/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:41:17,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:41:17,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:41:17,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:41:17,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:41:17,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:41:17,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:41:17,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:41:17,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:41:17,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:41:17,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:41:17,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:41:17,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:41:17,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:41:17,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:41:17,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:41:17,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:41:17,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:41:17,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:41:17,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:41:17,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:41:17,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:41:17,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:41:17,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:41:17,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:41:17,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:41:17,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:41:17,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:41:17,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:41:17,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:41:17,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:41:17,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:41:17,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:41:17,292 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:41:17,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:41:17,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:41:17,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:41:17,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:41:17,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:41:17,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:41:17,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:41:17,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:41:17,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:41:17,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:41:17,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:41:17,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:41:17,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:41:17,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:41:17,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:41:17,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:41:17,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:41:17,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:41:17,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:41:17,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:41:17,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:41:17,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:41:17,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:41:17,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:41:17,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:41:17,786 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:41:17,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2020-12-22 18:41:17,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72da5c206/ea00108d467f4dc19074e8768e2c5217/FLAG92abb8329 [2020-12-22 18:41:18,777 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:41:18,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2020-12-22 18:41:18,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72da5c206/ea00108d467f4dc19074e8768e2c5217/FLAG92abb8329 [2020-12-22 18:41:18,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72da5c206/ea00108d467f4dc19074e8768e2c5217 [2020-12-22 18:41:18,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:41:18,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:41:18,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:41:18,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:41:18,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:41:18,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:41:18" (1/1) ... [2020-12-22 18:41:18,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302d9717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:18, skipping insertion in model container [2020-12-22 18:41:18,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:41:18" (1/1) ... [2020-12-22 18:41:18,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:41:19,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:41:19,569 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2020-12-22 18:41:19,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:41:19,766 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:41:19,805 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2020-12-22 18:41:20,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:41:20,138 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:41:20,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20 WrapperNode [2020-12-22 18:41:20,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:41:20,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:41:20,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:41:20,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:41:20,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:41:20,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:41:20,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:41:20,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:41:20,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... [2020-12-22 18:41:20,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:41:20,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:41:20,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:41:20,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:41:20,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 18:41:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:41:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:41:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:41:20,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:41:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:41:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:41:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:41:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:41:20,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:41:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:41:22,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:41:22,849 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2020-12-22 18:41:22,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:41:22 BoogieIcfgContainer [2020-12-22 18:41:22,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:41:22,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:41:22,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:41:22,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:41:22,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:41:18" (1/3) ... [2020-12-22 18:41:22,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c7b74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:41:22, skipping insertion in model container [2020-12-22 18:41:22,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:41:20" (2/3) ... [2020-12-22 18:41:22,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c7b74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:41:22, skipping insertion in model container [2020-12-22 18:41:22,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:41:22" (3/3) ... [2020-12-22 18:41:22,859 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-1.i [2020-12-22 18:41:22,866 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:41:22,872 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 18:41:22,891 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 18:41:22,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:41:22,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:41:22,919 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:41:22,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:41:22,919 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:41:22,919 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:41:22,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:41:22,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:41:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-12-22 18:41:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 18:41:22,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:22,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:22,956 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:22,963 INFO L82 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2020-12-22 18:41:22,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:22,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565800554] [2020-12-22 18:41:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:41:23,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565800554] [2020-12-22 18:41:23,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:23,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:41:23,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649433486] [2020-12-22 18:41:23,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:41:23,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:23,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:41:23,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:41:23,162 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 2 states. [2020-12-22 18:41:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:23,211 INFO L93 Difference]: Finished difference Result 440 states and 724 transitions. [2020-12-22 18:41:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:41:23,213 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 18:41:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:23,232 INFO L225 Difference]: With dead ends: 440 [2020-12-22 18:41:23,232 INFO L226 Difference]: Without dead ends: 217 [2020-12-22 18:41:23,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:41:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-22 18:41:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-12-22 18:41:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 18:41:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2020-12-22 18:41:23,349 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2020-12-22 18:41:23,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:23,349 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2020-12-22 18:41:23,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:41:23,350 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2020-12-22 18:41:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 18:41:23,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:23,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:23,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:41:23,352 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:23,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:23,353 INFO L82 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2020-12-22 18:41:23,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:23,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179042326] [2020-12-22 18:41:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:41:23,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179042326] [2020-12-22 18:41:23,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:23,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:41:23,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551604397] [2020-12-22 18:41:23,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:41:23,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:23,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:41:23,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:23,518 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand 3 states. [2020-12-22 18:41:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:23,618 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2020-12-22 18:41:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:41:23,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 18:41:23,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:23,624 INFO L225 Difference]: With dead ends: 432 [2020-12-22 18:41:23,624 INFO L226 Difference]: Without dead ends: 387 [2020-12-22 18:41:23,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-12-22 18:41:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2020-12-22 18:41:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 18:41:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2020-12-22 18:41:23,644 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2020-12-22 18:41:23,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:23,644 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2020-12-22 18:41:23,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:41:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2020-12-22 18:41:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:41:23,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:23,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:23,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:41:23,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:23,652 INFO L82 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2020-12-22 18:41:23,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:23,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398660824] [2020-12-22 18:41:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:23,678 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:23,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073698213] [2020-12-22 18:41:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:24,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:41:24,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:41:24,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398660824] [2020-12-22 18:41:24,447 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:24,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073698213] [2020-12-22 18:41:24,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:24,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:41:24,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896274737] [2020-12-22 18:41:24,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:41:24,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:24,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:41:24,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:24,458 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand 3 states. [2020-12-22 18:41:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:24,604 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2020-12-22 18:41:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:41:24,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 18:41:24,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:24,608 INFO L225 Difference]: With dead ends: 454 [2020-12-22 18:41:24,608 INFO L226 Difference]: Without dead ends: 239 [2020-12-22 18:41:24,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-12-22 18:41:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2020-12-22 18:41:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-22 18:41:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2020-12-22 18:41:24,643 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2020-12-22 18:41:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:24,643 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2020-12-22 18:41:24,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:41:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2020-12-22 18:41:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:41:24,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:24,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:24,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:41:24,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:24,865 INFO L82 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2020-12-22 18:41:24,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:24,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867545512] [2020-12-22 18:41:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:24,908 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:24,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64214852] [2020-12-22 18:41:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:25,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:41:25,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:41:25,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867545512] [2020-12-22 18:41:25,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:25,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64214852] [2020-12-22 18:41:25,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:25,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:41:25,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987782374] [2020-12-22 18:41:25,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:41:25,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:25,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:41:25,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:25,331 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand 3 states. [2020-12-22 18:41:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:25,438 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2020-12-22 18:41:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:41:25,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 18:41:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:25,441 INFO L225 Difference]: With dead ends: 494 [2020-12-22 18:41:25,441 INFO L226 Difference]: Without dead ends: 259 [2020-12-22 18:41:25,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-22 18:41:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2020-12-22 18:41:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-22 18:41:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2020-12-22 18:41:25,450 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2020-12-22 18:41:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:25,451 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2020-12-22 18:41:25,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:41:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2020-12-22 18:41:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:41:25,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:25,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:25,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:25,668 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:25,670 INFO L82 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2020-12-22 18:41:25,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:25,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687090920] [2020-12-22 18:41:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:25,689 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:25,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149807307] [2020-12-22 18:41:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:25,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:41:25,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:41:26,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687090920] [2020-12-22 18:41:26,067 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:26,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149807307] [2020-12-22 18:41:26,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:26,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:41:26,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440117937] [2020-12-22 18:41:26,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:41:26,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:26,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:41:26,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:26,072 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand 4 states. [2020-12-22 18:41:26,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:26,177 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2020-12-22 18:41:26,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:41:26,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:41:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:26,179 INFO L225 Difference]: With dead ends: 505 [2020-12-22 18:41:26,179 INFO L226 Difference]: Without dead ends: 250 [2020-12-22 18:41:26,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:41:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-22 18:41:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2020-12-22 18:41:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-22 18:41:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2020-12-22 18:41:26,189 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2020-12-22 18:41:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:26,191 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2020-12-22 18:41:26,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:41:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2020-12-22 18:41:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:41:26,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:26,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:26,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:26,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2020-12-22 18:41:26,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:26,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776083220] [2020-12-22 18:41:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:26,440 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:26,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088041421] [2020-12-22 18:41:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:26,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:41:26,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:41:26,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776083220] [2020-12-22 18:41:26,805 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:26,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088041421] [2020-12-22 18:41:26,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:26,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:41:26,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012143794] [2020-12-22 18:41:26,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:41:26,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:41:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:26,809 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand 4 states. [2020-12-22 18:41:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:26,914 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2020-12-22 18:41:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:41:26,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:41:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:26,917 INFO L225 Difference]: With dead ends: 566 [2020-12-22 18:41:26,917 INFO L226 Difference]: Without dead ends: 325 [2020-12-22 18:41:26,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:41:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-12-22 18:41:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2020-12-22 18:41:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-12-22 18:41:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2020-12-22 18:41:26,928 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2020-12-22 18:41:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:26,929 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2020-12-22 18:41:26,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:41:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2020-12-22 18:41:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:41:26,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:26,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:27,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:27,146 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2020-12-22 18:41:27,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:27,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204590756] [2020-12-22 18:41:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:27,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:27,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450996880] [2020-12-22 18:41:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:27,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:41:27,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:41:27,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204590756] [2020-12-22 18:41:27,617 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:27,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450996880] [2020-12-22 18:41:27,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:41:27,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 18:41:27,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423719499] [2020-12-22 18:41:27,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:41:27,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:27,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:41:27,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:27,619 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand 4 states. [2020-12-22 18:41:27,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:27,672 INFO L93 Difference]: Finished difference Result 638 states and 780 transitions. [2020-12-22 18:41:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:41:27,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:41:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:27,677 INFO L225 Difference]: With dead ends: 638 [2020-12-22 18:41:27,677 INFO L226 Difference]: Without dead ends: 593 [2020-12-22 18:41:27,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-12-22 18:41:27,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 412. [2020-12-22 18:41:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-22 18:41:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 503 transitions. [2020-12-22 18:41:27,695 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 503 transitions. Word has length 106 [2020-12-22 18:41:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:27,696 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 503 transitions. [2020-12-22 18:41:27,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:41:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 503 transitions. [2020-12-22 18:41:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 18:41:27,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:27,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:27,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:41:27,913 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:27,914 INFO L82 PathProgramCache]: Analyzing trace with hash 548829604, now seen corresponding path program 2 times [2020-12-22 18:41:27,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:27,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038928778] [2020-12-22 18:41:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:27,940 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:27,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967837900] [2020-12-22 18:41:27,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:28,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 18:41:28,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:41:28,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:41:28,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-12-22 18:41:28,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038928778] [2020-12-22 18:41:28,553 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:28,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967837900] [2020-12-22 18:41:28,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:28,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:41:28,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505849752] [2020-12-22 18:41:28,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:41:28,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:28,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:41:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:28,560 INFO L87 Difference]: Start difference. First operand 412 states and 503 transitions. Second operand 4 states. [2020-12-22 18:41:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:29,255 INFO L93 Difference]: Finished difference Result 677 states and 831 transitions. [2020-12-22 18:41:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:41:29,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2020-12-22 18:41:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:29,276 INFO L225 Difference]: With dead ends: 677 [2020-12-22 18:41:29,276 INFO L226 Difference]: Without dead ends: 410 [2020-12-22 18:41:29,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-12-22 18:41:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2020-12-22 18:41:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-12-22 18:41:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 500 transitions. [2020-12-22 18:41:29,292 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 500 transitions. Word has length 204 [2020-12-22 18:41:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:29,292 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 500 transitions. [2020-12-22 18:41:29,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:41:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 500 transitions. [2020-12-22 18:41:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 18:41:29,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:29,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:29,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:29,511 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:29,513 INFO L82 PathProgramCache]: Analyzing trace with hash -7696284, now seen corresponding path program 1 times [2020-12-22 18:41:29,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:29,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111064670] [2020-12-22 18:41:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:29,534 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:29,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428902034] [2020-12-22 18:41:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:29,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:41:29,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 18:41:30,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111064670] [2020-12-22 18:41:30,024 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:30,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428902034] [2020-12-22 18:41:30,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:30,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:41:30,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014525970] [2020-12-22 18:41:30,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:41:30,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:30,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:41:30,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:30,027 INFO L87 Difference]: Start difference. First operand 410 states and 500 transitions. Second operand 3 states. [2020-12-22 18:41:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:30,085 INFO L93 Difference]: Finished difference Result 776 states and 957 transitions. [2020-12-22 18:41:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:41:30,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-12-22 18:41:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:30,088 INFO L225 Difference]: With dead ends: 776 [2020-12-22 18:41:30,089 INFO L226 Difference]: Without dead ends: 418 [2020-12-22 18:41:30,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:30,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-12-22 18:41:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-12-22 18:41:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-22 18:41:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2020-12-22 18:41:30,136 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 211 [2020-12-22 18:41:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:30,136 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2020-12-22 18:41:30,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:41:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2020-12-22 18:41:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 18:41:30,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:30,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:30,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:30,340 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:30,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1887603621, now seen corresponding path program 1 times [2020-12-22 18:41:30,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:30,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160754747] [2020-12-22 18:41:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:30,363 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:30,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191003064] [2020-12-22 18:41:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:30,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:41:30,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 18:41:30,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160754747] [2020-12-22 18:41:30,874 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:30,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191003064] [2020-12-22 18:41:30,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:41:30,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 18:41:30,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49227662] [2020-12-22 18:41:30,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:41:30,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:30,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:41:30,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:30,877 INFO L87 Difference]: Start difference. First operand 418 states and 508 transitions. Second operand 4 states. [2020-12-22 18:41:30,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:30,958 INFO L93 Difference]: Finished difference Result 791 states and 972 transitions. [2020-12-22 18:41:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:41:30,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-12-22 18:41:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:30,961 INFO L225 Difference]: With dead ends: 791 [2020-12-22 18:41:30,961 INFO L226 Difference]: Without dead ends: 426 [2020-12-22 18:41:30,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:41:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-12-22 18:41:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2020-12-22 18:41:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-22 18:41:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 516 transitions. [2020-12-22 18:41:31,003 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 516 transitions. Word has length 213 [2020-12-22 18:41:31,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:31,003 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 516 transitions. [2020-12-22 18:41:31,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:41:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 516 transitions. [2020-12-22 18:41:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 18:41:31,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:31,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:31,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:41:31,221 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash -546185468, now seen corresponding path program 2 times [2020-12-22 18:41:31,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:31,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788008059] [2020-12-22 18:41:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:31,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:31,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435033095] [2020-12-22 18:41:31,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:31,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:41:31,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:41:31,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:41:31,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 18:41:31,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788008059] [2020-12-22 18:41:31,803 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:31,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435033095] [2020-12-22 18:41:31,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:41:31,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 18:41:31,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400072032] [2020-12-22 18:41:31,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:41:31,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:41:31,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:41:31,805 INFO L87 Difference]: Start difference. First operand 426 states and 516 transitions. Second operand 5 states. [2020-12-22 18:41:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:31,888 INFO L93 Difference]: Finished difference Result 806 states and 987 transitions. [2020-12-22 18:41:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:41:31,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-12-22 18:41:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:31,891 INFO L225 Difference]: With dead ends: 806 [2020-12-22 18:41:31,892 INFO L226 Difference]: Without dead ends: 434 [2020-12-22 18:41:31,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:41:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-12-22 18:41:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2020-12-22 18:41:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-12-22 18:41:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 524 transitions. [2020-12-22 18:41:31,910 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 524 transitions. Word has length 215 [2020-12-22 18:41:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:31,910 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 524 transitions. [2020-12-22 18:41:31,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:41:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 524 transitions. [2020-12-22 18:41:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 18:41:31,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:31,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:32,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:32,128 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1962229253, now seen corresponding path program 3 times [2020-12-22 18:41:32,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:32,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644842009] [2020-12-22 18:41:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:32,149 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:32,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534548698] [2020-12-22 18:41:32,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:32,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:41:32,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:41:32,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:41:32,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 18:41:32,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644842009] [2020-12-22 18:41:32,744 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:32,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534548698] [2020-12-22 18:41:32,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:41:32,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:41:32,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335959768] [2020-12-22 18:41:32,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:41:32,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:32,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:41:32,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:32,751 INFO L87 Difference]: Start difference. First operand 434 states and 524 transitions. Second operand 3 states. [2020-12-22 18:41:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:32,806 INFO L93 Difference]: Finished difference Result 804 states and 976 transitions. [2020-12-22 18:41:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:41:32,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 18:41:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:32,811 INFO L225 Difference]: With dead ends: 804 [2020-12-22 18:41:32,811 INFO L226 Difference]: Without dead ends: 432 [2020-12-22 18:41:32,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:41:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-12-22 18:41:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2020-12-22 18:41:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-12-22 18:41:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 521 transitions. [2020-12-22 18:41:32,830 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 521 transitions. Word has length 217 [2020-12-22 18:41:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:32,830 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 521 transitions. [2020-12-22 18:41:32,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:41:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 521 transitions. [2020-12-22 18:41:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-12-22 18:41:32,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:32,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:33,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:33,049 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:33,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:33,050 INFO L82 PathProgramCache]: Analyzing trace with hash -511436746, now seen corresponding path program 1 times [2020-12-22 18:41:33,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:33,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515835776] [2020-12-22 18:41:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:33,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:33,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175460046] [2020-12-22 18:41:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:41:33,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 18:41:33,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-12-22 18:41:33,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515835776] [2020-12-22 18:41:33,680 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:33,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175460046] [2020-12-22 18:41:33,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:41:33,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:41:33,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624771091] [2020-12-22 18:41:33,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:41:33,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:33,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:41:33,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:41:33,682 INFO L87 Difference]: Start difference. First operand 432 states and 521 transitions. Second operand 6 states. [2020-12-22 18:41:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:33,800 INFO L93 Difference]: Finished difference Result 819 states and 999 transitions. [2020-12-22 18:41:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:41:33,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2020-12-22 18:41:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:33,803 INFO L225 Difference]: With dead ends: 819 [2020-12-22 18:41:33,803 INFO L226 Difference]: Without dead ends: 440 [2020-12-22 18:41:33,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:41:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-12-22 18:41:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2020-12-22 18:41:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-12-22 18:41:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 529 transitions. [2020-12-22 18:41:33,822 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 529 transitions. Word has length 230 [2020-12-22 18:41:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:33,822 INFO L481 AbstractCegarLoop]: Abstraction has 440 states and 529 transitions. [2020-12-22 18:41:33,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:41:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 529 transitions. [2020-12-22 18:41:33,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-12-22 18:41:33,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:33,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:34,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:41:34,041 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:34,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1844438796, now seen corresponding path program 2 times [2020-12-22 18:41:34,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:34,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079827558] [2020-12-22 18:41:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:34,062 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:34,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372106816] [2020-12-22 18:41:34,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:41:34,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:41:34,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:41:34,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:41:34,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:41:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-12-22 18:41:34,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079827558] [2020-12-22 18:41:34,738 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:41:34,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372106816] [2020-12-22 18:41:34,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:41:34,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:41:34,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617296243] [2020-12-22 18:41:34,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:41:34,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:41:34,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:41:34,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:41:34,740 INFO L87 Difference]: Start difference. First operand 440 states and 529 transitions. Second operand 7 states. [2020-12-22 18:41:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:41:34,857 INFO L93 Difference]: Finished difference Result 834 states and 1014 transitions. [2020-12-22 18:41:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:41:34,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-12-22 18:41:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:41:34,861 INFO L225 Difference]: With dead ends: 834 [2020-12-22 18:41:34,861 INFO L226 Difference]: Without dead ends: 448 [2020-12-22 18:41:34,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:41:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-12-22 18:41:34,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2020-12-22 18:41:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-12-22 18:41:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 537 transitions. [2020-12-22 18:41:34,883 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 537 transitions. Word has length 234 [2020-12-22 18:41:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:41:34,884 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 537 transitions. [2020-12-22 18:41:34,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:41:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 537 transitions. [2020-12-22 18:41:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 18:41:34,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:41:34,887 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:41:35,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:41:35,101 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:41:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:41:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash 951531638, now seen corresponding path program 3 times [2020-12-22 18:41:35,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:41:35,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708497631] [2020-12-22 18:41:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:41:35,139 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:41:35,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277974842] [2020-12-22 18:41:35,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true