/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_BER_test10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:01:33,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:01:33,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:01:33,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:01:33,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:01:33,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:01:33,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:01:33,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:01:33,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:01:33,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:01:33,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:01:33,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:01:33,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:01:33,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:01:33,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:01:33,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:01:33,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:01:33,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:01:33,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:01:33,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:01:33,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:01:33,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:01:33,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:01:33,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:01:33,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 18:01:33,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:01:33,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:01:33,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:01:33,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:01:33,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:01:33,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:01:33,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:01:33,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:01:33,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:01:33,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:01:33,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:01:33,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 18:01:33,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:01:33,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:01:33,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:01:33,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:01:33,703 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:01:33,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:01:33,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:01:33,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:01:33,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 18:01:33,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:01:33,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 18:01:33,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 18:01:33,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:01:33,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 18:01:33,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:01:33,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:01:33,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:01:33,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:01:33,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:01:33,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:01:33,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 18:01:33,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:01:33,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:01:33,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 18:01:33,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:01:33,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:01:34,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:01:34,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:01:34,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:01:34,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:01:34,156 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:01:34,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2020-12-22 18:01:34,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09dedc41f/3af8e4262b94478588734ebdf4ab669b/FLAG32ec0a73c [2020-12-22 18:01:35,143 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:01:35,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2020-12-22 18:01:35,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09dedc41f/3af8e4262b94478588734ebdf4ab669b/FLAG32ec0a73c [2020-12-22 18:01:35,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09dedc41f/3af8e4262b94478588734ebdf4ab669b [2020-12-22 18:01:35,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:01:35,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:01:35,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:01:35,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:01:35,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:01:35,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:35" (1/1) ... [2020-12-22 18:01:35,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35948dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:35, skipping insertion in model container [2020-12-22 18:01:35,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:35" (1/1) ... [2020-12-22 18:01:35,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:01:35,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:01:35,925 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_BER_test10-2.i[33022,33035] [2020-12-22 18:01:36,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:01:36,250 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:01:36,285 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_BER_test10-2.i[33022,33035] [2020-12-22 18:01:36,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:01:36,531 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:01:36,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36 WrapperNode [2020-12-22 18:01:36,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:01:36,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:01:36,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:01:36,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:01:36,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:36,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:36,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:01:36,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:01:36,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:01:36,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:01:36,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:36,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:36,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:36,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:36,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:37,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:37,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (1/1) ... [2020-12-22 18:01:37,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:01:37,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:01:37,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:01:37,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:01:37,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (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 18:01:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:01:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:01:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:01:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:01:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:01:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 18:01:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:01:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:01:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:01:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:01:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:01:39,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:01:39,802 INFO L299 CfgBuilder]: Removed 216 assume(true) statements. [2020-12-22 18:01:39,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:39 BoogieIcfgContainer [2020-12-22 18:01:39,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:01:39,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:01:39,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:01:39,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:01:39,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:01:35" (1/3) ... [2020-12-22 18:01:39,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1663935b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:39, skipping insertion in model container [2020-12-22 18:01:39,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:36" (2/3) ... [2020-12-22 18:01:39,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1663935b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:39, skipping insertion in model container [2020-12-22 18:01:39,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:39" (3/3) ... [2020-12-22 18:01:39,817 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2020-12-22 18:01:39,828 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:01:39,835 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-22 18:01:39,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-22 18:01:39,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:01:39,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 18:01:39,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:01:39,911 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:01:39,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:01:39,911 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:01:39,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:01:39,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:01:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states. [2020-12-22 18:01:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 18:01:39,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:39,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:39,967 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:39,975 INFO L82 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2020-12-22 18:01:39,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166157394] [2020-12-22 18:01:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:40,195 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 18:01:40,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166157394] [2020-12-22 18:01:40,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:40,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:01:40,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167945503] [2020-12-22 18:01:40,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 18:01:40,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:40,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 18:01:40,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 18:01:40,231 INFO L87 Difference]: Start difference. First operand 499 states. Second operand 2 states. [2020-12-22 18:01:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:40,304 INFO L93 Difference]: Finished difference Result 996 states and 1678 transitions. [2020-12-22 18:01:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 18:01:40,305 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 18:01:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:40,326 INFO L225 Difference]: With dead ends: 996 [2020-12-22 18:01:40,327 INFO L226 Difference]: Without dead ends: 465 [2020-12-22 18:01:40,333 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 18:01:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-12-22 18:01:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-12-22 18:01:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-22 18:01:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2020-12-22 18:01:40,435 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2020-12-22 18:01:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:40,436 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2020-12-22 18:01:40,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 18:01:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2020-12-22 18:01:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:01:40,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:40,442 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 18:01:40,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:01:40,444 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:40,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:40,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2020-12-22 18:01:40,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:40,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946129701] [2020-12-22 18:01:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:40,678 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 18:01:40,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946129701] [2020-12-22 18:01:40,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:40,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:01:40,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717840826] [2020-12-22 18:01:40,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:01:40,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:40,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:01:40,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:40,685 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand 4 states. [2020-12-22 18:01:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:42,064 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2020-12-22 18:01:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:01:42,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 18:01:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:42,069 INFO L225 Difference]: With dead ends: 831 [2020-12-22 18:01:42,069 INFO L226 Difference]: Without dead ends: 540 [2020-12-22 18:01:42,071 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 18:01:42,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-12-22 18:01:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2020-12-22 18:01:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-12-22 18:01:42,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2020-12-22 18:01:42,101 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2020-12-22 18:01:42,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:42,101 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2020-12-22 18:01:42,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:01:42,102 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2020-12-22 18:01:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:01:42,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:42,107 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:42,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:01:42,107 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:42,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2020-12-22 18:01:42,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:42,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909927528] [2020-12-22 18:01:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:42,141 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:42,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385661571] [2020-12-22 18:01:42,142 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 18:01:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:42,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:42,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:42,584 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 18:01:42,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909927528] [2020-12-22 18:01:42,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:42,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385661571] [2020-12-22 18:01:42,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:42,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:01:42,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852415407] [2020-12-22 18:01:42,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:01:42,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:42,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:01:42,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:42,588 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand 3 states. [2020-12-22 18:01:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:42,697 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2020-12-22 18:01:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:01:42,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:01:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:42,701 INFO L225 Difference]: With dead ends: 951 [2020-12-22 18:01:42,701 INFO L226 Difference]: Without dead ends: 488 [2020-12-22 18:01:42,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:42,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-12-22 18:01:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2020-12-22 18:01:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-12-22 18:01:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2020-12-22 18:01:42,720 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2020-12-22 18:01:42,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:42,721 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2020-12-22 18:01:42,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:01:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2020-12-22 18:01:42,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:01:42,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:42,726 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:42,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 18:01:42,940 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2020-12-22 18:01:42,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:42,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782916569] [2020-12-22 18:01:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:42,970 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:42,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262308531] [2020-12-22 18:01:42,971 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 18:01:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:43,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:43,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:43,469 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 18:01:43,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782916569] [2020-12-22 18:01:43,469 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:43,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262308531] [2020-12-22 18:01:43,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:43,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:01:43,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059256711] [2020-12-22 18:01:43,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:01:43,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:43,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:01:43,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:43,473 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand 3 states. [2020-12-22 18:01:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:43,570 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2020-12-22 18:01:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:01:43,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:01:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:43,574 INFO L225 Difference]: With dead ends: 787 [2020-12-22 18:01:43,575 INFO L226 Difference]: Without dead ends: 508 [2020-12-22 18:01:43,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-22 18:01:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2020-12-22 18:01:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-22 18:01:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2020-12-22 18:01:43,590 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2020-12-22 18:01:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:43,591 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2020-12-22 18:01:43,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:01:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2020-12-22 18:01:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:01:43,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:43,598 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:43,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:43,800 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:43,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:43,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2020-12-22 18:01:43,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:43,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523040565] [2020-12-22 18:01:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:43,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:43,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159351391] [2020-12-22 18:01:43,828 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 18:01:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:44,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:44,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:44,274 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 18:01:44,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523040565] [2020-12-22 18:01:44,275 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:44,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159351391] [2020-12-22 18:01:44,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:44,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:01:44,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400710985] [2020-12-22 18:01:44,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:01:44,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:44,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:01:44,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:44,278 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand 4 states. [2020-12-22 18:01:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:44,430 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2020-12-22 18:01:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:01:44,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:01:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:44,434 INFO L225 Difference]: With dead ends: 1086 [2020-12-22 18:01:44,434 INFO L226 Difference]: Without dead ends: 583 [2020-12-22 18:01:44,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-22 18:01:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2020-12-22 18:01:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-22 18:01:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2020-12-22 18:01:44,451 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2020-12-22 18:01:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:44,452 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2020-12-22 18:01:44,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:01:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2020-12-22 18:01:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:01:44,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:44,454 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:44,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:44,669 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:44,670 INFO L82 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2020-12-22 18:01:44,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:44,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183234283] [2020-12-22 18:01:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:44,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:44,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402562648] [2020-12-22 18:01:44,720 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 18:01:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:45,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:45,135 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 18:01:45,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183234283] [2020-12-22 18:01:45,136 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:45,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402562648] [2020-12-22 18:01:45,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:45,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:01:45,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729636859] [2020-12-22 18:01:45,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:01:45,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:45,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:01:45,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:45,139 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand 4 states. [2020-12-22 18:01:45,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:45,235 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2020-12-22 18:01:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:01:45,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 18:01:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:45,239 INFO L225 Difference]: With dead ends: 761 [2020-12-22 18:01:45,239 INFO L226 Difference]: Without dead ends: 480 [2020-12-22 18:01:45,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-12-22 18:01:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2020-12-22 18:01:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-12-22 18:01:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2020-12-22 18:01:45,255 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2020-12-22 18:01:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:45,255 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2020-12-22 18:01:45,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:01:45,256 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2020-12-22 18:01:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 18:01:45,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:45,257 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:45,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:45,472 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:45,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2020-12-22 18:01:45,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:45,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962383693] [2020-12-22 18:01:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:45,493 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:45,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488432466] [2020-12-22 18:01:45,494 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 18:01:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:45,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:01:45,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:46,001 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 18:01:46,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962383693] [2020-12-22 18:01:46,002 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:46,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488432466] [2020-12-22 18:01:46,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:46,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:01:46,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245400360] [2020-12-22 18:01:46,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:01:46,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:46,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:01:46,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:46,005 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand 3 states. [2020-12-22 18:01:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:46,097 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2020-12-22 18:01:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:01:46,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 18:01:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:46,102 INFO L225 Difference]: With dead ends: 1231 [2020-12-22 18:01:46,103 INFO L226 Difference]: Without dead ends: 756 [2020-12-22 18:01:46,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-12-22 18:01:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2020-12-22 18:01:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-12-22 18:01:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2020-12-22 18:01:46,131 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2020-12-22 18:01:46,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:46,131 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2020-12-22 18:01:46,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:01:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2020-12-22 18:01:46,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 18:01:46,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:46,134 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:46,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 18:01:46,348 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:46,349 INFO L82 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2020-12-22 18:01:46,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:46,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147160260] [2020-12-22 18:01:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:46,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:46,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484945630] [2020-12-22 18:01:46,379 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 18:01:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:46,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:46,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:46,789 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 18:01:46,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147160260] [2020-12-22 18:01:46,789 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:46,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484945630] [2020-12-22 18:01:46,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:46,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:01:46,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371887890] [2020-12-22 18:01:46,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:01:46,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:46,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:01:46,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:46,792 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand 3 states. [2020-12-22 18:01:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:46,854 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2020-12-22 18:01:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:01:46,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 18:01:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:46,859 INFO L225 Difference]: With dead ends: 1400 [2020-12-22 18:01:46,860 INFO L226 Difference]: Without dead ends: 727 [2020-12-22 18:01:46,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-12-22 18:01:46,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2020-12-22 18:01:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-12-22 18:01:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2020-12-22 18:01:46,884 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2020-12-22 18:01:46,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:46,885 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2020-12-22 18:01:46,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:01:46,885 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2020-12-22 18:01:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 18:01:46,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:46,887 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:47,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:47,102 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:47,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:47,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2020-12-22 18:01:47,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:47,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063965339] [2020-12-22 18:01:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:47,122 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:47,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814808830] [2020-12-22 18:01:47,123 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 18:01:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:47,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:01:47,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 18:01:47,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063965339] [2020-12-22 18:01:47,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:47,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814808830] [2020-12-22 18:01:47,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:01:47,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 18:01:47,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750530484] [2020-12-22 18:01:47,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:01:47,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:47,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:01:47,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:47,619 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand 4 states. [2020-12-22 18:01:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:47,711 INFO L93 Difference]: Finished difference Result 1411 states and 1820 transitions. [2020-12-22 18:01:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:01:47,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 18:01:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:47,716 INFO L225 Difference]: With dead ends: 1411 [2020-12-22 18:01:47,716 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:01:47,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:01:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:01:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:01:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 942 transitions. [2020-12-22 18:01:47,738 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 942 transitions. Word has length 106 [2020-12-22 18:01:47,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:47,739 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 942 transitions. [2020-12-22 18:01:47,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:01:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 942 transitions. [2020-12-22 18:01:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 18:01:47,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:47,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:47,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:47,955 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:47,956 INFO L82 PathProgramCache]: Analyzing trace with hash -462744993, now seen corresponding path program 2 times [2020-12-22 18:01:47,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:47,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547556500] [2020-12-22 18:01:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:47,979 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:47,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239765408] [2020-12-22 18:01:47,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:48,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:01:48,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:01:48,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:01:48,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 18:01:48,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547556500] [2020-12-22 18:01:48,484 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:48,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239765408] [2020-12-22 18:01:48,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:01:48,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 18:01:48,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388089311] [2020-12-22 18:01:48,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:01:48,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:01:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:48,487 INFO L87 Difference]: Start difference. First operand 733 states and 942 transitions. Second operand 5 states. [2020-12-22 18:01:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:48,608 INFO L93 Difference]: Finished difference Result 1422 states and 1831 transitions. [2020-12-22 18:01:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:01:48,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 18:01:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:48,613 INFO L225 Difference]: With dead ends: 1422 [2020-12-22 18:01:48,613 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:01:48,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:01:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:01:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:01:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 948 transitions. [2020-12-22 18:01:48,639 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 948 transitions. Word has length 108 [2020-12-22 18:01:48,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:48,639 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 948 transitions. [2020-12-22 18:01:48,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:01:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 948 transitions. [2020-12-22 18:01:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 18:01:48,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:48,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:48,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 18:01:48,855 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash 87417216, now seen corresponding path program 3 times [2020-12-22 18:01:48,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:48,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005336830] [2020-12-22 18:01:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:48,886 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:48,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225666088] [2020-12-22 18:01:48,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:49,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:01:49,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:01:49,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:01:49,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:49,244 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 18:01:49,245 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:01:49,251 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:01:49,252 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:01:49,253 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-22 18:01:49,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:01:49,336 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 18:01:49,337 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:01:49,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:01:49,344 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:01:49,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:71, output treesize:3 [2020-12-22 18:01:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:01:49,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005336830] [2020-12-22 18:01:49,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:49,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225666088] [2020-12-22 18:01:49,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:49,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:01:49,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146654332] [2020-12-22 18:01:49,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:01:49,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:49,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:01:49,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:49,423 INFO L87 Difference]: Start difference. First operand 739 states and 948 transitions. Second operand 5 states. [2020-12-22 18:01:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:50,650 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2020-12-22 18:01:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:01:50,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 18:01:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:50,654 INFO L225 Difference]: With dead ends: 1382 [2020-12-22 18:01:50,655 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:01:50,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:01:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:01:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:01:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:01:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 947 transitions. [2020-12-22 18:01:50,679 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 947 transitions. Word has length 110 [2020-12-22 18:01:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:50,679 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 947 transitions. [2020-12-22 18:01:50,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:01:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 947 transitions. [2020-12-22 18:01:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:01:50,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:50,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:50,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:50,896 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:50,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2117457625, now seen corresponding path program 1 times [2020-12-22 18:01:50,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:50,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111232753] [2020-12-22 18:01:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:50,926 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:50,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153398878] [2020-12-22 18:01:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:51,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:51,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:01:51,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111232753] [2020-12-22 18:01:51,399 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:51,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153398878] [2020-12-22 18:01:51,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:51,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:01:51,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081146213] [2020-12-22 18:01:51,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:01:51,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:51,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:01:51,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:51,406 INFO L87 Difference]: Start difference. First operand 739 states and 947 transitions. Second operand 3 states. [2020-12-22 18:01:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:51,545 INFO L93 Difference]: Finished difference Result 1502 states and 1935 transitions. [2020-12-22 18:01:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:01:51,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 18:01:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:51,550 INFO L225 Difference]: With dead ends: 1502 [2020-12-22 18:01:51,550 INFO L226 Difference]: Without dead ends: 781 [2020-12-22 18:01:51,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-12-22 18:01:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 779. [2020-12-22 18:01:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2020-12-22 18:01:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 987 transitions. [2020-12-22 18:01:51,578 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 987 transitions. Word has length 157 [2020-12-22 18:01:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:51,578 INFO L481 AbstractCegarLoop]: Abstraction has 779 states and 987 transitions. [2020-12-22 18:01:51,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:01:51,578 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 987 transitions. [2020-12-22 18:01:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:01:51,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:51,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:51,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:51,796 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:51,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1572585051, now seen corresponding path program 1 times [2020-12-22 18:01:51,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:51,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056660707] [2020-12-22 18:01:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:51,820 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:51,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193602261] [2020-12-22 18:01:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:52,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 18:01:52,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:01:52,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056660707] [2020-12-22 18:01:52,376 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:52,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193602261] [2020-12-22 18:01:52,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:52,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:01:52,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425699549] [2020-12-22 18:01:52,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:01:52,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:52,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:01:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:52,378 INFO L87 Difference]: Start difference. First operand 779 states and 987 transitions. Second operand 4 states. [2020-12-22 18:01:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:52,497 INFO L93 Difference]: Finished difference Result 1496 states and 1900 transitions. [2020-12-22 18:01:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:01:52,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:01:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:52,502 INFO L225 Difference]: With dead ends: 1496 [2020-12-22 18:01:52,502 INFO L226 Difference]: Without dead ends: 753 [2020-12-22 18:01:52,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:52,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-12-22 18:01:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2020-12-22 18:01:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-12-22 18:01:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 945 transitions. [2020-12-22 18:01:52,525 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 945 transitions. Word has length 157 [2020-12-22 18:01:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:52,525 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 945 transitions. [2020-12-22 18:01:52,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:01:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 945 transitions. [2020-12-22 18:01:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:01:52,527 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:52,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:52,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 18:01:52,743 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:52,744 INFO L82 PathProgramCache]: Analyzing trace with hash 94293941, now seen corresponding path program 1 times [2020-12-22 18:01:52,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:52,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745009163] [2020-12-22 18:01:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:52,762 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:52,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267612239] [2020-12-22 18:01:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:53,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:01:53,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:01:53,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745009163] [2020-12-22 18:01:53,334 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:53,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267612239] [2020-12-22 18:01:53,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:53,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:01:53,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567201252] [2020-12-22 18:01:53,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:01:53,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:53,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:01:53,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:53,336 INFO L87 Difference]: Start difference. First operand 751 states and 945 transitions. Second operand 5 states. [2020-12-22 18:01:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:53,524 INFO L93 Difference]: Finished difference Result 2209 states and 2786 transitions. [2020-12-22 18:01:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:01:53,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-12-22 18:01:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:53,531 INFO L225 Difference]: With dead ends: 2209 [2020-12-22 18:01:53,531 INFO L226 Difference]: Without dead ends: 1496 [2020-12-22 18:01:53,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:53,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-12-22 18:01:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 797. [2020-12-22 18:01:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-12-22 18:01:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 995 transitions. [2020-12-22 18:01:53,562 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 995 transitions. Word has length 157 [2020-12-22 18:01:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:53,563 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 995 transitions. [2020-12-22 18:01:53,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:01:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 995 transitions. [2020-12-22 18:01:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:01:53,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:53,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:53,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:01:53,780 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:53,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1994860229, now seen corresponding path program 1 times [2020-12-22 18:01:53,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:53,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401230583] [2020-12-22 18:01:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:53,802 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:53,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244164326] [2020-12-22 18:01:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:54,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 18:01:54,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 18:01:54,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401230583] [2020-12-22 18:01:54,349 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:54,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244164326] [2020-12-22 18:01:54,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:54,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:01:54,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965499954] [2020-12-22 18:01:54,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:01:54,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:54,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:01:54,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:01:54,351 INFO L87 Difference]: Start difference. First operand 797 states and 995 transitions. Second operand 4 states. [2020-12-22 18:01:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:54,451 INFO L93 Difference]: Finished difference Result 1503 states and 1887 transitions. [2020-12-22 18:01:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:01:54,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 18:01:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:54,455 INFO L225 Difference]: With dead ends: 1503 [2020-12-22 18:01:54,455 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 18:01:54,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:01:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 18:01:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2020-12-22 18:01:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-12-22 18:01:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 917 transitions. [2020-12-22 18:01:54,484 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 917 transitions. Word has length 157 [2020-12-22 18:01:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:54,484 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 917 transitions. [2020-12-22 18:01:54,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:01:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 917 transitions. [2020-12-22 18:01:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 18:01:54,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:54,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:54,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:01:54,701 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 639166515, now seen corresponding path program 1 times [2020-12-22 18:01:54,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:54,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530033431] [2020-12-22 18:01:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:54,719 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:54,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451302417] [2020-12-22 18:01:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:55,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 18:01:55,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 18:01:55,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530033431] [2020-12-22 18:01:55,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:55,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451302417] [2020-12-22 18:01:55,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:01:55,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 18:01:55,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242727329] [2020-12-22 18:01:55,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:01:55,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:55,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:01:55,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:01:55,242 INFO L87 Difference]: Start difference. First operand 733 states and 917 transitions. Second operand 6 states. [2020-12-22 18:01:55,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:55,350 INFO L93 Difference]: Finished difference Result 1424 states and 1796 transitions. [2020-12-22 18:01:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:01:55,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-12-22 18:01:55,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:55,355 INFO L225 Difference]: With dead ends: 1424 [2020-12-22 18:01:55,355 INFO L226 Difference]: Without dead ends: 739 [2020-12-22 18:01:55,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:01:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-12-22 18:01:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2020-12-22 18:01:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-12-22 18:01:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 923 transitions. [2020-12-22 18:01:55,382 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 923 transitions. Word has length 157 [2020-12-22 18:01:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:55,382 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 923 transitions. [2020-12-22 18:01:55,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:01:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 923 transitions. [2020-12-22 18:01:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 18:01:55,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:55,385 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:55,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:55,600 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1050888114, now seen corresponding path program 2 times [2020-12-22 18:01:55,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:55,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108747929] [2020-12-22 18:01:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:55,621 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:55,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907527626] [2020-12-22 18:01:55,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:56,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:01:56,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:01:56,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:01:56,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 18:01:56,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108747929] [2020-12-22 18:01:56,240 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:56,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907527626] [2020-12-22 18:01:56,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:01:56,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 18:01:56,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639778091] [2020-12-22 18:01:56,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:01:56,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:56,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:01:56,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:01:56,245 INFO L87 Difference]: Start difference. First operand 739 states and 923 transitions. Second operand 7 states. [2020-12-22 18:01:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:56,359 INFO L93 Difference]: Finished difference Result 1435 states and 1807 transitions. [2020-12-22 18:01:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:01:56,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-12-22 18:01:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:56,363 INFO L225 Difference]: With dead ends: 1435 [2020-12-22 18:01:56,364 INFO L226 Difference]: Without dead ends: 745 [2020-12-22 18:01:56,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:01:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-22 18:01:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2020-12-22 18:01:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-12-22 18:01:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 929 transitions. [2020-12-22 18:01:56,390 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 929 transitions. Word has length 159 [2020-12-22 18:01:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:56,390 INFO L481 AbstractCegarLoop]: Abstraction has 745 states and 929 transitions. [2020-12-22 18:01:56,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:01:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 929 transitions. [2020-12-22 18:01:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 18:01:56,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:56,393 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:56,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 18:01:56,606 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash 770488787, now seen corresponding path program 3 times [2020-12-22 18:01:56,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:56,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24554153] [2020-12-22 18:01:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:56,624 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:56,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086344641] [2020-12-22 18:01:56,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:57,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:01:57,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:01:57,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:01:57,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-22 18:01:57,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24554153] [2020-12-22 18:01:57,219 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:57,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086344641] [2020-12-22 18:01:57,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:01:57,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:01:57,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894467857] [2020-12-22 18:01:57,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:01:57,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:57,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:01:57,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:57,227 INFO L87 Difference]: Start difference. First operand 745 states and 929 transitions. Second operand 3 states. [2020-12-22 18:01:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:57,320 INFO L93 Difference]: Finished difference Result 1749 states and 2217 transitions. [2020-12-22 18:01:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:01:57,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 18:01:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:57,327 INFO L225 Difference]: With dead ends: 1749 [2020-12-22 18:01:57,327 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 18:01:57,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:01:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 18:01:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 906. [2020-12-22 18:01:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-12-22 18:01:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1156 transitions. [2020-12-22 18:01:57,365 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1156 transitions. Word has length 161 [2020-12-22 18:01:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:57,365 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1156 transitions. [2020-12-22 18:01:57,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:01:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1156 transitions. [2020-12-22 18:01:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 18:01:57,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:57,368 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:57,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 18:01:57,582 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1484056676, now seen corresponding path program 1 times [2020-12-22 18:01:57,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:57,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985664854] [2020-12-22 18:01:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:57,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:57,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625705401] [2020-12-22 18:01:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:01:58,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:01:58,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-22 18:01:58,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985664854] [2020-12-22 18:01:58,272 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:58,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625705401] [2020-12-22 18:01:58,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:01:58,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 18:01:58,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599663738] [2020-12-22 18:01:58,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:01:58,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:58,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:01:58,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:01:58,279 INFO L87 Difference]: Start difference. First operand 906 states and 1156 transitions. Second operand 8 states. [2020-12-22 18:01:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:58,428 INFO L93 Difference]: Finished difference Result 1770 states and 2275 transitions. [2020-12-22 18:01:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 18:01:58,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 178 [2020-12-22 18:01:58,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:58,434 INFO L225 Difference]: With dead ends: 1770 [2020-12-22 18:01:58,434 INFO L226 Difference]: Without dead ends: 912 [2020-12-22 18:01:58,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:01:58,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-12-22 18:01:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2020-12-22 18:01:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-12-22 18:01:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1162 transitions. [2020-12-22 18:01:58,469 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1162 transitions. Word has length 178 [2020-12-22 18:01:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:58,469 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1162 transitions. [2020-12-22 18:01:58,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:01:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1162 transitions. [2020-12-22 18:01:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-22 18:01:58,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:58,472 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:58,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:58,687 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:58,688 INFO L82 PathProgramCache]: Analyzing trace with hash -453644734, now seen corresponding path program 2 times [2020-12-22 18:01:58,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:58,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265194662] [2020-12-22 18:01:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:58,737 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:58,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188830489] [2020-12-22 18:01:58,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:59,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:01:59,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:01:59,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:01:59,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:01:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-22 18:01:59,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265194662] [2020-12-22 18:01:59,410 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:01:59,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188830489] [2020-12-22 18:01:59,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:01:59,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 18:01:59,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637834286] [2020-12-22 18:01:59,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 18:01:59,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:01:59,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 18:01:59,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:01:59,413 INFO L87 Difference]: Start difference. First operand 912 states and 1162 transitions. Second operand 9 states. [2020-12-22 18:01:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:01:59,557 INFO L93 Difference]: Finished difference Result 1781 states and 2286 transitions. [2020-12-22 18:01:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 18:01:59,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-12-22 18:01:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:01:59,562 INFO L225 Difference]: With dead ends: 1781 [2020-12-22 18:01:59,562 INFO L226 Difference]: Without dead ends: 918 [2020-12-22 18:01:59,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:01:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-12-22 18:01:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2020-12-22 18:01:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-12-22 18:01:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1168 transitions. [2020-12-22 18:01:59,600 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1168 transitions. Word has length 182 [2020-12-22 18:01:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:01:59,601 INFO L481 AbstractCegarLoop]: Abstraction has 918 states and 1168 transitions. [2020-12-22 18:01:59,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 18:01:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1168 transitions. [2020-12-22 18:01:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 18:01:59,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:01:59,604 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:01:59,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:01:59,820 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:01:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:01:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1986963428, now seen corresponding path program 3 times [2020-12-22 18:01:59,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:01:59,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066096725] [2020-12-22 18:01:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:01:59,839 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:01:59,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558405562] [2020-12-22 18:01:59,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:00,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 18:02:00,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:00,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 18:02:00,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-12-22 18:02:00,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066096725] [2020-12-22 18:02:00,598 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:00,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558405562] [2020-12-22 18:02:00,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:02:00,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 18:02:00,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926539438] [2020-12-22 18:02:00,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 18:02:00,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 18:02:00,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 18:02:00,599 INFO L87 Difference]: Start difference. First operand 918 states and 1168 transitions. Second operand 4 states. [2020-12-22 18:02:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:01,156 INFO L93 Difference]: Finished difference Result 1509 states and 1921 transitions. [2020-12-22 18:02:01,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:02:01,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2020-12-22 18:02:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:01,161 INFO L225 Difference]: With dead ends: 1509 [2020-12-22 18:02:01,161 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 18:02:01,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:02:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 18:02:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 18:02:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 18:02:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 909 transitions. [2020-12-22 18:02:01,190 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 909 transitions. Word has length 186 [2020-12-22 18:02:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:01,191 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 909 transitions. [2020-12-22 18:02:01,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 18:02:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 909 transitions. [2020-12-22 18:02:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 18:02:01,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:01,193 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:02:01,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:01,407 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:02:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1622468887, now seen corresponding path program 1 times [2020-12-22 18:02:01,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:01,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938193034] [2020-12-22 18:02:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:01,430 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:01,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844450302] [2020-12-22 18:02:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:02:01,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 18:02:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-22 18:02:02,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938193034] [2020-12-22 18:02:02,137 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:02,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844450302] [2020-12-22 18:02:02,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:02,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 18:02:02,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347586394] [2020-12-22 18:02:02,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 18:02:02,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:02,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 18:02:02,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:02:02,140 INFO L87 Difference]: Start difference. First operand 732 states and 909 transitions. Second operand 10 states. [2020-12-22 18:02:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:02,285 INFO L93 Difference]: Finished difference Result 1418 states and 1775 transitions. [2020-12-22 18:02:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 18:02:02,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-12-22 18:02:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:02,290 INFO L225 Difference]: With dead ends: 1418 [2020-12-22 18:02:02,290 INFO L226 Difference]: Without dead ends: 736 [2020-12-22 18:02:02,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-22 18:02:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-12-22 18:02:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2020-12-22 18:02:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-12-22 18:02:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 913 transitions. [2020-12-22 18:02:02,320 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 913 transitions. Word has length 193 [2020-12-22 18:02:02,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:02,320 INFO L481 AbstractCegarLoop]: Abstraction has 736 states and 913 transitions. [2020-12-22 18:02:02,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 18:02:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 913 transitions. [2020-12-22 18:02:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 18:02:02,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:02,322 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:02:02,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 18:02:02,536 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:02:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:02,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1336921525, now seen corresponding path program 2 times [2020-12-22 18:02:02,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:02,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085062194] [2020-12-22 18:02:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:02,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:02,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119995090] [2020-12-22 18:02:02,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:02:03,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:02:03,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:02:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 18:02:03,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:02:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-12-22 18:02:03,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085062194] [2020-12-22 18:02:03,312 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 18:02:03,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119995090] [2020-12-22 18:02:03,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 18:02:03,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 18:02:03,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135953646] [2020-12-22 18:02:03,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 18:02:03,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:02:03,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 18:02:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:02:03,314 INFO L87 Difference]: Start difference. First operand 736 states and 913 transitions. Second operand 11 states. [2020-12-22 18:02:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:02:03,523 INFO L93 Difference]: Finished difference Result 1425 states and 1782 transitions. [2020-12-22 18:02:03,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 18:02:03,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-12-22 18:02:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:02:03,527 INFO L225 Difference]: With dead ends: 1425 [2020-12-22 18:02:03,527 INFO L226 Difference]: Without dead ends: 740 [2020-12-22 18:02:03,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:02:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-12-22 18:02:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2020-12-22 18:02:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-12-22 18:02:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 917 transitions. [2020-12-22 18:02:03,557 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 917 transitions. Word has length 197 [2020-12-22 18:02:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:02:03,557 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 917 transitions. [2020-12-22 18:02:03,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 18:02:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 917 transitions. [2020-12-22 18:02:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 18:02:03,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:02:03,559 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:02:03,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 18:02:03,774 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 18:02:03,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:02:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1628837737, now seen corresponding path program 3 times [2020-12-22 18:02:03,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:02:03,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470669137] [2020-12-22 18:02:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:02:03,794 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 18:02:03,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841759044] [2020-12-22 18:02:03,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true