/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_test10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:16:37,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:16:37,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:16:37,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:16:37,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:16:37,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:16:37,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:16:37,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:16:37,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:16:37,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:16:37,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:16:37,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:16:37,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:16:37,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:16:37,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:16:37,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:16:37,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:16:37,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:16:37,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:16:37,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:16:37,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:16:37,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:16:37,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:16:37,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:16:37,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:16:37,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:16:37,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:16:37,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:16:37,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:16:37,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:16:37,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:16:37,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:16:37,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:16:37,845 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:16:37,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:16:37,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:16:37,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:16:37,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:16:37,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:16:37,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:16:37,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:16:37,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:16:37,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:16:37,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:16:37,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:16:37,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:16:37,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:16:37,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:16:37,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:16:37,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:16:37,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:16:37,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:16:37,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:16:37,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:16:37,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:16:38,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:16:38,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:16:38,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:16:38,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:16:38,363 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:16:38,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2020-12-22 18:16:38,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab544dd39/73da555e7ec5482595b324a429a4cb09/FLAG5bd17855c [2020-12-22 18:16:39,302 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:16:39,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2020-12-22 18:16:39,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab544dd39/73da555e7ec5482595b324a429a4cb09/FLAG5bd17855c [2020-12-22 18:16:39,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab544dd39/73da555e7ec5482595b324a429a4cb09 [2020-12-22 18:16:39,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:16:39,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:16:39,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:16:39,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:16:39,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:16:39,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:16:39" (1/1) ... [2020-12-22 18:16:39,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6545408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:39, skipping insertion in model container [2020-12-22 18:16:39,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:16:39" (1/1) ... [2020-12-22 18:16:39,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:16:39,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:16:40,098 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_test10-1.i[33022,33035] [2020-12-22 18:16:40,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:16:40,521 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:16:40,559 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_test10-1.i[33022,33035] [2020-12-22 18:16:40,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:16:40,844 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:16:40,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40 WrapperNode [2020-12-22 18:16:40,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:16:40,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:16:40,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:16:40,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:16:40,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:40,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:16:41,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:16:41,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:16:41,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:16:41,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (1/1) ... [2020-12-22 18:16:41,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:16:41,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:16:41,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:16:41,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:16:41,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (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 18:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 18:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:16:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:16:44,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:16:44,093 INFO L299 CfgBuilder]: Removed 207 assume(true) statements. [2020-12-22 18:16:44,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:16:44 BoogieIcfgContainer [2020-12-22 18:16:44,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:16:44,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:16:44,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:16:44,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:16:44,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:16:39" (1/3) ... [2020-12-22 18:16:44,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317bb1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:16:44, skipping insertion in model container [2020-12-22 18:16:44,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:16:40" (2/3) ... [2020-12-22 18:16:44,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317bb1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:16:44, skipping insertion in model container [2020-12-22 18:16:44,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:16:44" (3/3) ... [2020-12-22 18:16:44,107 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2020-12-22 18:16:44,114 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:16:44,121 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-22 18:16:44,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-22 18:16:44,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:16:44,178 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:16:44,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:16:44,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:16:44,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:16:44,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:16:44,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:16:44,179 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:16:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states. [2020-12-22 18:16:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:16:44,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:44,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:16:44,216 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 18:16:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:44,224 INFO L82 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2020-12-22 18:16:44,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:44,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172782599] [2020-12-22 18:16:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:44,429 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 18:16:44,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172782599] [2020-12-22 18:16:44,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:44,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:16:44,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116671843] [2020-12-22 18:16:44,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:16:44,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:44,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:16:44,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:16:44,473 INFO L87 Difference]: Start difference. First operand 470 states. Second operand 2 states. [2020-12-22 18:16:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:44,551 INFO L93 Difference]: Finished difference Result 938 states and 1580 transitions. [2020-12-22 18:16:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:16:44,553 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 18:16:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:44,572 INFO L225 Difference]: With dead ends: 938 [2020-12-22 18:16:44,572 INFO L226 Difference]: Without dead ends: 465 [2020-12-22 18:16:44,579 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 18:16:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-12-22 18:16:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-12-22 18:16:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 18:16:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2020-12-22 18:16:44,685 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2020-12-22 18:16:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:44,685 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2020-12-22 18:16:44,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:16:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2020-12-22 18:16:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:16:44,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:44,689 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 18:16:44,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:16:44,690 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 18:16:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:44,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2020-12-22 18:16:44,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:44,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299270485] [2020-12-22 18:16:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:44,848 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 18:16:44,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299270485] [2020-12-22 18:16:44,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:44,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:44,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358503436] [2020-12-22 18:16:44,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:44,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:44,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:44,855 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand 4 states. [2020-12-22 18:16:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:45,618 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2020-12-22 18:16:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:45,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 18:16:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:45,623 INFO L225 Difference]: With dead ends: 831 [2020-12-22 18:16:45,623 INFO L226 Difference]: Without dead ends: 540 [2020-12-22 18:16:45,626 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 18:16:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-12-22 18:16:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2020-12-22 18:16:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-12-22 18:16:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2020-12-22 18:16:45,669 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2020-12-22 18:16:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:45,672 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2020-12-22 18:16:45,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2020-12-22 18:16:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:45,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:45,683 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 18:16:45,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:16:45,685 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 18:16:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2020-12-22 18:16:45,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:45,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314057725] [2020-12-22 18:16:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:45,759 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:45,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090822551] [2020-12-22 18:16:45,760 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 18:16:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:46,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:46,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:46,323 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 18:16:46,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314057725] [2020-12-22 18:16:46,324 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:46,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090822551] [2020-12-22 18:16:46,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:46,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:46,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861582404] [2020-12-22 18:16:46,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:46,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:46,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:46,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:46,328 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand 3 states. [2020-12-22 18:16:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:46,447 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2020-12-22 18:16:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:46,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:16:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:46,451 INFO L225 Difference]: With dead ends: 951 [2020-12-22 18:16:46,451 INFO L226 Difference]: Without dead ends: 488 [2020-12-22 18:16:46,453 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 18:16:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-12-22 18:16:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2020-12-22 18:16:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-12-22 18:16:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2020-12-22 18:16:46,470 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2020-12-22 18:16:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:46,470 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2020-12-22 18:16:46,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2020-12-22 18:16:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:46,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:46,476 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 18:16:46,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:16:46,690 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 18:16:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2020-12-22 18:16:46,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:46,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106117091] [2020-12-22 18:16:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:46,722 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:46,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22963633] [2020-12-22 18:16:46,723 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 18:16:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:47,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:47,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:47,179 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 18:16:47,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106117091] [2020-12-22 18:16:47,179 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:47,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22963633] [2020-12-22 18:16:47,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:47,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:47,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931471820] [2020-12-22 18:16:47,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:47,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:47,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:47,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:47,182 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand 3 states. [2020-12-22 18:16:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:47,287 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2020-12-22 18:16:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:47,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:16:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:47,292 INFO L225 Difference]: With dead ends: 787 [2020-12-22 18:16:47,292 INFO L226 Difference]: Without dead ends: 508 [2020-12-22 18:16:47,294 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 18:16:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-22 18:16:47,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2020-12-22 18:16:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-22 18:16:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2020-12-22 18:16:47,310 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2020-12-22 18:16:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:47,311 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2020-12-22 18:16:47,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2020-12-22 18:16:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:47,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:47,314 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 18:16:47,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:47,529 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 18:16:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2020-12-22 18:16:47,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:47,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885301953] [2020-12-22 18:16:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:47,585 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:47,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114692423] [2020-12-22 18:16:47,589 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 18:16:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:47,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:47,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:48,042 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 18:16:48,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885301953] [2020-12-22 18:16:48,043 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:48,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114692423] [2020-12-22 18:16:48,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:48,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:48,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143547087] [2020-12-22 18:16:48,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:48,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:48,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:48,052 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand 4 states. [2020-12-22 18:16:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:48,211 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2020-12-22 18:16:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:48,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:16:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:48,216 INFO L225 Difference]: With dead ends: 1086 [2020-12-22 18:16:48,217 INFO L226 Difference]: Without dead ends: 583 [2020-12-22 18:16:48,218 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 18:16:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-22 18:16:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2020-12-22 18:16:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-22 18:16:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2020-12-22 18:16:48,237 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2020-12-22 18:16:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:48,238 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2020-12-22 18:16:48,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2020-12-22 18:16:48,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:48,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:48,240 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 18:16:48,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:48,454 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 18:16:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2020-12-22 18:16:48,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:48,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969604633] [2020-12-22 18:16:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:48,479 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:48,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755820139] [2020-12-22 18:16:48,480 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 18:16:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:48,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:48,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:48,913 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 18:16:48,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969604633] [2020-12-22 18:16:48,913 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:48,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755820139] [2020-12-22 18:16:48,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:48,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:48,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315712205] [2020-12-22 18:16:48,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:48,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:48,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:48,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:48,918 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand 4 states. [2020-12-22 18:16:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:49,030 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2020-12-22 18:16:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:49,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:16:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:49,035 INFO L225 Difference]: With dead ends: 761 [2020-12-22 18:16:49,035 INFO L226 Difference]: Without dead ends: 480 [2020-12-22 18:16:49,037 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 18:16:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-12-22 18:16:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2020-12-22 18:16:49,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-12-22 18:16:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2020-12-22 18:16:49,055 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2020-12-22 18:16:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:49,057 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2020-12-22 18:16:49,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2020-12-22 18:16:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:16:49,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:49,062 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 18:16:49,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:49,276 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 18:16:49,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:49,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2020-12-22 18:16:49,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:49,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236657611] [2020-12-22 18:16:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:49,323 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:49,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151439809] [2020-12-22 18:16:49,324 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 18:16:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:16:49,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:49,748 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 18:16:49,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236657611] [2020-12-22 18:16:49,748 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:49,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151439809] [2020-12-22 18:16:49,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:49,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:49,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416798567] [2020-12-22 18:16:49,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:49,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:49,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:49,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:49,754 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand 3 states. [2020-12-22 18:16:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:49,877 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2020-12-22 18:16:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:49,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:16:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:49,883 INFO L225 Difference]: With dead ends: 1231 [2020-12-22 18:16:49,883 INFO L226 Difference]: Without dead ends: 756 [2020-12-22 18:16:49,884 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 18:16:49,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-12-22 18:16:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2020-12-22 18:16:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-12-22 18:16:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2020-12-22 18:16:49,911 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2020-12-22 18:16:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:49,911 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2020-12-22 18:16:49,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2020-12-22 18:16:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 18:16:49,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:49,913 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 18:16:50,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:16:50,127 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 18:16:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2020-12-22 18:16:50,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:50,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197870590] [2020-12-22 18:16:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:50,152 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:50,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014994352] [2020-12-22 18:16:50,153 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 18:16:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:50,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:50,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:50,667 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 18:16:50,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197870590] [2020-12-22 18:16:50,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:50,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014994352] [2020-12-22 18:16:50,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:50,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:50,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370162184] [2020-12-22 18:16:50,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:50,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:50,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:50,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:50,671 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand 3 states. [2020-12-22 18:16:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:50,736 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2020-12-22 18:16:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:50,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 18:16:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:50,742 INFO L225 Difference]: With dead ends: 1400 [2020-12-22 18:16:50,743 INFO L226 Difference]: Without dead ends: 727 [2020-12-22 18:16:50,744 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 18:16:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-12-22 18:16:50,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2020-12-22 18:16:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-12-22 18:16:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2020-12-22 18:16:50,776 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2020-12-22 18:16:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:50,778 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2020-12-22 18:16:50,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2020-12-22 18:16:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:16:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:50,782 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 18:16:50,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:50,996 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 18:16:50,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:50,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2020-12-22 18:16:50,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:50,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862070607] [2020-12-22 18:16:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:51,019 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:51,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559951400] [2020-12-22 18:16:51,019 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 18:16:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:51,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:16:51,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:51,493 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 18:16:51,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862070607] [2020-12-22 18:16:51,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:51,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559951400] [2020-12-22 18:16:51,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:16:51,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 18:16:51,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776034163] [2020-12-22 18:16:51,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:51,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:51,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:51,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:51,499 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand 4 states. [2020-12-22 18:16:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:51,585 INFO L93 Difference]: Finished difference Result 1411 states and 1820 transitions. [2020-12-22 18:16:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:51,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:16:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:51,590 INFO L225 Difference]: With dead ends: 1411 [2020-12-22 18:16:51,591 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:16:51,592 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 18:16:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:16:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:16:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:16:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 942 transitions. [2020-12-22 18:16:51,615 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 942 transitions. Word has length 106 [2020-12-22 18:16:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:51,615 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 942 transitions. [2020-12-22 18:16:51,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 942 transitions. [2020-12-22 18:16:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 18:16:51,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:51,617 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 18:16:51,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:51,832 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 18:16:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:51,833 INFO L82 PathProgramCache]: Analyzing trace with hash -462744993, now seen corresponding path program 2 times [2020-12-22 18:16:51,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:51,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748601322] [2020-12-22 18:16:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:51,851 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:51,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513521553] [2020-12-22 18:16:51,852 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 18:16:52,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:16:52,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:16:52,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:16:52,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:52,318 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 18:16:52,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748601322] [2020-12-22 18:16:52,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:52,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513521553] [2020-12-22 18:16:52,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:16:52,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 18:16:52,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399567007] [2020-12-22 18:16:52,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:16:52,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:52,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:16:52,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:16:52,322 INFO L87 Difference]: Start difference. First operand 733 states and 942 transitions. Second operand 5 states. [2020-12-22 18:16:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:52,436 INFO L93 Difference]: Finished difference Result 1422 states and 1831 transitions. [2020-12-22 18:16:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:16:52,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 18:16:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:52,442 INFO L225 Difference]: With dead ends: 1422 [2020-12-22 18:16:52,442 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:16:52,444 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 18:16:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:16:52,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:16:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:16:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 948 transitions. [2020-12-22 18:16:52,468 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 948 transitions. Word has length 108 [2020-12-22 18:16:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:52,469 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 948 transitions. [2020-12-22 18:16:52,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:16:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 948 transitions. [2020-12-22 18:16:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 18:16:52,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:52,471 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 18:16:52,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:16:52,686 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 18:16:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:52,687 INFO L82 PathProgramCache]: Analyzing trace with hash 87417216, now seen corresponding path program 3 times [2020-12-22 18:16:52,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:52,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667744486] [2020-12-22 18:16:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:52,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:52,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026888977] [2020-12-22 18:16:52,717 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 18:16:53,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:16:53,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:16:53,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:16:53,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:53,124 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 18:16:53,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:16:53,133 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:16:53,134 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:16:53,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 18:16:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:16:53,194 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 18:16:53,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:16:53,200 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:16:53,203 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 18:16:53,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:71, output treesize:3 [2020-12-22 18:16:53,278 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 18:16:53,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667744486] [2020-12-22 18:16:53,278 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:53,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026888977] [2020-12-22 18:16:53,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:53,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:16:53,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217199493] [2020-12-22 18:16:53,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:16:53,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:53,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:16:53,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:16:53,281 INFO L87 Difference]: Start difference. First operand 739 states and 948 transitions. Second operand 5 states. [2020-12-22 18:16:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:54,533 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2020-12-22 18:16:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:16:54,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 18:16:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:54,538 INFO L225 Difference]: With dead ends: 1382 [2020-12-22 18:16:54,538 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:16:54,540 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 18:16:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:16:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:16:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:16:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 947 transitions. [2020-12-22 18:16:54,563 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 947 transitions. Word has length 110 [2020-12-22 18:16:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:54,563 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 947 transitions. [2020-12-22 18:16:54,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:16:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 947 transitions. [2020-12-22 18:16:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:54,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:54,566 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 18:16:54,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:54,780 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 18:16:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2117457625, now seen corresponding path program 1 times [2020-12-22 18:16:54,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:54,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713029667] [2020-12-22 18:16:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:54,833 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:54,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767014779] [2020-12-22 18:16:54,833 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 18:16:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:55,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:55,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:55,355 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 18:16:55,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713029667] [2020-12-22 18:16:55,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:55,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767014779] [2020-12-22 18:16:55,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:55,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:16:55,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852408173] [2020-12-22 18:16:55,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:16:55,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:55,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:16:55,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:16:55,363 INFO L87 Difference]: Start difference. First operand 739 states and 947 transitions. Second operand 3 states. [2020-12-22 18:16:55,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:55,489 INFO L93 Difference]: Finished difference Result 1502 states and 1935 transitions. [2020-12-22 18:16:55,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:16:55,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 18:16:55,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:55,494 INFO L225 Difference]: With dead ends: 1502 [2020-12-22 18:16:55,494 INFO L226 Difference]: Without dead ends: 781 [2020-12-22 18:16:55,496 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 18:16:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-12-22 18:16:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 779. [2020-12-22 18:16:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-12-22 18:16:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 987 transitions. [2020-12-22 18:16:55,519 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 987 transitions. Word has length 157 [2020-12-22 18:16:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:55,519 INFO L481 AbstractCegarLoop]: Abstraction has 779 states and 987 transitions. [2020-12-22 18:16:55,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:16:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 987 transitions. [2020-12-22 18:16:55,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:55,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:55,522 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 18:16:55,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:55,737 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 18:16:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1572585051, now seen corresponding path program 1 times [2020-12-22 18:16:55,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:55,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666073222] [2020-12-22 18:16:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:55,759 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:55,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913056636] [2020-12-22 18:16:55,760 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 18:16:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:56,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:16:56,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:56,305 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 18:16:56,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666073222] [2020-12-22 18:16:56,305 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:56,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913056636] [2020-12-22 18:16:56,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:56,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:56,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591917261] [2020-12-22 18:16:56,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:56,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:56,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:56,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:56,308 INFO L87 Difference]: Start difference. First operand 779 states and 987 transitions. Second operand 4 states. [2020-12-22 18:16:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:56,442 INFO L93 Difference]: Finished difference Result 1496 states and 1900 transitions. [2020-12-22 18:16:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:56,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:16:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:56,447 INFO L225 Difference]: With dead ends: 1496 [2020-12-22 18:16:56,448 INFO L226 Difference]: Without dead ends: 753 [2020-12-22 18:16:56,450 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 18:16:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-12-22 18:16:56,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2020-12-22 18:16:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-12-22 18:16:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 945 transitions. [2020-12-22 18:16:56,478 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 945 transitions. Word has length 157 [2020-12-22 18:16:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:56,478 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 945 transitions. [2020-12-22 18:16:56,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:56,478 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 945 transitions. [2020-12-22 18:16:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:56,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:56,481 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 18:16:56,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:16:56,696 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 18:16:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash 94293941, now seen corresponding path program 1 times [2020-12-22 18:16:56,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:56,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437564466] [2020-12-22 18:16:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:56,716 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:56,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485108476] [2020-12-22 18:16:56,716 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 18:16:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:57,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:16:57,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:57,179 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 18:16:57,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437564466] [2020-12-22 18:16:57,179 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:57,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485108476] [2020-12-22 18:16:57,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:57,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:16:57,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249408090] [2020-12-22 18:16:57,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:16:57,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:57,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:16:57,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:16:57,182 INFO L87 Difference]: Start difference. First operand 751 states and 945 transitions. Second operand 5 states. [2020-12-22 18:16:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:57,397 INFO L93 Difference]: Finished difference Result 2209 states and 2786 transitions. [2020-12-22 18:16:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:16:57,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-12-22 18:16:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:57,406 INFO L225 Difference]: With dead ends: 2209 [2020-12-22 18:16:57,406 INFO L226 Difference]: Without dead ends: 1496 [2020-12-22 18:16:57,409 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 18:16:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-12-22 18:16:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 797. [2020-12-22 18:16:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-12-22 18:16:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 995 transitions. [2020-12-22 18:16:57,442 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 995 transitions. Word has length 157 [2020-12-22 18:16:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:57,443 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 995 transitions. [2020-12-22 18:16:57,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:16:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 995 transitions. [2020-12-22 18:16:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:57,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:57,445 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 18:16:57,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:16:57,659 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 18:16:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:57,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1994860229, now seen corresponding path program 1 times [2020-12-22 18:16:57,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:57,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864909132] [2020-12-22 18:16:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:57,677 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:57,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121738114] [2020-12-22 18:16:57,678 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 18:16:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:58,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:16:58,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:58,171 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 18:16:58,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864909132] [2020-12-22 18:16:58,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:58,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121738114] [2020-12-22 18:16:58,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:16:58,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:16:58,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237001158] [2020-12-22 18:16:58,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:16:58,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:16:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:16:58,174 INFO L87 Difference]: Start difference. First operand 797 states and 995 transitions. Second operand 4 states. [2020-12-22 18:16:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:58,252 INFO L93 Difference]: Finished difference Result 1503 states and 1887 transitions. [2020-12-22 18:16:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:16:58,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:16:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:58,257 INFO L225 Difference]: With dead ends: 1503 [2020-12-22 18:16:58,257 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:16:58,259 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 18:16:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:16:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:16:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:16:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 917 transitions. [2020-12-22 18:16:58,285 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 917 transitions. Word has length 157 [2020-12-22 18:16:58,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:58,285 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 917 transitions. [2020-12-22 18:16:58,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:16:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 917 transitions. [2020-12-22 18:16:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:16:58,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:58,288 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 18:16:58,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:16:58,503 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 18:16:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash 639166515, now seen corresponding path program 1 times [2020-12-22 18:16:58,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:58,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450376904] [2020-12-22 18:16:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:58,522 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:58,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949542634] [2020-12-22 18:16:58,522 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 18:16:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:16:58,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 18:16:58,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:16:59,131 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 18:16:59,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450376904] [2020-12-22 18:16:59,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:16:59,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949542634] [2020-12-22 18:16:59,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:16:59,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:16:59,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773527526] [2020-12-22 18:16:59,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:16:59,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:16:59,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:16:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:16:59,134 INFO L87 Difference]: Start difference. First operand 733 states and 917 transitions. Second operand 6 states. [2020-12-22 18:16:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:16:59,257 INFO L93 Difference]: Finished difference Result 1424 states and 1796 transitions. [2020-12-22 18:16:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:16:59,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-12-22 18:16:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:16:59,262 INFO L225 Difference]: With dead ends: 1424 [2020-12-22 18:16:59,262 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:16:59,264 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 18:16:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:16:59,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:16:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:16:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 923 transitions. [2020-12-22 18:16:59,292 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 923 transitions. Word has length 157 [2020-12-22 18:16:59,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:16:59,292 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 923 transitions. [2020-12-22 18:16:59,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:16:59,292 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 923 transitions. [2020-12-22 18:16:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 18:16:59,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:16:59,295 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 18:16:59,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:16:59,508 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 18:16:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:16:59,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1050888114, now seen corresponding path program 2 times [2020-12-22 18:16:59,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:16:59,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084324187] [2020-12-22 18:16:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:16:59,532 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:16:59,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814542327] [2020-12-22 18:16:59,533 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 18:16:59,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:16:59,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:16:59,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:16:59,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:00,148 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 18:17:00,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084324187] [2020-12-22 18:17:00,149 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:00,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814542327] [2020-12-22 18:17:00,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:00,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:17:00,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517554042] [2020-12-22 18:17:00,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:17:00,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:00,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:17:00,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:17:00,151 INFO L87 Difference]: Start difference. First operand 739 states and 923 transitions. Second operand 7 states. [2020-12-22 18:17:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:00,273 INFO L93 Difference]: Finished difference Result 1435 states and 1807 transitions. [2020-12-22 18:17:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:17:00,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-12-22 18:17:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:00,277 INFO L225 Difference]: With dead ends: 1435 [2020-12-22 18:17:00,278 INFO L226 Difference]: Without dead ends: 745 [2020-12-22 18:17:00,279 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 18:17:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-22 18:17:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2020-12-22 18:17:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-12-22 18:17:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 929 transitions. [2020-12-22 18:17:00,308 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 929 transitions. Word has length 159 [2020-12-22 18:17:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:00,308 INFO L481 AbstractCegarLoop]: Abstraction has 745 states and 929 transitions. [2020-12-22 18:17:00,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:17:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 929 transitions. [2020-12-22 18:17:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 18:17:00,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:00,311 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 18:17:00,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 18:17:00,525 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 18:17:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash 770488787, now seen corresponding path program 3 times [2020-12-22 18:17:00,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:00,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186818856] [2020-12-22 18:17:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:00,546 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:00,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264550352] [2020-12-22 18:17:00,546 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 18:17:00,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:17:00,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:00,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:17:00,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:01,077 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 18:17:01,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186818856] [2020-12-22 18:17:01,078 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:01,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264550352] [2020-12-22 18:17:01,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:17:01,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:17:01,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825961018] [2020-12-22 18:17:01,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:17:01,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:01,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:17:01,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:17:01,080 INFO L87 Difference]: Start difference. First operand 745 states and 929 transitions. Second operand 3 states. [2020-12-22 18:17:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:01,187 INFO L93 Difference]: Finished difference Result 1749 states and 2217 transitions. [2020-12-22 18:17:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:17:01,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 18:17:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:01,193 INFO L225 Difference]: With dead ends: 1749 [2020-12-22 18:17:01,193 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 18:17:01,195 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 18:17:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 18:17:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 906. [2020-12-22 18:17:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 18:17:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1156 transitions. [2020-12-22 18:17:01,230 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1156 transitions. Word has length 161 [2020-12-22 18:17:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:01,230 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1156 transitions. [2020-12-22 18:17:01,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:17:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1156 transitions. [2020-12-22 18:17:01,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 18:17:01,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:01,233 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 18:17:01,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 18:17:01,447 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 18:17:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:01,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1484056676, now seen corresponding path program 1 times [2020-12-22 18:17:01,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:01,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658274105] [2020-12-22 18:17:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:01,467 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:01,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474417267] [2020-12-22 18:17:01,468 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 18:17:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:17:01,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:17:01,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:02,185 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 18:17:02,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658274105] [2020-12-22 18:17:02,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:02,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474417267] [2020-12-22 18:17:02,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:02,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 18:17:02,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432977079] [2020-12-22 18:17:02,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:17:02,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:02,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:17:02,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:17:02,188 INFO L87 Difference]: Start difference. First operand 906 states and 1156 transitions. Second operand 8 states. [2020-12-22 18:17:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:02,326 INFO L93 Difference]: Finished difference Result 1770 states and 2275 transitions. [2020-12-22 18:17:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:17:02,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 178 [2020-12-22 18:17:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:02,331 INFO L225 Difference]: With dead ends: 1770 [2020-12-22 18:17:02,332 INFO L226 Difference]: Without dead ends: 912 [2020-12-22 18:17:02,333 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 18:17:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-12-22 18:17:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2020-12-22 18:17:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-12-22 18:17:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1162 transitions. [2020-12-22 18:17:02,366 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1162 transitions. Word has length 178 [2020-12-22 18:17:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:02,366 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1162 transitions. [2020-12-22 18:17:02,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:17:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1162 transitions. [2020-12-22 18:17:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-22 18:17:02,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:02,369 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 18:17:02,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:02,585 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 18:17:02,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:02,586 INFO L82 PathProgramCache]: Analyzing trace with hash -453644734, now seen corresponding path program 2 times [2020-12-22 18:17:02,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:02,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313354740] [2020-12-22 18:17:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:02,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:02,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690811774] [2020-12-22 18:17:02,606 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 18:17:03,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:17:03,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:03,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:17:03,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:03,293 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 18:17:03,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313354740] [2020-12-22 18:17:03,294 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:03,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690811774] [2020-12-22 18:17:03,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:03,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 18:17:03,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101527198] [2020-12-22 18:17:03,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 18:17:03,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:03,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 18:17:03,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:17:03,296 INFO L87 Difference]: Start difference. First operand 912 states and 1162 transitions. Second operand 9 states. [2020-12-22 18:17:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:03,449 INFO L93 Difference]: Finished difference Result 1781 states and 2286 transitions. [2020-12-22 18:17:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:17:03,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-12-22 18:17:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:03,456 INFO L225 Difference]: With dead ends: 1781 [2020-12-22 18:17:03,456 INFO L226 Difference]: Without dead ends: 918 [2020-12-22 18:17:03,458 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 18:17:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-12-22 18:17:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2020-12-22 18:17:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-12-22 18:17:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1168 transitions. [2020-12-22 18:17:03,497 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1168 transitions. Word has length 182 [2020-12-22 18:17:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:03,497 INFO L481 AbstractCegarLoop]: Abstraction has 918 states and 1168 transitions. [2020-12-22 18:17:03,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 18:17:03,497 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1168 transitions. [2020-12-22 18:17:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 18:17:03,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:03,500 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 18:17:03,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:03,714 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 18:17:03,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:03,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1986963428, now seen corresponding path program 3 times [2020-12-22 18:17:03,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:03,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249332252] [2020-12-22 18:17:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:03,738 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:03,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765315123] [2020-12-22 18:17:03,738 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 18:17:04,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:17:04,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:04,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:17:04,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:04,506 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 18:17:04,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249332252] [2020-12-22 18:17:04,507 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:04,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765315123] [2020-12-22 18:17:04,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:17:04,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:17:04,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271972809] [2020-12-22 18:17:04,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:17:04,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:04,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:17:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:17:04,509 INFO L87 Difference]: Start difference. First operand 918 states and 1168 transitions. Second operand 4 states. [2020-12-22 18:17:05,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:05,065 INFO L93 Difference]: Finished difference Result 1509 states and 1921 transitions. [2020-12-22 18:17:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:17:05,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-12-22 18:17:05,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:05,069 INFO L225 Difference]: With dead ends: 1509 [2020-12-22 18:17:05,070 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 18:17:05,071 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 18:17:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 18:17:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 18:17:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 18:17:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 909 transitions. [2020-12-22 18:17:05,099 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 909 transitions. Word has length 186 [2020-12-22 18:17:05,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:05,099 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 909 transitions. [2020-12-22 18:17:05,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:17:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 909 transitions. [2020-12-22 18:17:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 18:17:05,102 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:05,102 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 18:17:05,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:17:05,317 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 18:17:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1622468887, now seen corresponding path program 1 times [2020-12-22 18:17:05,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:05,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615456651] [2020-12-22 18:17:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:05,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:05,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764522985] [2020-12-22 18:17:05,336 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 18:17:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:17:05,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 18:17:05,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:06,024 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 18:17:06,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615456651] [2020-12-22 18:17:06,024 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:06,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764522985] [2020-12-22 18:17:06,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:06,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 18:17:06,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551443212] [2020-12-22 18:17:06,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 18:17:06,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:06,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 18:17:06,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:17:06,027 INFO L87 Difference]: Start difference. First operand 732 states and 909 transitions. Second operand 10 states. [2020-12-22 18:17:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:06,196 INFO L93 Difference]: Finished difference Result 1418 states and 1775 transitions. [2020-12-22 18:17:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:17:06,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-12-22 18:17:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:06,201 INFO L225 Difference]: With dead ends: 1418 [2020-12-22 18:17:06,201 INFO L226 Difference]: Without dead ends: 736 [2020-12-22 18:17:06,203 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 18:17:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-12-22 18:17:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2020-12-22 18:17:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-12-22 18:17:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2020-12-22 18:17:06,232 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 193 [2020-12-22 18:17:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:06,233 INFO L481 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2020-12-22 18:17:06,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 18:17:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2020-12-22 18:17:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 18:17:06,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:06,236 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 18:17:06,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 18:17:06,451 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 18:17:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:06,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1336921525, now seen corresponding path program 2 times [2020-12-22 18:17:06,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:06,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932941070] [2020-12-22 18:17:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:06,469 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:06,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470881188] [2020-12-22 18:17:06,470 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 18:17:06,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:17:06,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:17:06,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:17:06,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:17:07,233 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 18:17:07,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932941070] [2020-12-22 18:17:07,233 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:17:07,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470881188] [2020-12-22 18:17:07,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:17:07,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 18:17:07,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442116229] [2020-12-22 18:17:07,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 18:17:07,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:17:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 18:17:07,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:17:07,235 INFO L87 Difference]: Start difference. First operand 736 states and 913 transitions. Second operand 11 states. [2020-12-22 18:17:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:17:07,421 INFO L93 Difference]: Finished difference Result 1425 states and 1782 transitions. [2020-12-22 18:17:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 18:17:07,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-12-22 18:17:07,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:17:07,428 INFO L225 Difference]: With dead ends: 1425 [2020-12-22 18:17:07,428 INFO L226 Difference]: Without dead ends: 740 [2020-12-22 18:17:07,430 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 18:17:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-12-22 18:17:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2020-12-22 18:17:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-12-22 18:17:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 917 transitions. [2020-12-22 18:17:07,460 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 917 transitions. Word has length 197 [2020-12-22 18:17:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:17:07,461 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 917 transitions. [2020-12-22 18:17:07,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 18:17:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 917 transitions. [2020-12-22 18:17:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 18:17:07,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:17:07,463 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 18:17:07,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 18:17:07,677 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 18:17:07,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:17:07,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1628837737, now seen corresponding path program 3 times [2020-12-22 18:17:07,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:17:07,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268179712] [2020-12-22 18:17:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:17:07,696 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:17:07,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62357827] [2020-12-22 18:17:07,696 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