/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_JEN_test10-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:16:38,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:16:38,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:16:38,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:16:38,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:16:38,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:16:38,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:16:38,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:16:38,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:16:38,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:16:38,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:16:38,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:16:38,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:16:38,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:16:38,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:16:38,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:16:38,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:16:38,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:16:38,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:16:38,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:16:38,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:16:38,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:16:38,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:16:38,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:16:38,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:16:38,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:16:38,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:16:38,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:16:38,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:16:38,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:16:38,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:16:38,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:16:38,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:16:38,503 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:16:38,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:16:38,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:16:38,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:16:38,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:16:38,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:16:38,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:16:38,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:16:38,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:16:38,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:16:38,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:16:38,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:16:38,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:16:38,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:16:38,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:16:38,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:16:38,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:16:38,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:16:38,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:16:38,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:16:38,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:16:38,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:16:38,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:16:38,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:16:38,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:16:38,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:16:38,943 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:16:38,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2020-12-22 18:16:39,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ef25f97/ee57037fb9fa49bb974350fbedf9c925/FLAGf1c192f4b [2020-12-22 18:16:39,936 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:16:39,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2020-12-22 18:16:39,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ef25f97/ee57037fb9fa49bb974350fbedf9c925/FLAGf1c192f4b [2020-12-22 18:16:40,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ef25f97/ee57037fb9fa49bb974350fbedf9c925 [2020-12-22 18:16:40,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:16:40,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:16:40,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:16:40,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:16:40,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:16:40,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:40,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce20d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40, skipping insertion in model container [2020-12-22 18:16:40,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:40,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:16:40,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:16:40,789 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_JEN_test10-3.i[33022,33035] [2020-12-22 18:16:41,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:16:41,237 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:16:41,276 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_JEN_test10-3.i[33022,33035] [2020-12-22 18:16:41,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:16:41,460 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:16:41,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41 WrapperNode [2020-12-22 18:16:41,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:16:41,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:16:41,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:16:41,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:16:41,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:16:41,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:16:41,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:16:41,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:16:41,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (1/1) ... [2020-12-22 18:16:41,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:16:41,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:16:41,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:16:41,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:16:41,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (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 18:16:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:16:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:16:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:16:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:16:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:16:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 18:16:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:16:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:16:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:16:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:16:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:16:45,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:16:45,115 INFO L299 CfgBuilder]: Removed 224 assume(true) statements. [2020-12-22 18:16:45,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:16:45 BoogieIcfgContainer [2020-12-22 18:16:45,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:16:45,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:16:45,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:16:45,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:16:45,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:16:40" (1/3) ... [2020-12-22 18:16:45,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6162b5fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:16:45, skipping insertion in model container [2020-12-22 18:16:45,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:41" (2/3) ... [2020-12-22 18:16:45,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6162b5fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:16:45, skipping insertion in model container [2020-12-22 18:16:45,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:16:45" (3/3) ... [2020-12-22 18:16:45,178 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-3.i [2020-12-22 18:16:45,186 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:16:45,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-22 18:16:45,218 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-22 18:16:45,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:16:45,272 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:16:45,272 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:16:45,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:16:45,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:16:45,273 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:16:45,273 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:16:45,273 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:16:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states. [2020-12-22 18:16:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:16:45,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:45,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:16:45,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:45,340 INFO L82 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2020-12-22 18:16:45,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:45,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803073815] [2020-12-22 18:16:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:45,583 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 18:16:45,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803073815] [2020-12-22 18:16:45,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:45,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:16:45,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165280232] [2020-12-22 18:16:45,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:16:45,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:45,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:16:45,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:16:45,611 INFO L87 Difference]: Start difference. First operand 520 states. Second operand 2 states. [2020-12-22 18:16:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:45,711 INFO L93 Difference]: Finished difference Result 1038 states and 1752 transitions. [2020-12-22 18:16:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:16:45,713 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 18:16:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:45,739 INFO L225 Difference]: With dead ends: 1038 [2020-12-22 18:16:45,739 INFO L226 Difference]: Without dead ends: 465 [2020-12-22 18:16:45,751 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 18:16:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-12-22 18:16:45,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-12-22 18:16:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 18:16:45,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2020-12-22 18:16:45,836 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2020-12-22 18:16:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:45,837 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2020-12-22 18:16:45,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:16:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2020-12-22 18:16:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:16:45,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:45,841 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] [2020-12-22 18:16:45,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:16:45,841 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2020-12-22 18:16:45,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:45,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580578440] [2020-12-22 18:16:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:45,967 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 18:16:45,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580578440] [2020-12-22 18:16:45,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:45,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:45,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417567296] [2020-12-22 18:16:45,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:45,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:45,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:45,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:45,972 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand 4 states. [2020-12-22 18:16:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:47,576 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2020-12-22 18:16:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:47,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 18:16:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:47,585 INFO L225 Difference]: With dead ends: 831 [2020-12-22 18:16:47,585 INFO L226 Difference]: Without dead ends: 540 [2020-12-22 18:16:47,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:16:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-12-22 18:16:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2020-12-22 18:16:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-12-22 18:16:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2020-12-22 18:16:47,633 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2020-12-22 18:16:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:47,633 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2020-12-22 18:16:47,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2020-12-22 18:16:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:47,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:47,675 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:47,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:16:47,679 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:47,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2020-12-22 18:16:47,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:47,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686518672] [2020-12-22 18:16:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:47,761 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:47,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674393875] [2020-12-22 18:16:47,761 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 18:16:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:48,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:48,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:16:48,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686518672] [2020-12-22 18:16:48,551 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:48,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674393875] [2020-12-22 18:16:48,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:48,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:48,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933255419] [2020-12-22 18:16:48,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:48,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:48,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:48,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:48,562 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand 3 states. [2020-12-22 18:16:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:48,716 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2020-12-22 18:16:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:48,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:16:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:48,720 INFO L225 Difference]: With dead ends: 951 [2020-12-22 18:16:48,721 INFO L226 Difference]: Without dead ends: 488 [2020-12-22 18:16:48,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 18:16:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-12-22 18:16:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2020-12-22 18:16:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-12-22 18:16:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2020-12-22 18:16:48,743 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2020-12-22 18:16:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:48,743 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2020-12-22 18:16:48,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2020-12-22 18:16:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:48,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:48,747 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:48,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:16:48,952 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:48,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:48,954 INFO L82 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2020-12-22 18:16:48,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:48,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942340419] [2020-12-22 18:16:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:48,980 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:48,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470098187] [2020-12-22 18:16:48,981 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 18:16:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:49,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:49,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:16:49,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942340419] [2020-12-22 18:16:49,426 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:49,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470098187] [2020-12-22 18:16:49,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:49,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:49,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91625189] [2020-12-22 18:16:49,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:49,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:49,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:49,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:49,429 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand 3 states. [2020-12-22 18:16:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:49,539 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2020-12-22 18:16:49,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:49,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:16:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:49,543 INFO L225 Difference]: With dead ends: 787 [2020-12-22 18:16:49,544 INFO L226 Difference]: Without dead ends: 508 [2020-12-22 18:16:49,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 18:16:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-22 18:16:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2020-12-22 18:16:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-22 18:16:49,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2020-12-22 18:16:49,560 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2020-12-22 18:16:49,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:49,561 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2020-12-22 18:16:49,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2020-12-22 18:16:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:49,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:49,563 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:49,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:49,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:49,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2020-12-22 18:16:49,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:49,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735466116] [2020-12-22 18:16:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:49,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:49,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371424286] [2020-12-22 18:16:49,806 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 18:16:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:50,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:50,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:16:50,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735466116] [2020-12-22 18:16:50,258 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:50,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371424286] [2020-12-22 18:16:50,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:50,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:50,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502430681] [2020-12-22 18:16:50,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:50,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:50,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:50,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:50,260 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand 4 states. [2020-12-22 18:16:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:50,373 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2020-12-22 18:16:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:50,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:16:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:50,377 INFO L225 Difference]: With dead ends: 1086 [2020-12-22 18:16:50,377 INFO L226 Difference]: Without dead ends: 583 [2020-12-22 18:16:50,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 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 18:16:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-22 18:16:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2020-12-22 18:16:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-22 18:16:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2020-12-22 18:16:50,395 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2020-12-22 18:16:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:50,395 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2020-12-22 18:16:50,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2020-12-22 18:16:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:50,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:50,397 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:50,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:50,612 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:50,614 INFO L82 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2020-12-22 18:16:50,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:50,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106026958] [2020-12-22 18:16:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:50,638 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:50,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372867400] [2020-12-22 18:16:50,639 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 18:16:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:50,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:50,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 18:16:51,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106026958] [2020-12-22 18:16:51,128 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:51,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372867400] [2020-12-22 18:16:51,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:51,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:51,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943244764] [2020-12-22 18:16:51,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:51,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:51,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:51,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:51,133 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand 4 states. [2020-12-22 18:16:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:51,293 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2020-12-22 18:16:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:51,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:16:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:51,298 INFO L225 Difference]: With dead ends: 761 [2020-12-22 18:16:51,298 INFO L226 Difference]: Without dead ends: 480 [2020-12-22 18:16:51,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 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 18:16:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-12-22 18:16:51,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2020-12-22 18:16:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-12-22 18:16:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2020-12-22 18:16:51,321 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2020-12-22 18:16:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:51,323 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2020-12-22 18:16:51,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2020-12-22 18:16:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:51,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:51,325 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:51,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:51,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:51,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2020-12-22 18:16:51,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:51,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956324825] [2020-12-22 18:16:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:51,559 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:51,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283235161] [2020-12-22 18:16:51,559 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 18:16:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:51,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:16:51,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:16:52,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956324825] [2020-12-22 18:16:52,074 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:52,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283235161] [2020-12-22 18:16:52,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:52,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:52,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716772626] [2020-12-22 18:16:52,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:52,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:52,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:52,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:52,077 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand 3 states. [2020-12-22 18:16:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:52,193 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2020-12-22 18:16:52,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:52,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:16:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:52,198 INFO L225 Difference]: With dead ends: 1231 [2020-12-22 18:16:52,199 INFO L226 Difference]: Without dead ends: 756 [2020-12-22 18:16:52,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 18:16:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-12-22 18:16:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2020-12-22 18:16:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-12-22 18:16:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2020-12-22 18:16:52,230 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2020-12-22 18:16:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:52,230 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2020-12-22 18:16:52,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2020-12-22 18:16:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 18:16:52,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:52,232 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:52,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:16:52,447 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2020-12-22 18:16:52,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:52,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871130399] [2020-12-22 18:16:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:52,472 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:52,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606021506] [2020-12-22 18:16:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:16:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:52,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:52,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:16:52,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871130399] [2020-12-22 18:16:52,929 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:52,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606021506] [2020-12-22 18:16:52,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:52,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:52,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213931986] [2020-12-22 18:16:52,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:52,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:52,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:52,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:52,932 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand 3 states. [2020-12-22 18:16:52,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:52,997 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2020-12-22 18:16:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:52,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 18:16:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:53,002 INFO L225 Difference]: With dead ends: 1400 [2020-12-22 18:16:53,002 INFO L226 Difference]: Without dead ends: 727 [2020-12-22 18:16:53,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 18:16:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-12-22 18:16:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2020-12-22 18:16:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-12-22 18:16:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2020-12-22 18:16:53,028 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2020-12-22 18:16:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:53,029 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2020-12-22 18:16:53,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2020-12-22 18:16:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:16:53,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:53,033 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:53,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:53,249 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2020-12-22 18:16:53,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:53,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47558345] [2020-12-22 18:16:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:53,274 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:53,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175255227] [2020-12-22 18:16:53,274 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 18:16:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:53,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:16:53,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 18:16:53,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47558345] [2020-12-22 18:16:53,812 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:53,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175255227] [2020-12-22 18:16:53,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:16:53,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 18:16:53,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377001918] [2020-12-22 18:16:53,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:53,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:53,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:53,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:53,816 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand 4 states. [2020-12-22 18:16:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:53,907 INFO L93 Difference]: Finished difference Result 1411 states and 1820 transitions. [2020-12-22 18:16:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:53,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:16:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:53,912 INFO L225 Difference]: With dead ends: 1411 [2020-12-22 18:16:53,913 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:16:53,914 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 18:16:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:16:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:16:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:16:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 942 transitions. [2020-12-22 18:16:53,939 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 942 transitions. Word has length 106 [2020-12-22 18:16:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:53,939 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 942 transitions. [2020-12-22 18:16:53,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 942 transitions. [2020-12-22 18:16:53,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 18:16:53,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:53,941 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:54,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:54,156 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash -462744993, now seen corresponding path program 2 times [2020-12-22 18:16:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:54,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666799463] [2020-12-22 18:16:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:54,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:54,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389906337] [2020-12-22 18:16:54,178 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 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 18:16:54,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:16:54,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:16:54,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:16:54,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:16:54,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666799463] [2020-12-22 18:16:54,647 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:54,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389906337] [2020-12-22 18:16:54,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:16:54,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 18:16:54,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368697545] [2020-12-22 18:16:54,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:16:54,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:54,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:16:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:16:54,650 INFO L87 Difference]: Start difference. First operand 733 states and 942 transitions. Second operand 5 states. [2020-12-22 18:16:54,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:54,763 INFO L93 Difference]: Finished difference Result 1422 states and 1831 transitions. [2020-12-22 18:16:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:16:54,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 18:16:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:54,769 INFO L225 Difference]: With dead ends: 1422 [2020-12-22 18:16:54,769 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:16:54,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 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 18:16:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:16:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:16:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:16:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 948 transitions. [2020-12-22 18:16:54,796 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 948 transitions. Word has length 108 [2020-12-22 18:16:54,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:54,796 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 948 transitions. [2020-12-22 18:16:54,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:16:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 948 transitions. [2020-12-22 18:16:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 18:16:54,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:54,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:55,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:16:55,013 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:55,014 INFO L82 PathProgramCache]: Analyzing trace with hash 87417216, now seen corresponding path program 3 times [2020-12-22 18:16:55,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:55,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278753063] [2020-12-22 18:16:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:55,069 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:55,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973244970] [2020-12-22 18:16:55,070 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 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 18:16:55,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:16:55,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:16:55,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:16:55,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:55,503 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-22 18:16:55,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:16:55,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:16:55,512 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:16:55,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 18:16:55,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:16:55,599 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-22 18:16:55,600 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:16:55,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:16:55,607 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:16:55,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:71, output treesize:3 [2020-12-22 18:16:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:16:55,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278753063] [2020-12-22 18:16:55,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:55,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973244970] [2020-12-22 18:16:55,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:55,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:16:55,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199611094] [2020-12-22 18:16:55,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:16:55,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:55,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:16:55,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:16:55,693 INFO L87 Difference]: Start difference. First operand 739 states and 948 transitions. Second operand 5 states. [2020-12-22 18:16:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:57,009 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2020-12-22 18:16:57,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:16:57,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 18:16:57,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:57,014 INFO L225 Difference]: With dead ends: 1382 [2020-12-22 18:16:57,014 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:16:57,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:16:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:16:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:16:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:16:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 947 transitions. [2020-12-22 18:16:57,045 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 947 transitions. Word has length 110 [2020-12-22 18:16:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:57,046 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 947 transitions. [2020-12-22 18:16:57,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:16:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 947 transitions. [2020-12-22 18:16:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:57,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:57,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:57,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:57,267 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash -2117457625, now seen corresponding path program 1 times [2020-12-22 18:16:57,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:57,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303829081] [2020-12-22 18:16:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:57,305 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:57,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038594683] [2020-12-22 18:16:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:16:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:57,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:57,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:16:57,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303829081] [2020-12-22 18:16:57,857 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:57,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038594683] [2020-12-22 18:16:57,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:57,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:57,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017837752] [2020-12-22 18:16:57,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:57,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:57,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:57,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:57,863 INFO L87 Difference]: Start difference. First operand 739 states and 947 transitions. Second operand 3 states. [2020-12-22 18:16:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:57,971 INFO L93 Difference]: Finished difference Result 1502 states and 1935 transitions. [2020-12-22 18:16:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:57,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 18:16:57,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:57,976 INFO L225 Difference]: With dead ends: 1502 [2020-12-22 18:16:57,976 INFO L226 Difference]: Without dead ends: 781 [2020-12-22 18:16:57,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 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 18:16:57,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-12-22 18:16:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 779. [2020-12-22 18:16:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-12-22 18:16:58,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 987 transitions. [2020-12-22 18:16:58,001 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 987 transitions. Word has length 157 [2020-12-22 18:16:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:58,002 INFO L481 AbstractCegarLoop]: Abstraction has 779 states and 987 transitions. [2020-12-22 18:16:58,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 987 transitions. [2020-12-22 18:16:58,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:58,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:58,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:58,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:58,220 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:58,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:58,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1572585051, now seen corresponding path program 1 times [2020-12-22 18:16:58,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:58,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210423459] [2020-12-22 18:16:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:58,242 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:58,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589275814] [2020-12-22 18:16:58,243 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 18:16:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:58,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:58,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:16:58,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210423459] [2020-12-22 18:16:58,761 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:58,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589275814] [2020-12-22 18:16:58,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:58,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:58,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524658208] [2020-12-22 18:16:58,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:58,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:58,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:58,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:58,763 INFO L87 Difference]: Start difference. First operand 779 states and 987 transitions. Second operand 4 states. [2020-12-22 18:16:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:58,887 INFO L93 Difference]: Finished difference Result 1496 states and 1900 transitions. [2020-12-22 18:16:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:58,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:16:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:58,892 INFO L225 Difference]: With dead ends: 1496 [2020-12-22 18:16:58,892 INFO L226 Difference]: Without dead ends: 753 [2020-12-22 18:16:58,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 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 18:16:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-12-22 18:16:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2020-12-22 18:16:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-12-22 18:16:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 945 transitions. [2020-12-22 18:16:58,949 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 945 transitions. Word has length 157 [2020-12-22 18:16:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:58,950 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 945 transitions. [2020-12-22 18:16:58,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 945 transitions. [2020-12-22 18:16:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:58,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:58,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:59,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:16:59,164 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:16:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash 94293941, now seen corresponding path program 1 times [2020-12-22 18:16:59,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:59,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729233877] [2020-12-22 18:16:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:59,186 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:59,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623800620] [2020-12-22 18:16:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:16:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:59,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:16:59,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:16:59,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729233877] [2020-12-22 18:16:59,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:59,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623800620] [2020-12-22 18:16:59,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:59,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:16:59,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825514151] [2020-12-22 18:16:59,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:16:59,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:59,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:16:59,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:16:59,721 INFO L87 Difference]: Start difference. First operand 751 states and 945 transitions. Second operand 5 states. [2020-12-22 18:16:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:59,904 INFO L93 Difference]: Finished difference Result 2209 states and 2786 transitions. [2020-12-22 18:16:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:16:59,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-12-22 18:16:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:59,912 INFO L225 Difference]: With dead ends: 2209 [2020-12-22 18:16:59,912 INFO L226 Difference]: Without dead ends: 1496 [2020-12-22 18:16:59,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:16:59,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-12-22 18:16:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 797. [2020-12-22 18:16:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-12-22 18:16:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 995 transitions. [2020-12-22 18:16:59,948 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 995 transitions. Word has length 157 [2020-12-22 18:16:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:59,949 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 995 transitions. [2020-12-22 18:16:59,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:16:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 995 transitions. [2020-12-22 18:16:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:59,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:59,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:00,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:17:00,167 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:00,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:00,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1994860229, now seen corresponding path program 1 times [2020-12-22 18:17:00,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:00,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632289642] [2020-12-22 18:17:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:00,188 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:00,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858604955] [2020-12-22 18:17:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 18:17:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:17:00,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:17:00,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:17:00,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632289642] [2020-12-22 18:17:00,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:00,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858604955] [2020-12-22 18:17:00,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:17:00,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:17:00,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101714280] [2020-12-22 18:17:00,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:17:00,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:00,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:17:00,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:17:00,789 INFO L87 Difference]: Start difference. First operand 797 states and 995 transitions. Second operand 4 states. [2020-12-22 18:17:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:00,885 INFO L93 Difference]: Finished difference Result 1503 states and 1887 transitions. [2020-12-22 18:17:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:17:00,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:17:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:00,890 INFO L225 Difference]: With dead ends: 1503 [2020-12-22 18:17:00,891 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:17:00,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 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 18:17:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:17:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:17:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:17:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 917 transitions. [2020-12-22 18:17:00,924 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 917 transitions. Word has length 157 [2020-12-22 18:17:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:00,925 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 917 transitions. [2020-12-22 18:17:00,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:17:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 917 transitions. [2020-12-22 18:17:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:17:00,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:00,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:01,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:17:01,143 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:01,144 INFO L82 PathProgramCache]: Analyzing trace with hash 639166515, now seen corresponding path program 1 times [2020-12-22 18:17:01,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:01,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822151003] [2020-12-22 18:17:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:01,176 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:01,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438954198] [2020-12-22 18:17:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:17:01,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 18:17:01,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 18:17:01,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822151003] [2020-12-22 18:17:01,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:01,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438954198] [2020-12-22 18:17:01,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:01,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:17:01,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271848014] [2020-12-22 18:17:01,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:17:01,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:01,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:17:01,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:17:01,745 INFO L87 Difference]: Start difference. First operand 733 states and 917 transitions. Second operand 6 states. [2020-12-22 18:17:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:01,852 INFO L93 Difference]: Finished difference Result 1424 states and 1796 transitions. [2020-12-22 18:17:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:17:01,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-12-22 18:17:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:01,856 INFO L225 Difference]: With dead ends: 1424 [2020-12-22 18:17:01,856 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:17:01,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 18:17:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:17:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:17:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:17:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 923 transitions. [2020-12-22 18:17:01,884 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 923 transitions. Word has length 157 [2020-12-22 18:17:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:01,885 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 923 transitions. [2020-12-22 18:17:01,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:17:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 923 transitions. [2020-12-22 18:17:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 18:17:01,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:01,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:02,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:02,103 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:02,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1050888114, now seen corresponding path program 2 times [2020-12-22 18:17:02,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:02,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262253717] [2020-12-22 18:17:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:02,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:02,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173702827] [2020-12-22 18:17:02,124 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:02,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:17:02,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:02,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:17:02,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 18:17:02,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262253717] [2020-12-22 18:17:02,778 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:02,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173702827] [2020-12-22 18:17:02,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:02,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:17:02,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109154757] [2020-12-22 18:17:02,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:17:02,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:02,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:17:02,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:17:02,780 INFO L87 Difference]: Start difference. First operand 739 states and 923 transitions. Second operand 7 states. [2020-12-22 18:17:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:02,899 INFO L93 Difference]: Finished difference Result 1435 states and 1807 transitions. [2020-12-22 18:17:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:17:02,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-12-22 18:17:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:02,903 INFO L225 Difference]: With dead ends: 1435 [2020-12-22 18:17:02,903 INFO L226 Difference]: Without dead ends: 745 [2020-12-22 18:17:02,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 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 18:17:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-22 18:17:02,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2020-12-22 18:17:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-12-22 18:17:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 929 transitions. [2020-12-22 18:17:02,932 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 929 transitions. Word has length 159 [2020-12-22 18:17:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:02,932 INFO L481 AbstractCegarLoop]: Abstraction has 745 states and 929 transitions. [2020-12-22 18:17:02,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:17:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 929 transitions. [2020-12-22 18:17:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 18:17:02,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:02,935 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:03,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 18:17:03,151 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:03,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:03,152 INFO L82 PathProgramCache]: Analyzing trace with hash 770488787, now seen corresponding path program 3 times [2020-12-22 18:17:03,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:03,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693873440] [2020-12-22 18:17:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:03,169 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:03,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289727379] [2020-12-22 18:17:03,170 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:03,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:17:03,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:03,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:17:03,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-22 18:17:03,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693873440] [2020-12-22 18:17:03,748 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:03,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289727379] [2020-12-22 18:17:03,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:17:03,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:17:03,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486005834] [2020-12-22 18:17:03,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:17:03,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:03,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:17:03,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:17:03,750 INFO L87 Difference]: Start difference. First operand 745 states and 929 transitions. Second operand 3 states. [2020-12-22 18:17:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:03,869 INFO L93 Difference]: Finished difference Result 1749 states and 2217 transitions. [2020-12-22 18:17:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:17:03,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 18:17:03,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:03,875 INFO L225 Difference]: With dead ends: 1749 [2020-12-22 18:17:03,876 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 18:17:03,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 18:17:03,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 18:17:03,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 906. [2020-12-22 18:17:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 18:17:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1156 transitions. [2020-12-22 18:17:03,909 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1156 transitions. Word has length 161 [2020-12-22 18:17:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:03,909 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1156 transitions. [2020-12-22 18:17:03,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:17:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1156 transitions. [2020-12-22 18:17:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 18:17:03,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:03,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:04,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 18:17:04,126 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:04,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:04,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1484056676, now seen corresponding path program 1 times [2020-12-22 18:17:04,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:04,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538456164] [2020-12-22 18:17:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:04,149 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:04,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008836489] [2020-12-22 18:17:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:17:04,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:17:04,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 18:17:04,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538456164] [2020-12-22 18:17:04,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:04,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008836489] [2020-12-22 18:17:04,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:04,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 18:17:04,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165017820] [2020-12-22 18:17:04,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:17:04,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:04,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:17:04,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:17:04,841 INFO L87 Difference]: Start difference. First operand 906 states and 1156 transitions. Second operand 8 states. [2020-12-22 18:17:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:04,978 INFO L93 Difference]: Finished difference Result 1770 states and 2275 transitions. [2020-12-22 18:17:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:17:04,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 178 [2020-12-22 18:17:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:04,985 INFO L225 Difference]: With dead ends: 1770 [2020-12-22 18:17:04,985 INFO L226 Difference]: Without dead ends: 912 [2020-12-22 18:17:04,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:17:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-12-22 18:17:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2020-12-22 18:17:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-12-22 18:17:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1162 transitions. [2020-12-22 18:17:05,018 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1162 transitions. Word has length 178 [2020-12-22 18:17:05,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:05,019 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1162 transitions. [2020-12-22 18:17:05,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:17:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1162 transitions. [2020-12-22 18:17:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-22 18:17:05,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:05,022 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:05,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:05,234 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash -453644734, now seen corresponding path program 2 times [2020-12-22 18:17:05,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:05,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289227811] [2020-12-22 18:17:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:05,255 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:05,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079488488] [2020-12-22 18:17:05,255 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:05,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:17:05,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:05,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:17:05,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-22 18:17:05,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289227811] [2020-12-22 18:17:05,995 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:05,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079488488] [2020-12-22 18:17:05,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:05,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 18:17:05,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359829054] [2020-12-22 18:17:05,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 18:17:05,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:05,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 18:17:05,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:17:05,997 INFO L87 Difference]: Start difference. First operand 912 states and 1162 transitions. Second operand 9 states. [2020-12-22 18:17:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:06,146 INFO L93 Difference]: Finished difference Result 1781 states and 2286 transitions. [2020-12-22 18:17:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:17:06,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-12-22 18:17:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:06,151 INFO L225 Difference]: With dead ends: 1781 [2020-12-22 18:17:06,151 INFO L226 Difference]: Without dead ends: 918 [2020-12-22 18:17:06,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:17:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-12-22 18:17:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2020-12-22 18:17:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-12-22 18:17:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1168 transitions. [2020-12-22 18:17:06,185 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1168 transitions. Word has length 182 [2020-12-22 18:17:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:06,185 INFO L481 AbstractCegarLoop]: Abstraction has 918 states and 1168 transitions. [2020-12-22 18:17:06,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 18:17:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1168 transitions. [2020-12-22 18:17:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 18:17:06,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:06,189 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:06,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:06,403 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:06,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1986963428, now seen corresponding path program 3 times [2020-12-22 18:17:06,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:06,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773606401] [2020-12-22 18:17:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:06,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:06,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219814591] [2020-12-22 18:17:06,425 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:06,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:17:06,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:06,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:17:06,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-12-22 18:17:07,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773606401] [2020-12-22 18:17:07,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:07,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219814591] [2020-12-22 18:17:07,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:17:07,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:17:07,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728998236] [2020-12-22 18:17:07,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:17:07,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:07,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:17:07,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:17:07,155 INFO L87 Difference]: Start difference. First operand 918 states and 1168 transitions. Second operand 4 states. [2020-12-22 18:17:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:08,722 INFO L93 Difference]: Finished difference Result 1509 states and 1921 transitions. [2020-12-22 18:17:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:17:08,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-12-22 18:17:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:08,727 INFO L225 Difference]: With dead ends: 1509 [2020-12-22 18:17:08,728 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 18:17:08,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 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 18:17:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 18:17:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 18:17:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 18:17:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 909 transitions. [2020-12-22 18:17:08,772 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 909 transitions. Word has length 186 [2020-12-22 18:17:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:08,772 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 909 transitions. [2020-12-22 18:17:08,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:17:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 909 transitions. [2020-12-22 18:17:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 18:17:08,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:08,777 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:08,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:08,991 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:08,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1622468887, now seen corresponding path program 1 times [2020-12-22 18:17:08,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:08,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012814296] [2020-12-22 18:17:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:09,017 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:09,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000150188] [2020-12-22 18:17:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:17:09,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 18:17:09,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-22 18:17:09,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012814296] [2020-12-22 18:17:09,802 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:09,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000150188] [2020-12-22 18:17:09,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:09,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 18:17:09,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667004225] [2020-12-22 18:17:09,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 18:17:09,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 18:17:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:17:09,804 INFO L87 Difference]: Start difference. First operand 732 states and 909 transitions. Second operand 10 states. [2020-12-22 18:17:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:09,970 INFO L93 Difference]: Finished difference Result 1418 states and 1775 transitions. [2020-12-22 18:17:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:17:09,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-12-22 18:17:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:09,974 INFO L225 Difference]: With dead ends: 1418 [2020-12-22 18:17:09,975 INFO L226 Difference]: Without dead ends: 736 [2020-12-22 18:17:09,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:17:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-12-22 18:17:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2020-12-22 18:17:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-12-22 18:17:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2020-12-22 18:17:10,007 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 193 [2020-12-22 18:17:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:10,008 INFO L481 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2020-12-22 18:17:10,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 18:17:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2020-12-22 18:17:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 18:17:10,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:10,011 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:10,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 18:17:10,225 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:10,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1336921525, now seen corresponding path program 2 times [2020-12-22 18:17:10,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:10,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106709634] [2020-12-22 18:17:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:10,255 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:10,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027973665] [2020-12-22 18:17:10,255 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:10,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:17:10,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:10,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:17:10,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-12-22 18:17:11,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106709634] [2020-12-22 18:17:11,077 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:11,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027973665] [2020-12-22 18:17:11,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:11,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 18:17:11,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29127196] [2020-12-22 18:17:11,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 18:17:11,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 18:17:11,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:17:11,079 INFO L87 Difference]: Start difference. First operand 736 states and 913 transitions. Second operand 11 states. [2020-12-22 18:17:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:11,277 INFO L93 Difference]: Finished difference Result 1425 states and 1782 transitions. [2020-12-22 18:17:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 18:17:11,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-12-22 18:17:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:11,282 INFO L225 Difference]: With dead ends: 1425 [2020-12-22 18:17:11,282 INFO L226 Difference]: Without dead ends: 740 [2020-12-22 18:17:11,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:17:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-12-22 18:17:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2020-12-22 18:17:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-12-22 18:17:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 917 transitions. [2020-12-22 18:17:11,313 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 917 transitions. Word has length 197 [2020-12-22 18:17:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:11,313 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 917 transitions. [2020-12-22 18:17:11,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 18:17:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 917 transitions. [2020-12-22 18:17:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 18:17:11,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:11,315 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:11,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 18:17:11,531 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:17:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1628837737, now seen corresponding path program 3 times [2020-12-22 18:17:11,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:11,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497668874] [2020-12-22 18:17:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:11,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:11,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605111239] [2020-12-22 18:17:11,555 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true