/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_SAX_test6-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:36:22,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:36:22,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:36:22,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:36:22,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:36:22,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:36:22,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:36:22,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:36:22,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:36:22,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:36:22,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:36:22,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:36:22,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:36:22,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:36:22,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:36:22,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:36:22,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:36:22,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:36:22,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:36:22,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:36:22,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:36:22,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:36:22,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:36:22,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:36:22,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:36:22,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:36:22,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:36:22,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:36:22,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:36:22,488 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:36:22,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:36:22,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:36:22,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:36:22,494 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:36:22,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:36:22,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:36:22,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:36:22,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:36:22,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:36:22,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:36:22,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:36:22,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:36:22,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:36:22,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:36:22,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:36:22,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:36:22,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:36:22,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:36:22,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:36:22,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:36:22,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:36:22,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:36:22,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:36:22,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:36:22,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:36:22,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:36:23,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:36:23,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:36:23,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:36:23,037 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:36:23,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2020-12-22 18:36:23,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2954a90c/e5b4d5fcdebf4f419597d1033cf48d3f/FLAG070f0e66f [2020-12-22 18:36:23,987 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:36:23,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2020-12-22 18:36:24,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2954a90c/e5b4d5fcdebf4f419597d1033cf48d3f/FLAG070f0e66f [2020-12-22 18:36:24,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2954a90c/e5b4d5fcdebf4f419597d1033cf48d3f [2020-12-22 18:36:24,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:36:24,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:36:24,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:36:24,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:36:24,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:36:24,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:36:24" (1/1) ... [2020-12-22 18:36:24,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0829f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:24, skipping insertion in model container [2020-12-22 18:36:24,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:36:24" (1/1) ... [2020-12-22 18:36:24,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:36:24,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:36:24,838 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_SAX_test6-1.i[44118,44131] [2020-12-22 18:36:24,855 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_SAX_test6-1.i[44660,44673] [2020-12-22 18:36:24,969 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_SAX_test6-1.i[56247,56260] [2020-12-22 18:36:24,971 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_SAX_test6-1.i[56368,56381] [2020-12-22 18:36:24,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:36:25,008 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:36:25,076 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_SAX_test6-1.i[44118,44131] [2020-12-22 18:36:25,084 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_SAX_test6-1.i[44660,44673] [2020-12-22 18:36:25,264 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_SAX_test6-1.i[56247,56260] [2020-12-22 18:36:25,265 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_SAX_test6-1.i[56368,56381] [2020-12-22 18:36:25,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:36:25,468 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:36:25,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25 WrapperNode [2020-12-22 18:36:25,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:36:25,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:36:25,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:36:25,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:36:25,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:36:25,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:36:25,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:36:25,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:36:25,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (1/1) ... [2020-12-22 18:36:25,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:36:25,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:36:25,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:36:25,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:36:25,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (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 18:36:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:36:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 18:36:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:36:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:36:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:36:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:36:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:36:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:36:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:36:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:36:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:36:28,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:36:28,136 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2020-12-22 18:36:28,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:36:28 BoogieIcfgContainer [2020-12-22 18:36:28,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:36:28,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:36:28,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:36:28,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:36:28,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:36:24" (1/3) ... [2020-12-22 18:36:28,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afa2ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:36:28, skipping insertion in model container [2020-12-22 18:36:28,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:36:25" (2/3) ... [2020-12-22 18:36:28,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afa2ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:36:28, skipping insertion in model container [2020-12-22 18:36:28,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:36:28" (3/3) ... [2020-12-22 18:36:28,148 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-1.i [2020-12-22 18:36:28,155 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:36:28,161 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-22 18:36:28,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-22 18:36:28,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:36:28,212 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:36:28,212 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:36:28,212 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:36:28,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:36:28,213 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:36:28,213 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:36:28,213 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:36:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2020-12-22 18:36:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 18:36:28,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:28,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:36:28,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:28,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2020-12-22 18:36:28,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:28,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170730854] [2020-12-22 18:36:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:28,450 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 18:36:28,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170730854] [2020-12-22 18:36:28,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:28,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:36:28,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325858063] [2020-12-22 18:36:28,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:36:28,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:28,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:36:28,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:36:28,478 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 2 states. [2020-12-22 18:36:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:28,531 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2020-12-22 18:36:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:36:28,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 18:36:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:28,552 INFO L225 Difference]: With dead ends: 466 [2020-12-22 18:36:28,552 INFO L226 Difference]: Without dead ends: 227 [2020-12-22 18:36:28,557 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 18:36:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-22 18:36:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-12-22 18:36:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-22 18:36:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2020-12-22 18:36:28,627 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2020-12-22 18:36:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:28,628 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2020-12-22 18:36:28,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:36:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2020-12-22 18:36:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 18:36:28,629 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:28,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:36:28,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:36:28,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:28,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2020-12-22 18:36:28,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:28,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482203622] [2020-12-22 18:36:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:28,798 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 18:36:28,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482203622] [2020-12-22 18:36:28,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:28,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:36:28,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901215527] [2020-12-22 18:36:28,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:36:28,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:28,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:36:28,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:36:28,802 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand 4 states. [2020-12-22 18:36:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:29,460 INFO L93 Difference]: Finished difference Result 479 states and 601 transitions. [2020-12-22 18:36:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:36:29,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 18:36:29,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:29,467 INFO L225 Difference]: With dead ends: 479 [2020-12-22 18:36:29,467 INFO L226 Difference]: Without dead ends: 369 [2020-12-22 18:36:29,470 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 18:36:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-12-22 18:36:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 229. [2020-12-22 18:36:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-12-22 18:36:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2020-12-22 18:36:29,512 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 10 [2020-12-22 18:36:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:29,513 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2020-12-22 18:36:29,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:36:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2020-12-22 18:36:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:36:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:29,516 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 18:36:29,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:36:29,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:29,519 INFO L82 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2020-12-22 18:36:29,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:29,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426712899] [2020-12-22 18:36:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:29,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:29,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186671797] [2020-12-22 18:36:29,578 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 18:36:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:29,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:36:29,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:29,831 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 18:36:29,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426712899] [2020-12-22 18:36:29,833 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:29,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186671797] [2020-12-22 18:36:29,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:29,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:36:29,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620018533] [2020-12-22 18:36:29,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:36:29,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:29,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:36:29,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:36:29,846 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand 3 states. [2020-12-22 18:36:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:29,941 INFO L93 Difference]: Finished difference Result 475 states and 601 transitions. [2020-12-22 18:36:29,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:36:29,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 18:36:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:29,945 INFO L225 Difference]: With dead ends: 475 [2020-12-22 18:36:29,945 INFO L226 Difference]: Without dead ends: 250 [2020-12-22 18:36:29,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 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 18:36:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-22 18:36:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2020-12-22 18:36:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-22 18:36:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2020-12-22 18:36:29,987 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 44 [2020-12-22 18:36:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:29,987 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2020-12-22 18:36:29,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:36:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2020-12-22 18:36:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:36:29,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:29,990 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 18:36:30,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:36:30,206 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2020-12-22 18:36:30,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:30,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040874758] [2020-12-22 18:36:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:30,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:30,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877206145] [2020-12-22 18:36:30,261 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 18:36:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:30,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:36:30,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:30,613 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 18:36:30,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040874758] [2020-12-22 18:36:30,614 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:30,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877206145] [2020-12-22 18:36:30,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:30,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:36:30,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041175738] [2020-12-22 18:36:30,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:36:30,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:30,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:36:30,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:36:30,618 INFO L87 Difference]: Start difference. First operand 249 states and 307 transitions. Second operand 4 states. [2020-12-22 18:36:30,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:30,717 INFO L93 Difference]: Finished difference Result 487 states and 603 transitions. [2020-12-22 18:36:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:36:30,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 18:36:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:30,719 INFO L225 Difference]: With dead ends: 487 [2020-12-22 18:36:30,720 INFO L226 Difference]: Without dead ends: 242 [2020-12-22 18:36:30,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 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 18:36:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-22 18:36:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2020-12-22 18:36:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-22 18:36:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2020-12-22 18:36:30,729 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 44 [2020-12-22 18:36:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:30,729 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2020-12-22 18:36:30,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:36:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2020-12-22 18:36:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:36:30,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:30,731 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 18:36:30,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:36:30,947 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:30,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2020-12-22 18:36:30,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:30,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597247795] [2020-12-22 18:36:30,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:30,969 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:30,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173855600] [2020-12-22 18:36:30,970 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 18:36:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:31,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 18:36:31,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:31,237 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 18:36:31,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597247795] [2020-12-22 18:36:31,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:31,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173855600] [2020-12-22 18:36:31,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:31,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 18:36:31,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902416622] [2020-12-22 18:36:31,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:36:31,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:36:31,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:36:31,240 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand 6 states. [2020-12-22 18:36:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:32,136 INFO L93 Difference]: Finished difference Result 447 states and 550 transitions. [2020-12-22 18:36:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:36:32,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-12-22 18:36:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:32,144 INFO L225 Difference]: With dead ends: 447 [2020-12-22 18:36:32,144 INFO L226 Difference]: Without dead ends: 445 [2020-12-22 18:36:32,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:36:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-12-22 18:36:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 233. [2020-12-22 18:36:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-22 18:36:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2020-12-22 18:36:32,159 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 44 [2020-12-22 18:36:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:32,159 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2020-12-22 18:36:32,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:36:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2020-12-22 18:36:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 18:36:32,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:32,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:36:32,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:36:32,376 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2020-12-22 18:36:32,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:32,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197776247] [2020-12-22 18:36:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:32,421 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:32,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628922598] [2020-12-22 18:36:32,424 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 18:36:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:32,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:36:32,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:32,811 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 18:36:32,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197776247] [2020-12-22 18:36:32,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:32,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628922598] [2020-12-22 18:36:32,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:32,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:36:32,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289536483] [2020-12-22 18:36:32,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:36:32,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:32,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:36:32,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:36:32,822 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand 5 states. [2020-12-22 18:36:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:32,997 INFO L93 Difference]: Finished difference Result 940 states and 1155 transitions. [2020-12-22 18:36:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:36:32,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 18:36:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:33,003 INFO L225 Difference]: With dead ends: 940 [2020-12-22 18:36:33,003 INFO L226 Difference]: Without dead ends: 711 [2020-12-22 18:36:33,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 18:36:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-12-22 18:36:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 325. [2020-12-22 18:36:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-22 18:36:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 395 transitions. [2020-12-22 18:36:33,023 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 395 transitions. Word has length 51 [2020-12-22 18:36:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:33,024 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 395 transitions. [2020-12-22 18:36:33,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:36:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 395 transitions. [2020-12-22 18:36:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 18:36:33,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:33,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:33,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:36:33,241 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:33,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2020-12-22 18:36:33,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:33,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856942479] [2020-12-22 18:36:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:33,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:33,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120348925] [2020-12-22 18:36:33,263 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 18:36:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:33,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:36:33,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:33,576 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 18:36:33,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856942479] [2020-12-22 18:36:33,577 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:33,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120348925] [2020-12-22 18:36:33,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:33,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:36:33,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258478867] [2020-12-22 18:36:33,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:36:33,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:36:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:36:33,610 INFO L87 Difference]: Start difference. First operand 325 states and 395 transitions. Second operand 3 states. [2020-12-22 18:36:33,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:33,731 INFO L93 Difference]: Finished difference Result 686 states and 832 transitions. [2020-12-22 18:36:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:36:33,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 18:36:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:33,735 INFO L225 Difference]: With dead ends: 686 [2020-12-22 18:36:33,735 INFO L226 Difference]: Without dead ends: 365 [2020-12-22 18:36:33,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 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 18:36:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-12-22 18:36:33,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 336. [2020-12-22 18:36:33,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-22 18:36:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2020-12-22 18:36:33,762 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 54 [2020-12-22 18:36:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:33,764 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2020-12-22 18:36:33,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:36:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2020-12-22 18:36:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 18:36:33,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:33,769 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] [2020-12-22 18:36:33,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:36:33,983 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:33,984 INFO L82 PathProgramCache]: Analyzing trace with hash 901612414, now seen corresponding path program 1 times [2020-12-22 18:36:33,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:33,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151942650] [2020-12-22 18:36:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:34,018 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:34,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33963028] [2020-12-22 18:36:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 18:36:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:34,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:36:34,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:34,292 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 18:36:34,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151942650] [2020-12-22 18:36:34,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:34,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33963028] [2020-12-22 18:36:34,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:34,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:36:34,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825621731] [2020-12-22 18:36:34,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:36:34,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:34,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:36:34,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:36:34,297 INFO L87 Difference]: Start difference. First operand 336 states and 412 transitions. Second operand 4 states. [2020-12-22 18:36:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:34,470 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2020-12-22 18:36:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:36:34,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 18:36:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:34,475 INFO L225 Difference]: With dead ends: 626 [2020-12-22 18:36:34,475 INFO L226 Difference]: Without dead ends: 342 [2020-12-22 18:36:34,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:36:34,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-22 18:36:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2020-12-22 18:36:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-22 18:36:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 411 transitions. [2020-12-22 18:36:34,497 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 411 transitions. Word has length 78 [2020-12-22 18:36:34,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:34,497 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 411 transitions. [2020-12-22 18:36:34,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:36:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 411 transitions. [2020-12-22 18:36:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 18:36:34,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:34,502 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] [2020-12-22 18:36:34,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:36:34,717 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:34,718 INFO L82 PathProgramCache]: Analyzing trace with hash -611683268, now seen corresponding path program 1 times [2020-12-22 18:36:34,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:34,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213436449] [2020-12-22 18:36:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:34,759 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:34,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061313051] [2020-12-22 18:36:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 18:36:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:34,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:36:35,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:35,123 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 18:36:35,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:36:35,128 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:36:35,129 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:36:35,129 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-22 18:36:35,149 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 18:36:35,151 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:36:35,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:36:35,155 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:36:35,155 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-22 18:36:35,169 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 18:36:35,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213436449] [2020-12-22 18:36:35,170 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:35,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061313051] [2020-12-22 18:36:35,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:35,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:36:35,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476800490] [2020-12-22 18:36:35,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:36:35,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:35,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:36:35,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:36:35,172 INFO L87 Difference]: Start difference. First operand 336 states and 411 transitions. Second operand 4 states. [2020-12-22 18:36:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:35,637 INFO L93 Difference]: Finished difference Result 447 states and 551 transitions. [2020-12-22 18:36:35,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:36:35,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 18:36:35,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:35,640 INFO L225 Difference]: With dead ends: 447 [2020-12-22 18:36:35,641 INFO L226 Difference]: Without dead ends: 431 [2020-12-22 18:36:35,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 18:36:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-12-22 18:36:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 338. [2020-12-22 18:36:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-22 18:36:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 413 transitions. [2020-12-22 18:36:35,658 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 413 transitions. Word has length 79 [2020-12-22 18:36:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:35,658 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 413 transitions. [2020-12-22 18:36:35,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:36:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 413 transitions. [2020-12-22 18:36:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 18:36:35,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:35,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:36:35,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:36:35,873 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1201768388, now seen corresponding path program 1 times [2020-12-22 18:36:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:35,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882428774] [2020-12-22 18:36:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:35,895 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:35,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872173735] [2020-12-22 18:36:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:36:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:36,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 18:36:36,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:36,250 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 18:36:36,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882428774] [2020-12-22 18:36:36,251 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:36,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872173735] [2020-12-22 18:36:36,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:36:36,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:36:36,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297812336] [2020-12-22 18:36:36,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:36:36,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:36,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:36:36,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:36:36,253 INFO L87 Difference]: Start difference. First operand 338 states and 413 transitions. Second operand 5 states. [2020-12-22 18:36:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:36,367 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2020-12-22 18:36:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:36:36,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 18:36:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:36,370 INFO L225 Difference]: With dead ends: 626 [2020-12-22 18:36:36,370 INFO L226 Difference]: Without dead ends: 340 [2020-12-22 18:36:36,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:36:36,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-12-22 18:36:36,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2020-12-22 18:36:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-12-22 18:36:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 415 transitions. [2020-12-22 18:36:36,388 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 415 transitions. Word has length 81 [2020-12-22 18:36:36,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:36,388 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 415 transitions. [2020-12-22 18:36:36,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:36:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 415 transitions. [2020-12-22 18:36:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 18:36:36,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:36,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:36:36,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:36:36,605 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:36,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1914773501, now seen corresponding path program 1 times [2020-12-22 18:36:36,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:36,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446490195] [2020-12-22 18:36:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:36,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:36,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564559448] [2020-12-22 18:36:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:36:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:36:36,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 18:36:36,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:36:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 18:36:37,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446490195] [2020-12-22 18:36:37,038 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:36:37,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564559448] [2020-12-22 18:36:37,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:36:37,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:36:37,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309803814] [2020-12-22 18:36:37,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:36:37,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:36:37,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:36:37,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:36:37,041 INFO L87 Difference]: Start difference. First operand 340 states and 415 transitions. Second operand 6 states. [2020-12-22 18:36:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:36:37,193 INFO L93 Difference]: Finished difference Result 630 states and 777 transitions. [2020-12-22 18:36:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:36:37,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 18:36:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:36:37,196 INFO L225 Difference]: With dead ends: 630 [2020-12-22 18:36:37,196 INFO L226 Difference]: Without dead ends: 342 [2020-12-22 18:36:37,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:36:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-22 18:36:37,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-12-22 18:36:37,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-12-22 18:36:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 417 transitions. [2020-12-22 18:36:37,213 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 417 transitions. Word has length 83 [2020-12-22 18:36:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:36:37,214 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 417 transitions. [2020-12-22 18:36:37,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:36:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 417 transitions. [2020-12-22 18:36:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 18:36:37,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:36:37,215 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 18:36:37,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:36:37,429 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:36:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:36:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash 931638948, now seen corresponding path program 2 times [2020-12-22 18:36:37,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:36:37,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159090436] [2020-12-22 18:36:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:36:37,450 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:36:37,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807999700] [2020-12-22 18:36:37,451 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 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 18:37:29,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:37:29,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:37:29,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 18:37:29,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:37:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:37:29,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159090436] [2020-12-22 18:37:29,785 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:37:29,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807999700] [2020-12-22 18:37:29,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:37:29,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:37:29,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103246236] [2020-12-22 18:37:29,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:37:29,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:37:29,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:37:29,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:37:29,788 INFO L87 Difference]: Start difference. First operand 342 states and 417 transitions. Second operand 7 states. [2020-12-22 18:37:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:37:30,037 INFO L93 Difference]: Finished difference Result 634 states and 781 transitions. [2020-12-22 18:37:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 18:37:30,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-12-22 18:37:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:37:30,040 INFO L225 Difference]: With dead ends: 634 [2020-12-22 18:37:30,040 INFO L226 Difference]: Without dead ends: 344 [2020-12-22 18:37:30,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-12-22 18:37:30,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-12-22 18:37:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2020-12-22 18:37:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-12-22 18:37:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 419 transitions. [2020-12-22 18:37:30,059 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 419 transitions. Word has length 85 [2020-12-22 18:37:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:37:30,059 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 419 transitions. [2020-12-22 18:37:30,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:37:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 419 transitions. [2020-12-22 18:37:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 18:37:30,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:37:30,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:30,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:37:30,275 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:37:30,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:37:30,276 INFO L82 PathProgramCache]: Analyzing trace with hash -924314845, now seen corresponding path program 3 times [2020-12-22 18:37:30,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:37:30,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476205911] [2020-12-22 18:37:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:37:30,293 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:37:30,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651365431] [2020-12-22 18:37:30,294 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 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 18:40:06,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 18:40:06,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:40:06,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 18:40:06,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:40:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 18:40:06,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476205911] [2020-12-22 18:40:06,836 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:40:06,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651365431] [2020-12-22 18:40:06,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:40:06,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:40:06,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104143402] [2020-12-22 18:40:06,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:40:06,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:40:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:40:06,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:40:06,844 INFO L87 Difference]: Start difference. First operand 344 states and 419 transitions. Second operand 6 states. [2020-12-22 18:40:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:40:06,902 INFO L93 Difference]: Finished difference Result 637 states and 783 transitions. [2020-12-22 18:40:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:40:06,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-12-22 18:40:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:40:06,905 INFO L225 Difference]: With dead ends: 637 [2020-12-22 18:40:06,905 INFO L226 Difference]: Without dead ends: 345 [2020-12-22 18:40:06,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 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 18:40:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-12-22 18:40:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2020-12-22 18:40:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-12-22 18:40:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 420 transitions. [2020-12-22 18:40:06,924 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 420 transitions. Word has length 87 [2020-12-22 18:40:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:40:06,924 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 420 transitions. [2020-12-22 18:40:06,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:40:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 420 transitions. [2020-12-22 18:40:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 18:40:06,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:40:06,925 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:07,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:40:07,140 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:40:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:40:07,142 INFO L82 PathProgramCache]: Analyzing trace with hash 470397120, now seen corresponding path program 4 times [2020-12-22 18:40:07,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:40:07,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755615887] [2020-12-22 18:40:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:40:07,175 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:40:07,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025618842] [2020-12-22 18:40:07,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 18:40:07,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 18:40:07,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:40:07,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 18:40:07,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:40:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 18:40:07,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755615887] [2020-12-22 18:40:07,660 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:40:07,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025618842] [2020-12-22 18:40:07,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:40:07,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 18:40:07,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573024672] [2020-12-22 18:40:07,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:40:07,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:40:07,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:40:07,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:40:07,662 INFO L87 Difference]: Start difference. First operand 345 states and 420 transitions. Second operand 8 states. [2020-12-22 18:40:07,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:40:07,916 INFO L93 Difference]: Finished difference Result 639 states and 785 transitions. [2020-12-22 18:40:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 18:40:07,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-12-22 18:40:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:40:07,919 INFO L225 Difference]: With dead ends: 639 [2020-12-22 18:40:07,919 INFO L226 Difference]: Without dead ends: 346 [2020-12-22 18:40:07,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-22 18:40:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-22 18:40:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2020-12-22 18:40:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-12-22 18:40:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 421 transitions. [2020-12-22 18:40:07,937 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 421 transitions. Word has length 88 [2020-12-22 18:40:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:40:07,937 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 421 transitions. [2020-12-22 18:40:07,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:40:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 421 transitions. [2020-12-22 18:40:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 18:40:07,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:40:07,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:08,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:40:08,154 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:40:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:40:08,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1423450748, now seen corresponding path program 5 times [2020-12-22 18:40:08,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:40:08,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584406151] [2020-12-22 18:40:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:40:08,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:40:08,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339788848] [2020-12-22 18:40:08,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 18:40:09,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-22 18:40:09,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:40:09,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 18:40:09,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:40:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 18:40:09,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584406151] [2020-12-22 18:40:09,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:40:09,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339788848] [2020-12-22 18:40:09,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:40:09,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 18:40:09,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564192306] [2020-12-22 18:40:09,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 18:40:09,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:40:09,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 18:40:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:40:09,327 INFO L87 Difference]: Start difference. First operand 346 states and 421 transitions. Second operand 9 states. [2020-12-22 18:40:09,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:40:09,639 INFO L93 Difference]: Finished difference Result 642 states and 789 transitions. [2020-12-22 18:40:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 18:40:09,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-12-22 18:40:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:40:09,642 INFO L225 Difference]: With dead ends: 642 [2020-12-22 18:40:09,642 INFO L226 Difference]: Without dead ends: 348 [2020-12-22 18:40:09,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2020-12-22 18:40:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-12-22 18:40:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2020-12-22 18:40:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-12-22 18:40:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 423 transitions. [2020-12-22 18:40:09,659 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 423 transitions. Word has length 89 [2020-12-22 18:40:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:40:09,660 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 423 transitions. [2020-12-22 18:40:09,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 18:40:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 423 transitions. [2020-12-22 18:40:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 18:40:09,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:40:09,661 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:09,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:40:09,875 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:40:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:40:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1039581629, now seen corresponding path program 6 times [2020-12-22 18:40:09,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:40:09,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951406704] [2020-12-22 18:40:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:40:09,892 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:40:09,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469178139] [2020-12-22 18:40:09,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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