/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:06:38,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:06:38,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:06:38,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:06:38,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:06:38,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:06:38,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:06:38,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:06:38,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:06:38,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:06:38,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:06:38,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:06:38,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:06:38,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:06:38,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:06:38,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:06:38,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:06:38,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:06:38,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:06:38,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:06:38,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:06:38,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:06:38,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:06:38,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:06:38,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:06:38,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:06:38,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:06:38,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:06:38,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:06:38,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:06:38,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:06:38,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:06:38,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:06:38,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:06:38,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:06:38,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:06:38,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:06:38,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:06:38,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:06:38,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:06:38,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:06:38,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:06:38,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:06:38,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:06:38,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:06:38,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:06:38,392 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:06:38,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:06:38,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:06:38,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:06:38,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:06:38,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:06:38,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:06:38,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:06:38,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:06:38,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:06:38,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:06:38,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:06:38,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:06:38,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:06:38,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:06:38,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:06:38,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:06:38,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:06:38,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:06:38,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:06:38,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:06:38,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:06:38,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:06:38,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:06:38,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:06:38,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:06:38,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:06:38,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:06:38,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:06:38,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:06:38,924 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:06:38,925 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 00:06:39,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1fbbfa7/54725015f37c4739bbced2cd1647dfe0/FLAG38a2a57cf [2020-09-25 00:06:39,568 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:06:39,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 00:06:39,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1fbbfa7/54725015f37c4739bbced2cd1647dfe0/FLAG38a2a57cf [2020-09-25 00:06:39,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1fbbfa7/54725015f37c4739bbced2cd1647dfe0 [2020-09-25 00:06:39,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:06:39,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:06:39,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:06:39,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:06:39,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:06:39,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:06:39" (1/1) ... [2020-09-25 00:06:39,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:39, skipping insertion in model container [2020-09-25 00:06:39,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:06:39" (1/1) ... [2020-09-25 00:06:39,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:06:39,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:06:40,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:06:40,266 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:06:40,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:06:40,302 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:06:40,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40 WrapperNode [2020-09-25 00:06:40,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:06:40,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:06:40,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:06:40,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:06:40,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... [2020-09-25 00:06:40,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... [2020-09-25 00:06:40,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... [2020-09-25 00:06:40,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... [2020-09-25 00:06:40,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... [2020-09-25 00:06:40,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... [2020-09-25 00:06:40,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... [2020-09-25 00:06:40,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:06:40,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:06:40,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:06:40,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:06:40,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:06:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:06:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:06:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:06:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:06:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:06:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:06:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:06:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:06:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:06:40,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:06:40,776 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 00:06:40,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:06:40 BoogieIcfgContainer [2020-09-25 00:06:40,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:06:40,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:06:40,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:06:40,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:06:40,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:06:39" (1/3) ... [2020-09-25 00:06:40,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f0207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:06:40, skipping insertion in model container [2020-09-25 00:06:40,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:40" (2/3) ... [2020-09-25 00:06:40,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f0207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:06:40, skipping insertion in model container [2020-09-25 00:06:40,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:06:40" (3/3) ... [2020-09-25 00:06:40,793 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-09-25 00:06:40,807 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:06:40,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:06:40,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:06:40,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:06:40,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:06:40,878 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:06:40,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:06:40,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:06:40,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:06:40,878 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:06:40,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:06:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-25 00:06:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 00:06:40,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:40,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:40,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:40,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1562147583, now seen corresponding path program 1 times [2020-09-25 00:06:40,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:40,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797985144] [2020-09-25 00:06:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:41,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:41,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:06:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 00:06:41,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:06:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:06:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:06:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:41,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:41,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:06:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:41,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:41,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:06:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:41,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797985144] [2020-09-25 00:06:41,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:06:41,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:06:41,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606990803] [2020-09-25 00:06:41,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:06:41,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:41,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:06:41,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:06:41,514 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-25 00:06:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:41,583 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2020-09-25 00:06:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:06:41,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 00:06:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:41,606 INFO L225 Difference]: With dead ends: 105 [2020-09-25 00:06:41,606 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 00:06:41,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:06:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 00:06:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-09-25 00:06:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:06:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-25 00:06:41,662 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2020-09-25 00:06:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:41,663 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-25 00:06:41,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:06:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-25 00:06:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 00:06:41,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:41,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:41,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:06:41,666 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:41,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:41,667 INFO L82 PathProgramCache]: Analyzing trace with hash 42061886, now seen corresponding path program 1 times [2020-09-25 00:06:41,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:41,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773329816] [2020-09-25 00:06:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 00:06:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:06:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 00:06:42,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:06:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:06:42,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:06:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:42,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:42,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:42,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:06:42,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:42,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773329816] [2020-09-25 00:06:42,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:42,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:06:42,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771570763] [2020-09-25 00:06:42,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:06:42,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:42,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:06:42,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:06:42,382 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 7 states. [2020-09-25 00:06:42,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:42,566 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-25 00:06:42,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:06:42,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 00:06:42,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:42,569 INFO L225 Difference]: With dead ends: 92 [2020-09-25 00:06:42,569 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 00:06:42,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:06:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 00:06:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 51. [2020-09-25 00:06:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 00:06:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-09-25 00:06:42,583 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 27 [2020-09-25 00:06:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:42,584 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-09-25 00:06:42,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:06:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-09-25 00:06:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 00:06:42,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:42,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:42,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:06:42,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2023869189, now seen corresponding path program 2 times [2020-09-25 00:06:42,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:42,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487019090] [2020-09-25 00:06:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:42,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:42,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:06:42,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:06:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-25 00:06:42,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:06:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:06:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:43,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:43,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:43,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:43,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:43,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:43,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487019090] [2020-09-25 00:06:43,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:43,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:06:43,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501447601] [2020-09-25 00:06:43,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:06:43,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:43,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:06:43,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:06:43,025 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 7 states. [2020-09-25 00:06:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:43,130 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2020-09-25 00:06:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:06:43,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-09-25 00:06:43,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:43,132 INFO L225 Difference]: With dead ends: 110 [2020-09-25 00:06:43,132 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 00:06:43,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:06:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 00:06:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-25 00:06:43,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 00:06:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 00:06:43,142 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 31 [2020-09-25 00:06:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:43,142 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 00:06:43,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:06:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 00:06:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:06:43,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:43,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:43,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:06:43,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:43,145 INFO L82 PathProgramCache]: Analyzing trace with hash -909118664, now seen corresponding path program 3 times [2020-09-25 00:06:43,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:43,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015057471] [2020-09-25 00:06:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:43,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 00:06:43,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:06:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-09-25 00:06:43,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:06:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:06:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:44,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:44,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:44,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015057471] [2020-09-25 00:06:44,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:44,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:06:44,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268731730] [2020-09-25 00:06:44,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:06:44,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:44,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:06:44,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:06:44,222 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 11 states. [2020-09-25 00:06:44,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:44,462 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-09-25 00:06:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:06:44,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-09-25 00:06:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:44,464 INFO L225 Difference]: With dead ends: 113 [2020-09-25 00:06:44,464 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 00:06:44,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:06:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 00:06:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-09-25 00:06:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 00:06:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-25 00:06:44,472 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2020-09-25 00:06:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:44,473 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-25 00:06:44,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:06:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-25 00:06:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 00:06:44,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:44,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:44,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:06:44,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -460436747, now seen corresponding path program 4 times [2020-09-25 00:06:44,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:44,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460465684] [2020-09-25 00:06:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:06:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:06:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-09-25 00:06:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:06:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:06:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:45,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:45,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:45,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:45,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460465684] [2020-09-25 00:06:45,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:45,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:06:45,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562053164] [2020-09-25 00:06:45,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:06:45,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:06:45,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:06:45,752 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-25 00:06:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:46,004 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-09-25 00:06:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:06:46,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-25 00:06:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:46,006 INFO L225 Difference]: With dead ends: 121 [2020-09-25 00:06:46,006 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 00:06:46,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:06:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 00:06:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-09-25 00:06:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 00:06:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-25 00:06:46,014 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2020-09-25 00:06:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:46,015 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-25 00:06:46,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:06:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-25 00:06:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 00:06:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:46,020 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:46,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:06:46,020 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1152416818, now seen corresponding path program 5 times [2020-09-25 00:06:46,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:46,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265254072] [2020-09-25 00:06:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:47,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:47,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 00:06:47,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:06:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1713 [2020-09-25 00:06:47,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:06:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:06:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:47,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:47,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:47,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:47,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265254072] [2020-09-25 00:06:47,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:47,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:06:47,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837308647] [2020-09-25 00:06:47,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:06:47,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:47,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:06:47,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:06:47,988 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 13 states. [2020-09-25 00:06:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:48,332 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-09-25 00:06:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:06:48,332 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-09-25 00:06:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:48,335 INFO L225 Difference]: With dead ends: 129 [2020-09-25 00:06:48,336 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 00:06:48,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:06:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 00:06:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-09-25 00:06:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 00:06:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 00:06:48,349 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2020-09-25 00:06:48,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:48,353 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 00:06:48,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:06:48,353 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 00:06:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:06:48,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:48,354 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:48,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:06:48,355 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:48,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:48,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431791, now seen corresponding path program 6 times [2020-09-25 00:06:48,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:48,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280037980] [2020-09-25 00:06:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:06:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:06:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1776 [2020-09-25 00:06:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:06:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:06:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:50,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:50,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:50,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:06:50,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:50,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280037980] [2020-09-25 00:06:50,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:50,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 00:06:50,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717882790] [2020-09-25 00:06:50,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 00:06:50,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:50,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 00:06:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:06:50,451 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-09-25 00:06:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:50,908 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2020-09-25 00:06:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 00:06:50,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-25 00:06:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:50,911 INFO L225 Difference]: With dead ends: 137 [2020-09-25 00:06:50,911 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 00:06:50,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:06:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 00:06:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-25 00:06:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 00:06:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-09-25 00:06:50,919 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 47 [2020-09-25 00:06:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:50,920 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-09-25 00:06:50,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 00:06:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-09-25 00:06:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 00:06:50,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:50,921 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:50,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:06:50,922 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:50,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:50,922 INFO L82 PathProgramCache]: Analyzing trace with hash 90008364, now seen corresponding path program 7 times [2020-09-25 00:06:50,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:50,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035628936] [2020-09-25 00:06:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:52,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:06:52,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:06:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1614 [2020-09-25 00:06:52,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 00:06:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:06:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:53,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:53,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:53,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:53,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:06:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:53,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035628936] [2020-09-25 00:06:53,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:53,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:06:53,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964958167] [2020-09-25 00:06:53,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:06:53,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:53,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:06:53,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:06:53,127 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 19 states. [2020-09-25 00:06:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:53,818 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-09-25 00:06:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 00:06:53,819 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-09-25 00:06:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:53,821 INFO L225 Difference]: With dead ends: 116 [2020-09-25 00:06:53,821 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 00:06:53,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 00:06:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 00:06:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2020-09-25 00:06:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 00:06:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 00:06:53,843 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 51 [2020-09-25 00:06:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:53,843 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 00:06:53,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:06:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 00:06:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 00:06:53,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:53,848 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:53,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:06:53,849 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:53,849 INFO L82 PathProgramCache]: Analyzing trace with hash 737585385, now seen corresponding path program 8 times [2020-09-25 00:06:53,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:53,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421253333] [2020-09-25 00:06:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:55,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:55,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 00:06:55,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:06:55,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-09-25 00:06:55,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:55,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 00:06:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 00:06:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:55,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:55,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:55,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:55,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421253333] [2020-09-25 00:06:55,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:55,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:06:55,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98207742] [2020-09-25 00:06:55,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:06:55,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:55,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:06:55,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:06:55,915 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 19 states. [2020-09-25 00:06:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:56,534 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2020-09-25 00:06:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 00:06:56,534 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-09-25 00:06:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:56,536 INFO L225 Difference]: With dead ends: 158 [2020-09-25 00:06:56,536 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 00:06:56,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 00:06:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 00:06:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-09-25 00:06:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 00:06:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-25 00:06:56,549 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 55 [2020-09-25 00:06:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:56,551 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-25 00:06:56,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:06:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-25 00:06:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 00:06:56,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:56,557 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:56,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:06:56,558 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:56,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:56,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1005535194, now seen corresponding path program 9 times [2020-09-25 00:06:56,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:56,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051886855] [2020-09-25 00:06:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:58,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:59,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:59,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 00:06:59,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:06:59,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-09-25 00:06:59,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 00:06:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:06:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:06:59,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:59,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:59,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:06:59,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:06:59,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:06:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:06:59,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051886855] [2020-09-25 00:06:59,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:06:59,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 00:06:59,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554623882] [2020-09-25 00:06:59,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 00:06:59,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:59,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 00:06:59,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:06:59,525 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 21 states. [2020-09-25 00:07:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:00,341 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-09-25 00:07:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 00:07:00,342 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-09-25 00:07:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:00,343 INFO L225 Difference]: With dead ends: 161 [2020-09-25 00:07:00,343 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 00:07:00,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 00:07:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 00:07:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 78. [2020-09-25 00:07:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 00:07:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-09-25 00:07:00,354 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 59 [2020-09-25 00:07:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:00,357 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-09-25 00:07:00,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 00:07:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-09-25 00:07:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:07:00,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:00,358 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:00,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:07:00,359 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:00,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:00,359 INFO L82 PathProgramCache]: Analyzing trace with hash 111341795, now seen corresponding path program 10 times [2020-09-25 00:07:00,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:00,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967208170] [2020-09-25 00:07:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:00,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:01,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:02,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:02,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:02,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 00:07:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:07:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2517 [2020-09-25 00:07:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 00:07:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:07:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 00:07:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:03,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:03,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:03,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:07:03,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:07:03,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:03,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967208170] [2020-09-25 00:07:03,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:07:03,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 00:07:03,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580308781] [2020-09-25 00:07:03,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 00:07:03,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:03,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 00:07:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:07:03,591 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 25 states. [2020-09-25 00:07:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:04,906 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-09-25 00:07:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 00:07:04,910 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2020-09-25 00:07:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:04,911 INFO L225 Difference]: With dead ends: 161 [2020-09-25 00:07:04,911 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:07:04,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 00:07:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:07:04,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:07:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:07:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:07:04,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-25 00:07:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:04,914 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:07:04,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 00:07:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:07:04,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:07:04,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:07:04,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:07:05,185 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2020-09-25 00:07:05,190 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:07:05,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:07:05,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:07:05,190 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:07:05,190 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:07:05,191 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:07:05,191 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-09-25 00:07:05,192 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 00:07:05,192 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-09-25 00:07:05,192 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:07:05,192 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 00:07:05,192 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 00:07:05,193 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 00:07:05,193 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 00:07:05,193 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 00:07:05,193 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:07:05,193 INFO L268 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-09-25 00:07:05,194 INFO L264 CegarLoopResult]: At program point L20-5(lines 20 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 00:07:05,194 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 00:07:05,194 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 00:07:05,194 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 00:07:05,194 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 00:07:05,195 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-25 00:07:05,196 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (or (and (<= main_~v~0 9) (<= 9 main_~v~0)) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= main_~v~0 8) (< 0 (+ (div main_~v~0 4294967296) 1)))) [2020-09-25 00:07:05,196 INFO L264 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) [2020-09-25 00:07:05,196 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2020-09-25 00:07:05,196 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 00:07:05,197 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 00:07:05,197 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-09-25 00:07:05,197 INFO L268 CegarLoopResult]: For program point L17-5(line 17) no Hoare annotation was computed. [2020-09-25 00:07:05,197 INFO L264 CegarLoopResult]: At program point L17-6(lines 17 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 00:07:05,197 INFO L268 CegarLoopResult]: For program point L17-7(lines 17 23) no Hoare annotation was computed. [2020-09-25 00:07:05,197 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-09-25 00:07:05,198 INFO L268 CegarLoopResult]: For program point L22(lines 20 23) no Hoare annotation was computed. [2020-09-25 00:07:05,198 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 00:07:05,198 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 23) no Hoare annotation was computed. [2020-09-25 00:07:05,198 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 00:07:05,198 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 00:07:05,198 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-25 00:07:05,198 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-25 00:07:05,199 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 00:07:05,199 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 00:07:05,199 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 00:07:05,199 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:07:05,199 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 00:07:05,200 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 00:07:05,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:07:05 BoogieIcfgContainer [2020-09-25 00:07:05,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:07:05,246 INFO L168 Benchmark]: Toolchain (without parser) took 25325.83 ms. Allocated memory was 137.9 MB in the beginning and 422.6 MB in the end (delta: 284.7 MB). Free memory was 100.9 MB in the beginning and 215.0 MB in the end (delta: -114.1 MB). Peak memory consumption was 170.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:07:05,247 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:07:05,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.30 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 90.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:07:05,254 INFO L168 Benchmark]: Boogie Preprocessor took 113.01 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 180.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:07:05,255 INFO L168 Benchmark]: RCFGBuilder took 364.32 ms. Allocated memory is still 200.3 MB. Free memory was 179.2 MB in the beginning and 164.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:07:05,257 INFO L168 Benchmark]: TraceAbstraction took 24459.65 ms. Allocated memory was 200.3 MB in the beginning and 422.6 MB in the end (delta: 222.3 MB). Free memory was 164.0 MB in the beginning and 215.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 171.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:07:05,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.30 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 90.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.01 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 180.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.32 ms. Allocated memory is still 200.3 MB. Free memory was 179.2 MB in the beginning and 164.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24459.65 ms. Allocated memory was 200.3 MB in the beginning and 422.6 MB in the end (delta: 222.3 MB). Free memory was 164.0 MB in the beginning and 215.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 171.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 17]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((v <= 9 && 9 <= v) || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v)) || (v <= 8 && 0 < v / 4294967296 + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.0s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 563 SDtfs, 514 SDslu, 5659 SDs, 0 SdLazy, 3135 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 230 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 22 PreInvPairs, 42 NumberOfFragments, 166 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 98824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 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...