/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/nla-digbench-scaling/cohencu-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:57:46,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:57:46,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:57:46,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:57:46,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:57:46,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:57:46,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:57:46,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:57:46,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:57:46,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:57:46,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:57:46,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:57:47,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:57:47,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:57:47,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:57:47,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:57:47,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:57:47,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:57:47,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:57:47,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:57:47,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:57:47,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:57:47,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:57:47,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:57:47,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:57:47,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:57:47,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:57:47,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:57:47,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:57:47,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:57:47,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:57:47,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:57:47,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:57:47,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:57:47,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:57:47,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:57:47,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:57:47,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:57:47,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:57:47,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:57:47,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:57:47,092 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:57:47,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:57:47,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:57:47,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:57:47,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:57:47,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:57:47,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:57:47,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:57:47,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:57:47,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:57:47,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:57:47,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:57:47,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:57:47,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:57:47,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:57:47,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:57:47,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:57:47,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:57:47,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:57:47,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:57:47,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:57:47,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:57:47,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:57:47,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:57:47,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:57:47,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:57:47,531 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:57:47,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound5.c [2020-12-22 04:57:47,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e98be81/3dab7f11e11b4e46bfec49030799b3f9/FLAG6f1892bc9 [2020-12-22 04:57:48,367 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:57:48,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound5.c [2020-12-22 04:57:48,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e98be81/3dab7f11e11b4e46bfec49030799b3f9/FLAG6f1892bc9 [2020-12-22 04:57:48,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e98be81/3dab7f11e11b4e46bfec49030799b3f9 [2020-12-22 04:57:48,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:57:48,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:57:48,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:57:48,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:57:48,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:57:48,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:48,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3879d17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48, skipping insertion in model container [2020-12-22 04:57:48,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:48,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:57:48,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:57:48,894 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/nla-digbench-scaling/cohencu-ll_unwindbound5.c[588,601] [2020-12-22 04:57:48,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:57:48,935 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:57:48,950 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/nla-digbench-scaling/cohencu-ll_unwindbound5.c[588,601] [2020-12-22 04:57:48,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:57:48,980 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:57:48,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48 WrapperNode [2020-12-22 04:57:48,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:57:48,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:57:48,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:57:48,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:57:48,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:57:49,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:57:49,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:57:49,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:57:49,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (1/1) ... [2020-12-22 04:57:49,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:57:49,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:57:49,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:57:49,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:57:49,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (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 04:57:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:57:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:57:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:57:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:57:49,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:57:49,763 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 04:57:49,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:49 BoogieIcfgContainer [2020-12-22 04:57:49,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:57:49,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:57:49,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:57:49,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:57:49,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:57:48" (1/3) ... [2020-12-22 04:57:49,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f505245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:57:49, skipping insertion in model container [2020-12-22 04:57:49,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:48" (2/3) ... [2020-12-22 04:57:49,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f505245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:57:49, skipping insertion in model container [2020-12-22 04:57:49,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:49" (3/3) ... [2020-12-22 04:57:49,775 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound5.c [2020-12-22 04:57:49,782 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:57:49,787 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 04:57:49,809 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 04:57:49,839 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:57:49,839 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:57:49,839 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:57:49,839 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:57:49,839 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:57:49,840 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:57:49,840 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:57:49,840 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:57:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-22 04:57:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:57:49,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:49,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:57:49,865 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:49,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:49,872 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 04:57:49,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:49,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566025971] [2020-12-22 04:57:49,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:50,179 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 04:57:50,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566025971] [2020-12-22 04:57:50,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:50,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:57:50,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630971660] [2020-12-22 04:57:50,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:57:50,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:50,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:57:50,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:57:50,205 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-12-22 04:57:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:50,418 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-12-22 04:57:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:57:50,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 04:57:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:50,430 INFO L225 Difference]: With dead ends: 101 [2020-12-22 04:57:50,430 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 04:57:50,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:57:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 04:57:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-22 04:57:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 04:57:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 04:57:50,473 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-12-22 04:57:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:50,473 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 04:57:50,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:57:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 04:57:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:57:50,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:50,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:50,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:57:50,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 04:57:50,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:50,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795587476] [2020-12-22 04:57:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:50,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:50,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564112024] [2020-12-22 04:57:50,495 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 04:57:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:50,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:57:50,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:50,734 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 04:57:50,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795587476] [2020-12-22 04:57:50,735 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:50,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564112024] [2020-12-22 04:57:50,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:50,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:57:50,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40406323] [2020-12-22 04:57:50,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:50,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:50,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:50,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:50,740 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-22 04:57:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:51,023 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2020-12-22 04:57:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:57:51,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 04:57:51,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:51,029 INFO L225 Difference]: With dead ends: 90 [2020-12-22 04:57:51,030 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 04:57:51,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 04:57:51,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-12-22 04:57:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:57:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-12-22 04:57:51,066 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2020-12-22 04:57:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:51,067 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-12-22 04:57:51,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-12-22 04:57:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:57:51,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:51,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:51,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:57:51,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:51,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:51,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2020-12-22 04:57:51,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:51,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733910810] [2020-12-22 04:57:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:51,368 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 04:57:51,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733910810] [2020-12-22 04:57:51,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:51,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:57:51,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964258697] [2020-12-22 04:57:51,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:57:51,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:51,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:57:51,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:57:51,372 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2020-12-22 04:57:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:51,398 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-12-22 04:57:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:57:51,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 04:57:51,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:51,401 INFO L225 Difference]: With dead ends: 84 [2020-12-22 04:57:51,401 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 04:57:51,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:57:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 04:57:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 04:57:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:57:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-22 04:57:51,415 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-12-22 04:57:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:51,416 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-22 04:57:51,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:57:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-22 04:57:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 04:57:51,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:51,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:51,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:57:51,417 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:51,418 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-22 04:57:51,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:51,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089879436] [2020-12-22 04:57:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:51,444 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:51,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525079225] [2020-12-22 04:57:51,447 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 04:57:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:51,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:57:51,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:51,652 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 04:57:51,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089879436] [2020-12-22 04:57:51,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:51,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525079225] [2020-12-22 04:57:51,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:51,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:57:51,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529680433] [2020-12-22 04:57:51,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:51,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:51,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:51,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:51,656 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2020-12-22 04:57:51,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:51,877 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2020-12-22 04:57:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:57:51,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 04:57:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:51,879 INFO L225 Difference]: With dead ends: 78 [2020-12-22 04:57:51,879 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 04:57:51,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 04:57:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-22 04:57:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:57:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-22 04:57:51,892 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2020-12-22 04:57:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:51,892 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-22 04:57:51,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-22 04:57:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:57:51,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:51,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:52,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:52,108 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:52,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:52,109 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2020-12-22 04:57:52,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:52,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706188297] [2020-12-22 04:57:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:52,130 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:52,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595981669] [2020-12-22 04:57:52,131 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 04:57:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:52,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 04:57:52,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:52,283 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 04:57:52,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706188297] [2020-12-22 04:57:52,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:52,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595981669] [2020-12-22 04:57:52,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:52,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:57:52,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687041797] [2020-12-22 04:57:52,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:52,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:52,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:52,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:52,287 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-12-22 04:57:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:52,506 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-12-22 04:57:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:57:52,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 04:57:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:52,508 INFO L225 Difference]: With dead ends: 77 [2020-12-22 04:57:52,508 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 04:57:52,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 04:57:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-12-22 04:57:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 04:57:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-22 04:57:52,517 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-12-22 04:57:52,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:52,517 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-22 04:57:52,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-22 04:57:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 04:57:52,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:52,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:52,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:52,732 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:52,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2020-12-22 04:57:52,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:52,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302656925] [2020-12-22 04:57:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:52,747 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:52,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567229211] [2020-12-22 04:57:52,748 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 04:57:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:52,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 04:57:52,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:52,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302656925] [2020-12-22 04:57:52,911 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:52,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567229211] [2020-12-22 04:57:52,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:52,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:52,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760074876] [2020-12-22 04:57:52,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:52,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:52,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:52,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:52,913 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 7 states. [2020-12-22 04:57:53,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:53,103 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-12-22 04:57:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:57:53,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 04:57:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:53,105 INFO L225 Difference]: With dead ends: 101 [2020-12-22 04:57:53,105 INFO L226 Difference]: Without dead ends: 95 [2020-12-22 04:57:53,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:57:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-22 04:57:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2020-12-22 04:57:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 04:57:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-12-22 04:57:53,117 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 20 [2020-12-22 04:57:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:53,118 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-12-22 04:57:53,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-12-22 04:57:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 04:57:53,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:53,119 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] [2020-12-22 04:57:53,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:53,335 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:53,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:53,336 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2020-12-22 04:57:53,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:53,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20620694] [2020-12-22 04:57:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:53,351 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:53,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900381235] [2020-12-22 04:57:53,351 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 04:57:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:53,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 04:57:53,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:53,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20620694] [2020-12-22 04:57:53,502 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:53,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900381235] [2020-12-22 04:57:53,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:53,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 04:57:53,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768513183] [2020-12-22 04:57:53,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:57:53,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:53,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:57:53,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:57:53,505 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 5 states. [2020-12-22 04:57:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:53,537 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-12-22 04:57:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:57:53,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-22 04:57:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:53,539 INFO L225 Difference]: With dead ends: 98 [2020-12-22 04:57:53,539 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 04:57:53,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 04:57:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-22 04:57:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 04:57:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-12-22 04:57:53,569 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 21 [2020-12-22 04:57:53,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:53,570 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-12-22 04:57:53,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:57:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-12-22 04:57:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 04:57:53,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:53,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:53,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 04:57:53,773 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:53,774 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2020-12-22 04:57:53,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:53,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325294354] [2020-12-22 04:57:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:53,791 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:53,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254135268] [2020-12-22 04:57:53,792 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 04:57:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:53,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:57:53,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:53,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325294354] [2020-12-22 04:57:53,961 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:53,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254135268] [2020-12-22 04:57:53,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:53,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:53,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018890044] [2020-12-22 04:57:53,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:53,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:53,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:53,964 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 7 states. [2020-12-22 04:57:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:54,155 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-12-22 04:57:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:57:54,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-22 04:57:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:54,161 INFO L225 Difference]: With dead ends: 92 [2020-12-22 04:57:54,161 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 04:57:54,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:57:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 04:57:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-12-22 04:57:54,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 04:57:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-12-22 04:57:54,187 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 22 [2020-12-22 04:57:54,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:54,188 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-12-22 04:57:54,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-12-22 04:57:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 04:57:54,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:54,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:54,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:54,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:54,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2020-12-22 04:57:54,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:54,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14430738] [2020-12-22 04:57:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:54,422 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:54,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102121204] [2020-12-22 04:57:54,423 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 04:57:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:54,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 04:57:54,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:54,744 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:54,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14430738] [2020-12-22 04:57:54,770 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:54,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102121204] [2020-12-22 04:57:54,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:54,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:57:54,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725082606] [2020-12-22 04:57:54,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:57:54,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:54,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:57:54,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:57:54,773 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 8 states. [2020-12-22 04:57:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:55,113 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-12-22 04:57:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:57:55,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 04:57:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:55,115 INFO L225 Difference]: With dead ends: 82 [2020-12-22 04:57:55,115 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 04:57:55,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 04:57:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-12-22 04:57:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 04:57:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-12-22 04:57:55,124 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 31 [2020-12-22 04:57:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:55,125 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-12-22 04:57:55,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:57:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-12-22 04:57:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 04:57:55,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:55,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:57:55,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:55,340 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2020-12-22 04:57:55,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:55,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74738891] [2020-12-22 04:57:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:55,353 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:55,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084856448] [2020-12-22 04:57:55,354 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 04:57:55,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:57:55,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:57:55,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 04:57:55,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:55,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74738891] [2020-12-22 04:57:55,609 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:55,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084856448] [2020-12-22 04:57:55,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:55,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:55,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801895343] [2020-12-22 04:57:55,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:55,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:55,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:55,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:55,612 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 7 states. [2020-12-22 04:57:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:55,820 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2020-12-22 04:57:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:57:55,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 04:57:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:55,823 INFO L225 Difference]: With dead ends: 123 [2020-12-22 04:57:55,823 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 04:57:55,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:57:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 04:57:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2020-12-22 04:57:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 04:57:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-12-22 04:57:55,837 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 32 [2020-12-22 04:57:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:55,838 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-12-22 04:57:55,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:55,838 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-12-22 04:57:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:57:55,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:55,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:56,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 04:57:56,060 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:56,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2020-12-22 04:57:56,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:56,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520565591] [2020-12-22 04:57:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:56,087 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:56,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188405409] [2020-12-22 04:57:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:56,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 04:57:56,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:56,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:56,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520565591] [2020-12-22 04:57:56,301 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:56,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188405409] [2020-12-22 04:57:56,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:56,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:57:56,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849667324] [2020-12-22 04:57:56,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:57:56,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:56,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:57:56,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:57:56,304 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 8 states. [2020-12-22 04:57:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:56,538 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-12-22 04:57:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:57:56,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 04:57:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:56,540 INFO L225 Difference]: With dead ends: 86 [2020-12-22 04:57:56,540 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 04:57:56,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 04:57:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-12-22 04:57:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 04:57:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-12-22 04:57:56,548 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 33 [2020-12-22 04:57:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:56,548 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-12-22 04:57:56,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:57:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-12-22 04:57:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:57:56,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:56,549 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:56,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:56,763 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:56,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2020-12-22 04:57:56,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:56,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594030827] [2020-12-22 04:57:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:56,774 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:56,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421164648] [2020-12-22 04:57:56,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:56,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:57:56,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:57:56,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 04:57:56,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:56,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594030827] [2020-12-22 04:57:56,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:56,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421164648] [2020-12-22 04:57:56,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:56,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 04:57:56,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823816144] [2020-12-22 04:57:56,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:56,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:56,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:56,922 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 6 states. [2020-12-22 04:57:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:56,965 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-12-22 04:57:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:57:56,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-22 04:57:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:56,966 INFO L225 Difference]: With dead ends: 105 [2020-12-22 04:57:56,966 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 04:57:56,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:57:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 04:57:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-12-22 04:57:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 04:57:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-12-22 04:57:56,975 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 33 [2020-12-22 04:57:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:56,975 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-12-22 04:57:56,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-12-22 04:57:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 04:57:56,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:56,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:57:57,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:57,191 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2020-12-22 04:57:57,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:57,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399480522] [2020-12-22 04:57:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:57,202 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:57,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353742773] [2020-12-22 04:57:57,206 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 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 04:57:57,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:57:57,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:57:57,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 04:57:57,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:57,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399480522] [2020-12-22 04:57:57,458 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:57,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353742773] [2020-12-22 04:57:57,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:57,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:57:57,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934961341] [2020-12-22 04:57:57,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:57:57,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:57,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:57:57,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:57:57,460 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 9 states. [2020-12-22 04:57:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:57,731 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2020-12-22 04:57:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:57:57,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-22 04:57:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:57,733 INFO L225 Difference]: With dead ends: 118 [2020-12-22 04:57:57,733 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 04:57:57,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 04:57:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2020-12-22 04:57:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 04:57:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-12-22 04:57:57,742 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2020-12-22 04:57:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:57,742 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-12-22 04:57:57,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:57:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-12-22 04:57:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 04:57:57,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:57,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:57:57,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 04:57:57,957 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 1 times [2020-12-22 04:57:57,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:57,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963318127] [2020-12-22 04:57:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:57,966 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:57,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880838932] [2020-12-22 04:57:57,967 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 04:57:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:58,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 04:57:58,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:58,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963318127] [2020-12-22 04:57:58,150 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:58,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880838932] [2020-12-22 04:57:58,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:58,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:58,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116193176] [2020-12-22 04:57:58,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:58,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:58,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:58,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:58,152 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 7 states. [2020-12-22 04:57:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:58,355 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2020-12-22 04:57:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:57:58,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-22 04:57:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:58,357 INFO L225 Difference]: With dead ends: 109 [2020-12-22 04:57:58,357 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 04:57:58,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:57:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 04:57:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-12-22 04:57:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 04:57:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-12-22 04:57:58,367 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 36 [2020-12-22 04:57:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:58,367 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-12-22 04:57:58,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-12-22 04:57:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 04:57:58,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:58,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:58,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 04:57:58,582 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:58,583 INFO L82 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2020-12-22 04:57:58,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:58,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413371241] [2020-12-22 04:57:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:58,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:58,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411660344] [2020-12-22 04:57:58,593 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 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 04:57:58,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:57:58,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:57:58,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 04:57:58,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:58,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:58,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:58,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:57:58,965 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:57:58,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:58,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413371241] [2020-12-22 04:57:58,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:58,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411660344] [2020-12-22 04:57:58,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:58,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:57:58,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136680540] [2020-12-22 04:57:58,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:57:58,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:58,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:57:58,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:58,994 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 11 states. [2020-12-22 04:57:59,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:59,484 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2020-12-22 04:57:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:57:59,485 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-12-22 04:57:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:59,486 INFO L225 Difference]: With dead ends: 90 [2020-12-22 04:57:59,486 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 04:57:59,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:57:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 04:57:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-12-22 04:57:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 04:57:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-12-22 04:57:59,495 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 43 [2020-12-22 04:57:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:59,495 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-12-22 04:57:59,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:57:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-12-22 04:57:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 04:57:59,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:59,496 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-22 04:57:59,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 04:57:59,712 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:59,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:59,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1212527061, now seen corresponding path program 3 times [2020-12-22 04:57:59,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:59,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015099541] [2020-12-22 04:57:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:59,723 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:59,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161162936] [2020-12-22 04:57:59,723 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 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 04:57:59,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:57:59,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:57:59,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 04:57:59,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:03,953 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)))) (and (= (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (* 8 c_ULTIMATE.start_main_~y~0) .cse0 (* 18 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0))) (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~n~0)) (* 12 c_ULTIMATE.start_main_~n~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* 9 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 7)) (let ((.cse1 (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) .cse0 1)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from false [2020-12-22 04:58:12,355 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-22 04:58:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 04:58:12,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015099541] [2020-12-22 04:58:12,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:12,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161162936] [2020-12-22 04:58:12,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:12,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 04:58:12,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247863294] [2020-12-22 04:58:12,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:58:12,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:12,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:58:12,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=4, NotChecked=14, Total=90 [2020-12-22 04:58:12,411 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 10 states. [2020-12-22 04:59:13,053 WARN L197 SmtUtils]: Spent 1.01 m on a formula simplification that was a NOOP. DAG size: 41 [2020-12-22 04:59:23,392 WARN L197 SmtUtils]: Spent 10.30 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 04:59:30,452 WARN L197 SmtUtils]: Spent 4.42 s on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-22 04:59:35,695 WARN L197 SmtUtils]: Spent 4.61 s on a formula simplification that was a NOOP. DAG size: 45 [2020-12-22 04:59:45,519 WARN L197 SmtUtils]: Spent 9.76 s on a formula simplification. DAG size of input: 49 DAG size of output: 39