cse3))) [2020-10-14 23:50:58,196 INFO L264 CegarLoopResult]: At program point L202(lines 165 221) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (and (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse0) (and (<= (+ (* 4294967296 (div (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967254) 4294967296)) 1) main_~Id_MCDC_89__Id_MCDC_96~0) (<= ~Id_MCDC_93~0 (+ (* 4294967296 (div ~Id_MCDC_93~0 4294967296)) 41)) (not (= main_~__VERIFIER_assert__Id_MCDC_92~0 0)) .cse0))) [2020-10-14 23:50:58,209 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,210 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,217 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,219 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,219 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,220 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,220 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:50:58 BoogieIcfgContainer [2020-10-14 23:50:58,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:50:58,225 INFO L168 Benchmark]: Toolchain (without parser) took 62881.96 ms. Allocated memory was 147.8 MB in the beginning and 604.0 MB in the end (delta: 456.1 MB). Free memory was 102.0 MB in the beginning and 545.9 MB in the end (delta: -443.9 MB). Peak memory consumption was 439.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:50:58,226 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:50:58,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 575.57 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.0 MB in the beginning and 176.6 MB in the end (delta: -74.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:50:58,228 INFO L168 Benchmark]: Boogie Preprocessor took 78.97 ms. Allocated memory is still 205.0 MB. Free memory was 176.6 MB in the beginning and 172.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:50:58,229 INFO L168 Benchmark]: RCFGBuilder took 2913.22 ms. Allocated memory is still 205.0 MB. Free memory was 172.7 MB in the beginning and 99.9 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:50:58,230 INFO L168 Benchmark]: TraceAbstraction took 59307.98 ms. Allocated memory was 205.0 MB in the beginning and 604.0 MB in the end (delta: 399.0 MB). Free memory was 99.9 MB in the beginning and 545.9 MB in the end (delta: -446.0 MB). Peak memory consumption was 379.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:50:58,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 575.57 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.0 MB in the beginning and 176.6 MB in the end (delta: -74.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.97 ms. Allocated memory is still 205.0 MB. Free memory was 176.6 MB in the beginning and 172.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2913.22 ms. Allocated memory is still 205.0 MB. Free memory was 172.7 MB in the beginning and 99.9 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 59307.98 ms. Allocated memory was 205.0 MB in the beginning and 604.0 MB in the end (delta: 399.0 MB). Free memory was 99.9 MB in the beginning and 545.9 MB in the end (delta: -446.0 MB). Peak memory consumption was 379.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 191]: 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: 180]: Loop Invariant [2020-10-14 23:50:58,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,248 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(\old(Id_MCDC_93) == 0) || (((((Id_MCDC_93 <= Id_MCDC_89__Id_MCDC_96 && !(Id_MCDC_89____CPAchecker_TMP_1 == 0)) && Id_MCDC_93 <= 2) && Id_MCDC_89__Id_MCDC_96 <= Id_MCDC_93) && 0 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || ((((4294967296 * ((Id_MCDC_89__Id_MCDC_96 + 4294967254) / 4294967296) + 1 <= Id_MCDC_89__Id_MCDC_96 && Id_MCDC_93 <= Id_MCDC_89__Id_MCDC_96) && !(Id_MCDC_89____CPAchecker_TMP_1 == 0)) && Id_MCDC_89__Id_MCDC_96 <= Id_MCDC_93) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - InvariantResult [Line: 165]: Loop Invariant [2020-10-14 23:50:58,249 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,249 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,250 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 23:50:58,250 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(\old(Id_MCDC_93) == 0) || ((Id_MCDC_93 == 0 && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || (((4294967296 * ((Id_MCDC_89__Id_MCDC_96 + 4294967254) / 4294967296) + 1 <= Id_MCDC_89__Id_MCDC_96 && Id_MCDC_93 <= 4294967296 * (Id_MCDC_93 / 4294967296) + 41) && !(__VERIFIER_assert__Id_MCDC_92 == 0)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 58.8s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 129 SDslu, 228 SDs, 0 SdLazy, 549 SolverSat, 59 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 38.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 25 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 17 NumberOfFragments, 173 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1924 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 280 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.0s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 36276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 86/195 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...