/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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 09:12:19,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:12:19,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:12:19,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:12:19,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:12:19,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:12:19,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:12:19,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:12:19,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:12:19,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:12:19,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:12:19,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:12:19,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:12:19,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:12:19,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:12:19,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:12:19,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:12:19,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:12:19,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:12:19,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:12:19,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:12:19,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:12:19,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:12:19,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:12:19,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:12:19,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:12:19,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:12:19,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:12:19,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:12:19,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:12:19,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:12:19,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:12:19,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:12:19,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:12:19,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:12:19,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:12:19,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:12:19,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:12:19,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:12:19,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:12:19,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:12:19,714 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 09:12:19,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:12:19,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:12:19,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:12:19,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:12:19,742 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:12:19,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:12:19,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:12:19,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:12:19,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:12:19,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:12:19,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:12:19,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:12:19,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:12:19,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:12:19,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:12:19,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:12:19,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:12:19,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:12:19,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:12:19,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:12:19,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:12:19,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:12:19,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:12:19,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:12:19,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:12:19,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:12:19,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:12:19,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:12:19,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:12:19,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:12:20,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:12:20,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:12:20,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:12:20,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:12:20,260 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:12:20,261 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 09:12:20,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514c846dd/daac81cd1e424b60bd908ce127119793/FLAG63fb1407f [2020-09-25 09:12:20,837 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:12:20,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-25 09:12:20,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514c846dd/daac81cd1e424b60bd908ce127119793/FLAG63fb1407f [2020-09-25 09:12:21,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/514c846dd/daac81cd1e424b60bd908ce127119793 [2020-09-25 09:12:21,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:12:21,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:12:21,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:12:21,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:12:21,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:12:21,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21, skipping insertion in model container [2020-09-25 09:12:21,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:12:21,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:12:21,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:12:21,563 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:12:21,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:12:21,610 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:12:21,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21 WrapperNode [2020-09-25 09:12:21,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:12:21,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:12:21,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:12:21,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:12:21,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (1/1) ... [2020-09-25 09:12:21,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:12:21,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:12:21,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:12:21,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:12:21,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (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 09:12:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:12:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:12:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:12:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:12:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:12:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:12:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:12:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:12:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:12:22,091 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:12:22,092 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 09:12:22,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:12:22 BoogieIcfgContainer [2020-09-25 09:12:22,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:12:22,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:12:22,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:12:22,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:12:22,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:12:21" (1/3) ... [2020-09-25 09:12:22,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd3bd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:12:22, skipping insertion in model container [2020-09-25 09:12:22,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:12:21" (2/3) ... [2020-09-25 09:12:22,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd3bd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:12:22, skipping insertion in model container [2020-09-25 09:12:22,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:12:22" (3/3) ... [2020-09-25 09:12:22,108 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-09-25 09:12:22,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:12:22,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:12:22,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:12:22,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:12:22,196 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:12:22,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:12:22,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:12:22,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:12:22,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:12:22,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:12:22,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:12:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-25 09:12:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 09:12:22,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:22,229 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 09:12:22,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:22,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1562147583, now seen corresponding path program 1 times [2020-09-25 09:12:22,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:22,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401975239] [2020-09-25 09:12:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:12:22,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 09:12:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:12:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:12:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 09:12:22,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:12:22,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:22,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:22,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:12:22,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:22,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:22,764 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 09:12:22,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401975239] [2020-09-25 09:12:22,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:12:22,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 09:12:22,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134911287] [2020-09-25 09:12:22,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 09:12:22,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:22,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 09:12:22,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 09:12:22,807 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-25 09:12:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:22,915 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2020-09-25 09:12:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 09:12:22,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 09:12:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:22,943 INFO L225 Difference]: With dead ends: 105 [2020-09-25 09:12:22,944 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 09:12:22,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 09:12:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 09:12:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-09-25 09:12:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:12:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-25 09:12:23,021 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2020-09-25 09:12:23,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:23,023 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-25 09:12:23,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 09:12:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-25 09:12:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 09:12:23,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:23,025 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 09:12:23,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:12:23,026 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:23,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:23,027 INFO L82 PathProgramCache]: Analyzing trace with hash 42061886, now seen corresponding path program 1 times [2020-09-25 09:12:23,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:23,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125969808] [2020-09-25 09:12:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:23,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:12:23,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:12:23,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 09:12:23,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:23,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:12:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:12:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:12:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:12:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:23,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:23,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:23,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:23,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:23,661 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 09:12:23,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125969808] [2020-09-25 09:12:23,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:23,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:12:23,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223346135] [2020-09-25 09:12:23,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:12:23,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:23,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:12:23,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:12:23,665 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 7 states. [2020-09-25 09:12:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:23,791 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-25 09:12:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:12:23,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 09:12:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:23,794 INFO L225 Difference]: With dead ends: 92 [2020-09-25 09:12:23,795 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 09:12:23,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:12:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 09:12:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 51. [2020-09-25 09:12:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 09:12:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-09-25 09:12:23,807 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 27 [2020-09-25 09:12:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:23,808 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-09-25 09:12:23,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:12:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-09-25 09:12:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 09:12:23,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:23,810 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 09:12:23,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:12:23,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:23,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2023869189, now seen corresponding path program 2 times [2020-09-25 09:12:23,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:23,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156721201] [2020-09-25 09:12:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:24,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:12:24,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:12:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-25 09:12:24,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:24,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:12:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:12:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:12:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:24,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:24,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:24,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:24,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:24,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:24,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:24,421 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 09:12:24,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156721201] [2020-09-25 09:12:24,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:24,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:12:24,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240021671] [2020-09-25 09:12:24,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:12:24,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:24,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:12:24,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:12:24,424 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 9 states. [2020-09-25 09:12:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:24,619 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-25 09:12:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:12:24,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-09-25 09:12:24,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:24,622 INFO L225 Difference]: With dead ends: 135 [2020-09-25 09:12:24,622 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 09:12:24,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:12:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 09:12:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 55. [2020-09-25 09:12:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 09:12:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-09-25 09:12:24,633 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 31 [2020-09-25 09:12:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:24,634 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-09-25 09:12:24,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:12:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-09-25 09:12:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 09:12:24,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:24,635 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 09:12:24,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:12:24,636 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:24,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:24,637 INFO L82 PathProgramCache]: Analyzing trace with hash -909118664, now seen corresponding path program 3 times [2020-09-25 09:12:24,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:24,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144643769] [2020-09-25 09:12:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:25,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:25,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 09:12:25,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:12:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-09-25 09:12:25,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:25,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:12:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:12:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:12:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:25,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:25,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:25,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:25,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:25,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:25,609 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 09:12:25,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144643769] [2020-09-25 09:12:25,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:25,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:12:25,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944224141] [2020-09-25 09:12:25,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:12:25,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:25,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:12:25,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:12:25,613 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 11 states. [2020-09-25 09:12:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:25,841 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-09-25 09:12:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:12:25,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-09-25 09:12:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:25,843 INFO L225 Difference]: With dead ends: 118 [2020-09-25 09:12:25,843 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 09:12:25,844 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 09:12:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 09:12:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-09-25 09:12:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 09:12:25,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-25 09:12:25,851 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2020-09-25 09:12:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:25,852 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-25 09:12:25,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:12:25,852 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-25 09:12:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 09:12:25,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:25,853 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 09:12:25,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:12:25,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:25,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:25,854 INFO L82 PathProgramCache]: Analyzing trace with hash -460436747, now seen corresponding path program 4 times [2020-09-25 09:12:25,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:25,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186002651] [2020-09-25 09:12:25,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:12:26,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:12:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-09-25 09:12:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:26,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:12:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:12:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:12:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:27,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:27,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:27,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:27,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:27,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:27,023 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 09:12:27,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186002651] [2020-09-25 09:12:27,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:27,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:12:27,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028011185] [2020-09-25 09:12:27,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:12:27,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:12:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:12:27,026 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-25 09:12:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:27,270 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-09-25 09:12:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:12:27,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-25 09:12:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:27,272 INFO L225 Difference]: With dead ends: 121 [2020-09-25 09:12:27,272 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 09:12:27,273 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 09:12:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 09:12:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-09-25 09:12:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 09:12:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-25 09:12:27,280 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2020-09-25 09:12:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:27,281 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-25 09:12:27,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:12:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-25 09:12:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 09:12:27,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:27,283 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 09:12:27,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:12:27,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1152416818, now seen corresponding path program 5 times [2020-09-25 09:12:27,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:27,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658253158] [2020-09-25 09:12:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:29,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 09:12:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:12:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-09-25 09:12:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:29,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 09:12:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:12:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 09:12:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:29,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:29,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:29,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:29,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:29,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:29,442 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 09:12:29,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658253158] [2020-09-25 09:12:29,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:29,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:12:29,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051905373] [2020-09-25 09:12:29,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:12:29,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:12:29,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:12:29,446 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 15 states. [2020-09-25 09:12:29,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:29,883 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-09-25 09:12:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 09:12:29,884 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-09-25 09:12:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:29,885 INFO L225 Difference]: With dead ends: 129 [2020-09-25 09:12:29,886 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 09:12:29,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-09-25 09:12:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 09:12:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-09-25 09:12:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 09:12:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 09:12:29,893 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2020-09-25 09:12:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:29,894 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 09:12:29,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:12:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 09:12:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 09:12:29,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:29,896 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 09:12:29,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:12:29,896 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431791, now seen corresponding path program 6 times [2020-09-25 09:12:29,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:29,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515571735] [2020-09-25 09:12:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:31,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:31,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 09:12:31,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:12:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-09-25 09:12:31,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:31,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 09:12:31,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:12:31,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:12:31,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:31,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:31,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:12:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:31,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:31,891 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 09:12:31,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515571735] [2020-09-25 09:12:31,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:31,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:12:31,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832061948] [2020-09-25 09:12:31,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:12:31,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:31,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:12:31,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:12:31,894 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-09-25 09:12:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:32,365 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2020-09-25 09:12:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:12:32,365 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-25 09:12:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:32,367 INFO L225 Difference]: With dead ends: 137 [2020-09-25 09:12:32,367 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 09:12:32,368 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 09:12:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 09:12:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-25 09:12:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 09:12:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-09-25 09:12:32,374 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 47 [2020-09-25 09:12:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:32,375 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-09-25 09:12:32,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:12:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-09-25 09:12:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 09:12:32,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:12:32,376 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 09:12:32,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:12:32,377 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:12:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:12:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash 90008364, now seen corresponding path program 7 times [2020-09-25 09:12:32,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:12:32,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807262475] [2020-09-25 09:12:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:12:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:33,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 09:12:33,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:12:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1598 [2020-09-25 09:12:33,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:33,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:12:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:12:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:12:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:36,584 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 22 [2020-09-25 09:12:36,756 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 27 [2020-09-25 09:12:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:12:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:12:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:12:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:12:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:12:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:12:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:12:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:12:36,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:12:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:12:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:12:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:12:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:12:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 09:12:36,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807262475] [2020-09-25 09:12:36,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:12:36,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:12:36,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017561898] [2020-09-25 09:12:36,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:12:36,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:12:36,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:12:36,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=1, NotChecked=0, Total=90 [2020-09-25 09:12:36,849 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 10 states. [2020-09-25 09:12:39,422 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-09-25 09:12:43,892 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2020-09-25 09:12:44,816 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-09-25 09:12:47,571 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-09-25 09:12:49,723 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (div c_main_~v~0 4294967296))) (and (let ((.cse2 (div c_main_~v~0 4))) (let ((.cse0 (div (+ c_main_~v~0 (* .cse2 (- 4))) 4294967296))) (or (<= c_main_~v~0 (+ (* 1073741824 .cse0) (* 3221225472 .cse1) .cse2 8)) (<= (+ (* 4294967296 .cse0) (* 4 .cse2) 3) c_main_~v~0)))) (<= 1 (+ c_main_~v~0 (* 4294967296 (div (let ((.cse3 (* c_main_~v~0 (- 1)))) (+ (* (div (+ .cse3 (- 23)) 4) (- 1)) .cse3 1)) 3221225472)))) (<= (+ (* 4294967296 .cse1) 10) c_main_~v~0))) is different from false [2020-09-25 09:12:49,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:12:49,801 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-09-25 09:12:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:12:49,802 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-09-25 09:12:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:12:49,803 INFO L225 Difference]: With dead ends: 83 [2020-09-25 09:12:49,803 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:12:49,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=65, Invalid=208, Unknown=3, NotChecked=30, Total=306 [2020-09-25 09:12:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:12:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:12:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:12:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:12:49,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-09-25 09:12:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:12:49,805 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:12:49,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:12:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:12:49,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:12:49,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:12:49,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 09:12:52,515 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 39 DAG size of output: 22 [2020-09-25 09:12:52,554 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 09:12:52,554 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:12:52,554 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:12:52,555 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 09:12:52,555 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 09:12:52,555 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 09:12:52,555 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-09-25 09:12:52,555 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 09:12:52,555 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-09-25 09:12:52,555 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 09:12:52,555 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 09:12:52,556 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 09:12:52,556 INFO L271 CegarLoopResult]: At program point L19-6(lines 19 23) the Hoare annotation is: true [2020-09-25 09:12:52,556 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 09:12:52,556 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 09:12:52,556 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 09:12:52,556 INFO L268 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-09-25 09:12:52,556 INFO L271 CegarLoopResult]: At program point L20-5(lines 20 23) the Hoare annotation is: true [2020-09-25 09:12:52,557 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 09:12:52,557 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 09:12:52,557 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 09:12:52,557 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 09:12:52,557 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-25 09:12:52,558 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (or (and (< 0 (+ (div main_~v~0 4294967296) 1)) (<= main_~v~0 0)) (<= 1 (+ main_~v~0 (* 4294967296 (div (let ((.cse0 (* main_~v~0 (- 1)))) (+ (* (div (+ .cse0 (- 23)) 4) (- 1)) .cse0 1)) 3221225472))))) [2020-09-25 09:12:52,558 INFO L264 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: (and (<= 1 (+ main_~v~0 (* 4294967296 (div (let ((.cse0 (* main_~v~0 (- 1)))) (+ (* (div (+ .cse0 (- 23)) 4) (- 1)) .cse0 1)) 3221225472)))) (<= (+ (* 4294967296 (div main_~v~0 4294967296)) 10) main_~v~0)) [2020-09-25 09:12:52,558 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2020-09-25 09:12:52,558 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 09:12:52,558 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 09:12:52,558 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-09-25 09:12:52,558 INFO L268 CegarLoopResult]: For program point L17-5(line 17) no Hoare annotation was computed. [2020-09-25 09:12:52,559 INFO L271 CegarLoopResult]: At program point L17-6(lines 17 23) the Hoare annotation is: true [2020-09-25 09:12:52,559 INFO L268 CegarLoopResult]: For program point L17-7(lines 17 23) no Hoare annotation was computed. [2020-09-25 09:12:52,559 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-09-25 09:12:52,559 INFO L268 CegarLoopResult]: For program point L22(lines 20 23) no Hoare annotation was computed. [2020-09-25 09:12:52,559 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 09:12:52,559 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 23) no Hoare annotation was computed. [2020-09-25 09:12:52,559 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 09:12:52,560 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 09:12:52,560 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-25 09:12:52,560 INFO L271 CegarLoopResult]: At program point L18-6(lines 18 23) the Hoare annotation is: true [2020-09-25 09:12:52,560 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 09:12:52,560 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 09:12:52,560 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 09:12:52,560 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 09:12:52,561 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 09:12:52,561 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 09:12:52,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:12:52 BoogieIcfgContainer [2020-09-25 09:12:52,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:12:52,586 INFO L168 Benchmark]: Toolchain (without parser) took 31381.27 ms. Allocated memory was 112.7 MB in the beginning and 308.8 MB in the end (delta: 196.1 MB). Free memory was 70.8 MB in the beginning and 284.7 MB in the end (delta: -213.9 MB). Peak memory consumption was 166.5 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:52,587 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 112.7 MB. Free memory was 88.2 MB in the beginning and 88.1 MB in the end (delta: 105.2 kB). Peak memory consumption was 105.2 kB. Max. memory is 7.1 GB. [2020-09-25 09:12:52,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.66 ms. Allocated memory was 112.7 MB in the beginning and 129.5 MB in the end (delta: 16.8 MB). Free memory was 70.2 MB in the beginning and 99.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:52,589 INFO L168 Benchmark]: Boogie Preprocessor took 118.34 ms. Allocated memory was 129.5 MB in the beginning and 155.7 MB in the end (delta: 26.2 MB). Free memory was 99.2 MB in the beginning and 142.0 MB in the end (delta: -42.8 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:52,590 INFO L168 Benchmark]: RCFGBuilder took 367.38 ms. Allocated memory is still 155.7 MB. Free memory was 142.0 MB in the beginning and 127.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:52,591 INFO L168 Benchmark]: TraceAbstraction took 30484.63 ms. Allocated memory was 155.7 MB in the beginning and 308.8 MB in the end (delta: 153.1 MB). Free memory was 126.9 MB in the beginning and 284.7 MB in the end (delta: -157.8 MB). Peak memory consumption was 179.6 MB. Max. memory is 7.1 GB. [2020-09-25 09:12:52,595 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 112.7 MB. Free memory was 88.2 MB in the beginning and 88.1 MB in the end (delta: 105.2 kB). Peak memory consumption was 105.2 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 398.66 ms. Allocated memory was 112.7 MB in the beginning and 129.5 MB in the end (delta: 16.8 MB). Free memory was 70.2 MB in the beginning and 99.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.34 ms. Allocated memory was 129.5 MB in the beginning and 155.7 MB in the end (delta: 26.2 MB). Free memory was 99.2 MB in the beginning and 142.0 MB in the end (delta: -42.8 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.38 ms. Allocated memory is still 155.7 MB. Free memory was 142.0 MB in the beginning and 127.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30484.63 ms. Allocated memory was 155.7 MB in the beginning and 308.8 MB in the end (delta: 153.1 MB). Free memory was 126.9 MB in the beginning and 284.7 MB in the end (delta: -157.8 MB). Peak memory consumption was 179.6 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: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (0 < v / 4294967296 + 1 && v <= 0) || 1 <= v + 4294967296 * (((v * -1 + -23) / 4 * -1 + v * -1 + 1) / 3221225472) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.6s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 388 SDtfs, 298 SDslu, 2691 SDs, 0 SdLazy, 972 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 173 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 19 PreInvPairs, 36 NumberOfFragments, 75 HoareAnnotationTreeSize, 19 FomulaSimplifications, 228 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 51622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 87/252 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...