/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:17:34,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:17:34,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:17:34,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:17:34,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:17:34,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:17:34,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:17:34,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:17:34,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:17:34,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:17:34,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:17:34,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:17:34,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:17:34,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:17:34,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:17:34,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:17:34,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:17:34,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:17:34,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:17:34,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:17:34,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:17:34,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:17:34,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:17:34,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:17:34,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:17:34,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:17:34,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:17:34,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:17:34,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:17:34,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:17:34,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:17:34,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:17:34,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:17:34,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:17:34,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:17:34,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:17:34,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:17:34,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:17:34,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:17:34,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:17:34,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:17:34,283 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 05:17:34,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:17:34,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:17:34,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:17:34,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:17:34,326 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:17:34,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:17:34,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:17:34,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:17:34,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:17:34,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:17:34,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:17:34,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:17:34,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:17:34,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:17:34,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:17:34,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:17:34,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:17:34,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:17:34,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:17:34,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:17:34,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:17:34,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:17:34,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:17:34,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:17:34,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:17:34,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:17:34,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:17:34,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:17:34,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:17:34,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:17:34,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:17:34,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:17:34,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:17:34,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:17:34,643 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:17:34,644 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2020-10-14 05:17:34,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b81ab1bdd/477c7399bb844f64af572cf263a88741/FLAG253f62c55 [2020-10-14 05:17:35,176 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:17:35,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2020-10-14 05:17:35,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b81ab1bdd/477c7399bb844f64af572cf263a88741/FLAG253f62c55 [2020-10-14 05:17:35,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b81ab1bdd/477c7399bb844f64af572cf263a88741 [2020-10-14 05:17:35,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:17:35,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:17:35,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:17:35,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:17:35,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:17:35,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:35" (1/1) ... [2020-10-14 05:17:35,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27048747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:35, skipping insertion in model container [2020-10-14 05:17:35,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:35" (1/1) ... [2020-10-14 05:17:35,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:17:35,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:17:36,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:17:36,041 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:17:36,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:17:36,134 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:17:36,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36 WrapperNode [2020-10-14 05:17:36,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:17:36,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:17:36,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:17:36,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:17:36,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (1/1) ... [2020-10-14 05:17:36,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (1/1) ... [2020-10-14 05:17:36,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (1/1) ... [2020-10-14 05:17:36,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (1/1) ... [2020-10-14 05:17:36,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (1/1) ... [2020-10-14 05:17:36,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (1/1) ... [2020-10-14 05:17:36,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (1/1) ... [2020-10-14 05:17:36,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:17:36,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:17:36,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:17:36,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:17:36,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (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 05:17:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:17:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:17:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:17:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:17:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-10-14 05:17:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-14 05:17:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:17:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:17:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:17:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:17:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:17:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-14 05:17:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:17:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:17:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:17:36,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:17:36,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:17:39,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:17:39,007 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 05:17:39,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:39 BoogieIcfgContainer [2020-10-14 05:17:39,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:17:39,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:17:39,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:17:39,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:17:39,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:17:35" (1/3) ... [2020-10-14 05:17:39,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186f6810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:39, skipping insertion in model container [2020-10-14 05:17:39,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36" (2/3) ... [2020-10-14 05:17:39,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186f6810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:39, skipping insertion in model container [2020-10-14 05:17:39,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:39" (3/3) ... [2020-10-14 05:17:39,019 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2020-10-14 05:17:39,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:17:39,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:17:39,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:17:39,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:17:39,073 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:17:39,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:17:39,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:17:39,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:17:39,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:17:39,074 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:17:39,074 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:17:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 05:17:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:17:39,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:39,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:39,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash 316900320, now seen corresponding path program 1 times [2020-10-14 05:17:39,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:39,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324749170] [2020-10-14 05:17:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:39,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:39,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:17:39,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-14 05:17:39,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:39,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:17:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:17:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:17:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:17:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:39,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:40,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:40,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:40,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:40,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:17:40,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:40,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:40,016 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 05:17:40,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324749170] [2020-10-14 05:17:40,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:17:40,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:17:40,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058566916] [2020-10-14 05:17:40,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:17:40,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:40,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:17:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:17:40,041 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-10-14 05:17:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:42,219 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-14 05:17:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:17:42,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 05:17:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:42,230 INFO L225 Difference]: With dead ends: 46 [2020-10-14 05:17:42,230 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:17:42,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:17:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:17:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-10-14 05:17:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:17:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-14 05:17:42,271 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-14 05:17:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:42,271 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-14 05:17:42,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:17:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-14 05:17:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:17:42,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:42,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:42,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:17:42,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:42,274 INFO L82 PathProgramCache]: Analyzing trace with hash 316483246, now seen corresponding path program 1 times [2020-10-14 05:17:42,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:42,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743770686] [2020-10-14 05:17:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:42,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:42,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:17:42,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 05:17:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:42,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:17:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:17:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:17:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:42,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:42,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:42,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:42,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:42,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:17:42,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:42,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:42,666 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 05:17:42,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743770686] [2020-10-14 05:17:42,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:17:42,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:17:42,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985993263] [2020-10-14 05:17:42,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:17:42,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:42,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:17:42,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:17:42,670 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-10-14 05:17:44,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:44,785 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-14 05:17:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:17:44,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 05:17:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:44,787 INFO L225 Difference]: With dead ends: 25 [2020-10-14 05:17:44,787 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 05:17:44,788 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 05:17:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 05:17:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-10-14 05:17:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 05:17:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-14 05:17:44,798 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-10-14 05:17:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:44,798 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-14 05:17:44,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:17:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-14 05:17:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:17:44,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:44,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:44,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:17:44,801 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:44,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:44,801 INFO L82 PathProgramCache]: Analyzing trace with hash 625969832, now seen corresponding path program 1 times [2020-10-14 05:17:44,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:44,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269624341] [2020-10-14 05:17:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:44,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:17:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 05:17:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:45,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:17:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:17:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:17:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:45,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:45,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:17:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:45,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:45,403 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 05:17:45,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269624341] [2020-10-14 05:17:45,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:17:45,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:17:45,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804905888] [2020-10-14 05:17:45,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:17:45,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:17:45,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:17:45,405 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-10-14 05:17:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:49,609 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-14 05:17:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:17:49,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 05:17:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:49,611 INFO L225 Difference]: With dead ends: 40 [2020-10-14 05:17:49,611 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 05:17:49,612 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 05:17:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 05:17:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-10-14 05:17:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 05:17:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-14 05:17:49,627 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-10-14 05:17:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:49,628 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-14 05:17:49,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:17:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-14 05:17:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:17:49,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:49,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:49,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:17:49,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:49,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1878874992, now seen corresponding path program 2 times [2020-10-14 05:17:49,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:49,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399529793] [2020-10-14 05:17:49,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:50,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:17:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:17:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-14 05:17:50,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:50,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:17:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:17:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:17:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:17:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:50,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:50,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:50,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:17:50,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:50,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:50,994 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 05:17:50,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399529793] [2020-10-14 05:17:50,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:17:50,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:17:50,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469160209] [2020-10-14 05:17:50,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:17:50,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:50,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:17:51,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:17:51,008 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-10-14 05:17:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:57,272 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-10-14 05:17:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:17:57,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-14 05:17:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:57,274 INFO L225 Difference]: With dead ends: 46 [2020-10-14 05:17:57,274 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 05:17:57,275 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 05:17:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 05:17:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-14 05:17:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 05:17:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-14 05:17:57,285 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-10-14 05:17:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:57,285 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-14 05:17:57,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:17:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-14 05:17:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:17:57,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:57,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:57,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:17:57,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:57,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1460832712, now seen corresponding path program 3 times [2020-10-14 05:17:57,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:57,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232876429] [2020-10-14 05:17:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:00,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:18:00,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 05:18:00,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:18:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2792 [2020-10-14 05:18:00,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:18:00,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:18:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:18:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:18:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:18:00,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:18:00,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:18:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:18:00,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:00,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:18:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:18:00,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:18:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:18:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:18:00,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:18:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:18:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:18:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:18:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:18:00,248 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 05:18:00,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232876429] [2020-10-14 05:18:00,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:18:00,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:18:00,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283000400] [2020-10-14 05:18:00,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:18:00,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:18:00,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:18:00,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:18:00,250 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 8 states. [2020-10-14 05:18:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:18:08,560 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-10-14 05:18:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:18:08,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 05:18:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:18:08,563 INFO L225 Difference]: With dead ends: 52 [2020-10-14 05:18:08,563 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:18:08,564 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 05:18:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:18:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-10-14 05:18:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 05:18:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-14 05:18:08,576 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 31 [2020-10-14 05:18:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:18:08,577 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-14 05:18:08,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:18:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-14 05:18:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:18:08,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:18:08,579 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:18:08,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:18:08,580 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:18:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:18:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash 599808768, now seen corresponding path program 4 times [2020-10-14 05:18:08,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:18:08,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642982703] [2020-10-14 05:18:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:18:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:18:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:13,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:18:13,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:18:13,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:18:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 05:18:13,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:18:13,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:18:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:18:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:18:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:18:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:18:13,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:18:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:18:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:13,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:18:13,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:18:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:18:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:18:13,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:18:13,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:18:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:18:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:18:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:18:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:18:13,806 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 05:18:13,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642982703] [2020-10-14 05:18:13,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:18:13,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:18:13,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686931534] [2020-10-14 05:18:13,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:18:13,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:18:13,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:18:13,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:18:13,810 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2020-10-14 05:18:24,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:18:24,186 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-10-14 05:18:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:18:24,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-14 05:18:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:18:24,190 INFO L225 Difference]: With dead ends: 58 [2020-10-14 05:18:24,190 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:18:24,192 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 05:18:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:18:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 05:18:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:18:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-14 05:18:24,205 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 37 [2020-10-14 05:18:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:18:24,207 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-14 05:18:24,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:18:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-14 05:18:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:18:24,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:18:24,210 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:18:24,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:18:24,211 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:18:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:18:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash 431393224, now seen corresponding path program 5 times [2020-10-14 05:18:24,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:18:24,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619104656] [2020-10-14 05:18:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:18:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:18:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:29,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:18:29,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:18:29,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:18:29,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 05:18:29,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:18:29,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:18:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:18:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:18:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:18:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:18:29,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:18:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:18:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:18:29,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:18:29,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:18:29,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:18:29,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:18:29,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:18:29,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:18:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:18:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:18:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:18:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:18:29,436 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 05:18:29,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619104656] [2020-10-14 05:18:29,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:18:29,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:18:29,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108298983] [2020-10-14 05:18:29,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:18:29,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:18:29,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:18:29,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:18:29,440 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2020-10-14 05:18:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:18:35,765 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-14 05:18:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:18:35,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-14 05:18:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:18:35,768 INFO L225 Difference]: With dead ends: 50 [2020-10-14 05:18:35,768 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:18:35,770 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 05:18:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:18:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:18:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:18:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:18:35,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-10-14 05:18:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:18:35,771 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:18:35,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:18:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:18:35,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:18:35,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:18:35,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:18:36,127 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:18:36,128 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 05:18:36,128 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:18:36,128 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:18:36,128 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2020-10-14 05:18:36,128 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:18:36,128 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:18:36,129 INFO L268 CegarLoopResult]: For program point L159(lines 159 222) no Hoare annotation was computed. [2020-10-14 05:18:36,129 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 131 223) no Hoare annotation was computed. [2020-10-14 05:18:36,129 INFO L268 CegarLoopResult]: For program point L180(lines 180 215) no Hoare annotation was computed. [2020-10-14 05:18:36,129 INFO L268 CegarLoopResult]: For program point L178(lines 178 220) no Hoare annotation was computed. [2020-10-14 05:18:36,129 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 131 223) no Hoare annotation was computed. [2020-10-14 05:18:36,129 INFO L268 CegarLoopResult]: For program point L197(lines 197 207) no Hoare annotation was computed. [2020-10-14 05:18:36,129 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2020-10-14 05:18:36,130 INFO L268 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-10-14 05:18:36,130 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 05:18:36,130 INFO L268 CegarLoopResult]: For program point L189(lines 189 208) no Hoare annotation was computed. [2020-10-14 05:18:36,130 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 05:18:36,130 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 05:18:36,142 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,143 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,149 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,150 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,151 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,151 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:18:36 BoogieIcfgContainer [2020-10-14 05:18:36,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:18:36,157 INFO L168 Benchmark]: Toolchain (without parser) took 60598.94 ms. Allocated memory was 145.8 MB in the beginning and 625.5 MB in the end (delta: 479.7 MB). Free memory was 101.2 MB in the beginning and 555.0 MB in the end (delta: -453.8 MB). Peak memory consumption was 496.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:18:36,158 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:18:36,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.61 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 174.3 MB in the end (delta: -73.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:18:36,160 INFO L168 Benchmark]: Boogie Preprocessor took 72.49 ms. Allocated memory is still 202.4 MB. Free memory was 174.3 MB in the beginning and 170.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:18:36,160 INFO L168 Benchmark]: RCFGBuilder took 2801.93 ms. Allocated memory is still 202.4 MB. Free memory was 170.2 MB in the beginning and 97.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:18:36,161 INFO L168 Benchmark]: TraceAbstraction took 57142.83 ms. Allocated memory was 202.4 MB in the beginning and 625.5 MB in the end (delta: 423.1 MB). Free memory was 97.7 MB in the beginning and 555.0 MB in the end (delta: -457.3 MB). Peak memory consumption was 436.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:18:36,165 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 576.61 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 174.3 MB in the end (delta: -73.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.49 ms. Allocated memory is still 202.4 MB. Free memory was 174.3 MB in the beginning and 170.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2801.93 ms. Allocated memory is still 202.4 MB. Free memory was 170.2 MB in the beginning and 97.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 57142.83 ms. Allocated memory was 202.4 MB in the beginning and 625.5 MB in the end (delta: 423.1 MB). Free memory was 97.7 MB in the beginning and 555.0 MB in the end (delta: -457.3 MB). Peak memory consumption was 436.2 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 05:18:36,173 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,173 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,174 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,174 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 05:18:36,175 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,175 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,175 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:18:36,176 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: 56.7s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 39.8s, 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, 38.8s 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, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 280 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 16.2s 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...