/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/egcd2-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:13:30,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:13:30,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:13:30,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:13:30,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:13:30,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:13:30,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:13:30,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:13:30,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:13:30,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:13:30,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:13:30,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:13:30,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:13:30,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:13:30,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:13:30,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:13:30,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:13:30,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:13:30,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:13:30,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:13:30,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:13:30,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:13:30,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:13:30,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:13:30,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:13:30,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:13:30,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:13:30,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:13:30,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:13:30,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:13:30,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:13:30,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:13:30,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:13:30,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:13:30,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:13:30,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:13:30,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:13:30,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:13:30,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:13:30,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:13:30,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:13:30,154 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:13:30,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:13:30,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:13:30,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:13:30,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:13:30,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:13:30,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:13:30,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:13:30,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:13:30,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:13:30,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:13:30,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:13:30,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:13:30,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:13:30,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:13:30,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:13:30,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:13:30,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:13:30,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:13:30,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:13:30,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:13:30,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:13:30,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:13:30,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:13:30,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:13:30,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:13:30,606 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:13:30,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2020-12-22 05:13:30,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdd6ac25/7559d46906204cf087350d91f69cc5fe/FLAGfe0d38010 [2020-12-22 05:13:31,390 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:13:31,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2020-12-22 05:13:31,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdd6ac25/7559d46906204cf087350d91f69cc5fe/FLAGfe0d38010 [2020-12-22 05:13:31,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdd6ac25/7559d46906204cf087350d91f69cc5fe [2020-12-22 05:13:31,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:13:31,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:13:31,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:13:31,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:13:31,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:13:31,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:13:31" (1/1) ... [2020-12-22 05:13:31,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5f6299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:31, skipping insertion in model container [2020-12-22 05:13:31,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:13:31" (1/1) ... [2020-12-22 05:13:31,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:13:31,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:13:31,955 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/egcd2-ll_unwindbound5.c[490,503] [2020-12-22 05:13:31,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:13:32,001 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:13:32,019 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/egcd2-ll_unwindbound5.c[490,503] [2020-12-22 05:13:32,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:13:32,083 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:13:32,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32 WrapperNode [2020-12-22 05:13:32,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:13:32,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:13:32,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:13:32,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:13:32,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:13:32,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:13:32,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:13:32,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:13:32,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (1/1) ... [2020-12-22 05:13:32,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:13:32,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:13:32,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:13:32,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:13:32,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (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 05:13:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:13:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:13:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:13:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:13:32,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:13:32,699 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 05:13:32,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:13:32 BoogieIcfgContainer [2020-12-22 05:13:32,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:13:32,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:13:32,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:13:32,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:13:32,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:13:31" (1/3) ... [2020-12-22 05:13:32,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb43a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:13:32, skipping insertion in model container [2020-12-22 05:13:32,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:13:32" (2/3) ... [2020-12-22 05:13:32,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb43a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:13:32, skipping insertion in model container [2020-12-22 05:13:32,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:13:32" (3/3) ... [2020-12-22 05:13:32,724 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound5.c [2020-12-22 05:13:32,739 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:13:32,749 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 05:13:32,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 05:13:32,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:13:32,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:13:32,818 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:13:32,819 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:13:32,821 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:13:32,821 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:13:32,821 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:13:32,821 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:13:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-22 05:13:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:13:32,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:32,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:32,860 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:32,868 INFO L82 PathProgramCache]: Analyzing trace with hash -141782897, now seen corresponding path program 1 times [2020-12-22 05:13:32,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:32,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729939730] [2020-12-22 05:13:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:33,076 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 05:13:33,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729939730] [2020-12-22 05:13:33,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:33,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:13:33,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186796028] [2020-12-22 05:13:33,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:13:33,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:33,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:13:33,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:13:33,123 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-22 05:13:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:33,147 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-12-22 05:13:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:13:33,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 05:13:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:33,159 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:13:33,159 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:13:33,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:13:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:13:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:13:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:13:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-12-22 05:13:33,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2020-12-22 05:13:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:33,203 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-12-22 05:13:33,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:13:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-12-22 05:13:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:13:33,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:33,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:33,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:13:33,209 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1057770534, now seen corresponding path program 1 times [2020-12-22 05:13:33,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:33,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012845275] [2020-12-22 05:13:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:33,233 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:33,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370556961] [2020-12-22 05:13:33,234 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 05:13:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:33,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:13:33,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:33,439 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 05:13:33,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012845275] [2020-12-22 05:13:33,440 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:33,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370556961] [2020-12-22 05:13:33,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:33,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:13:33,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124599712] [2020-12-22 05:13:33,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:13:33,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:33,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:13:33,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:13:33,444 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2020-12-22 05:13:33,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:33,472 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-12-22 05:13:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:13:33,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 05:13:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:33,474 INFO L225 Difference]: With dead ends: 49 [2020-12-22 05:13:33,475 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 05:13:33,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 05:13:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 05:13:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 05:13:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:13:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-12-22 05:13:33,483 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2020-12-22 05:13:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:33,484 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-12-22 05:13:33,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:13:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-12-22 05:13:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:13:33,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:33,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:33,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:13:33,700 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:33,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1568670238, now seen corresponding path program 1 times [2020-12-22 05:13:33,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:33,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189308827] [2020-12-22 05:13:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:33,723 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:33,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483030197] [2020-12-22 05:13:33,724 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 05:13:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:33,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:13:33,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:33,914 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 05:13:33,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189308827] [2020-12-22 05:13:33,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:33,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483030197] [2020-12-22 05:13:33,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:33,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:13:33,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643109327] [2020-12-22 05:13:33,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:13:33,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:33,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:13:33,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:13:33,918 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-12-22 05:13:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:34,143 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-12-22 05:13:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:13:34,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 05:13:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:34,146 INFO L225 Difference]: With dead ends: 69 [2020-12-22 05:13:34,146 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 05:13:34,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 05:13:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-12-22 05:13:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 05:13:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-12-22 05:13:34,164 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15 [2020-12-22 05:13:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:34,165 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-12-22 05:13:34,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:13:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-12-22 05:13:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:13:34,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:34,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:34,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:34,381 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:34,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:34,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times [2020-12-22 05:13:34,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:34,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703430154] [2020-12-22 05:13:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:34,406 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:34,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633653573] [2020-12-22 05:13:34,407 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 05:13:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:34,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:13:34,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:34,649 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 05:13:34,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703430154] [2020-12-22 05:13:34,649 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:34,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633653573] [2020-12-22 05:13:34,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:34,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:13:34,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717623507] [2020-12-22 05:13:34,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:13:34,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:34,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:13:34,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:13:34,653 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 8 states. [2020-12-22 05:13:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:35,074 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2020-12-22 05:13:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:13:35,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-12-22 05:13:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:35,076 INFO L225 Difference]: With dead ends: 80 [2020-12-22 05:13:35,077 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 05:13:35,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:13:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 05:13:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 45. [2020-12-22 05:13:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 05:13:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-22 05:13:35,087 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2020-12-22 05:13:35,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:35,087 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-22 05:13:35,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:13:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-22 05:13:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:13:35,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:35,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:35,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:35,304 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1311460386, now seen corresponding path program 1 times [2020-12-22 05:13:35,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:35,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226907679] [2020-12-22 05:13:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:35,331 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:35,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401287280] [2020-12-22 05:13:35,333 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 05:13:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:35,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:13:35,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:35,652 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 05:13:35,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226907679] [2020-12-22 05:13:35,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:35,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401287280] [2020-12-22 05:13:35,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:35,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:13:35,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421567764] [2020-12-22 05:13:35,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:13:35,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:35,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:13:35,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:13:35,658 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-12-22 05:13:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:35,910 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-12-22 05:13:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:13:35,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-22 05:13:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:35,912 INFO L225 Difference]: With dead ends: 64 [2020-12-22 05:13:35,913 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 05:13:35,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:35,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 05:13:35,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-12-22 05:13:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:13:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-12-22 05:13:35,922 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 18 [2020-12-22 05:13:35,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:35,923 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-12-22 05:13:35,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:13:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-12-22 05:13:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:13:35,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:35,924 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:36,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:36,138 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1862118746, now seen corresponding path program 1 times [2020-12-22 05:13:36,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:36,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063749950] [2020-12-22 05:13:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:36,153 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:36,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163642044] [2020-12-22 05:13:36,154 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 05:13:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:36,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:13:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:36,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063749950] [2020-12-22 05:13:36,317 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:36,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163642044] [2020-12-22 05:13:36,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:36,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:13:36,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876829361] [2020-12-22 05:13:36,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:13:36,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:36,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:13:36,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:13:36,329 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 5 states. [2020-12-22 05:13:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:36,367 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2020-12-22 05:13:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:13:36,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-22 05:13:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:36,371 INFO L225 Difference]: With dead ends: 85 [2020-12-22 05:13:36,371 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 05:13:36,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:13:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 05:13:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-22 05:13:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:13:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-12-22 05:13:36,402 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 20 [2020-12-22 05:13:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:36,402 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-12-22 05:13:36,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:13:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-12-22 05:13:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:13:36,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:36,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:36,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:13:36,617 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1887855967, now seen corresponding path program 1 times [2020-12-22 05:13:36,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:36,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120138197] [2020-12-22 05:13:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:36,634 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:36,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781819661] [2020-12-22 05:13:36,634 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 05:13:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:36,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:13:36,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:36,827 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 05:13:36,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120138197] [2020-12-22 05:13:36,827 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:36,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781819661] [2020-12-22 05:13:36,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:36,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:13:36,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300436633] [2020-12-22 05:13:36,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:13:36,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:36,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:13:36,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:13:36,831 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 8 states. [2020-12-22 05:13:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:37,013 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-12-22 05:13:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:13:37,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-22 05:13:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:37,014 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:13:37,014 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:13:37,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:13:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-12-22 05:13:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:13:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-22 05:13:37,023 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-22 05:13:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:37,023 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-22 05:13:37,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:13:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-22 05:13:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:13:37,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:37,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:37,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:37,240 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:37,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1753227772, now seen corresponding path program 1 times [2020-12-22 05:13:37,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:37,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330177266] [2020-12-22 05:13:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:37,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:37,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264185408] [2020-12-22 05:13:37,260 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 05:13:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:37,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:13:37,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:37,552 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 05:13:37,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330177266] [2020-12-22 05:13:37,552 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:37,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264185408] [2020-12-22 05:13:37,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:37,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:13:37,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549503076] [2020-12-22 05:13:37,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:37,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:37,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:37,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:37,559 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 9 states. [2020-12-22 05:13:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:39,831 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-12-22 05:13:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:13:39,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 05:13:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:39,834 INFO L225 Difference]: With dead ends: 67 [2020-12-22 05:13:39,834 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:13:39,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:13:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:13:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-12-22 05:13:39,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:13:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-12-22 05:13:39,846 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2020-12-22 05:13:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:39,846 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-12-22 05:13:39,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-12-22 05:13:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:13:39,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:39,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:40,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:40,048 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:40,050 INFO L82 PathProgramCache]: Analyzing trace with hash 29719088, now seen corresponding path program 1 times [2020-12-22 05:13:40,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:40,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747818385] [2020-12-22 05:13:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:40,070 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:40,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023030411] [2020-12-22 05:13:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:40,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:13:40,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:40,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747818385] [2020-12-22 05:13:40,240 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:40,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023030411] [2020-12-22 05:13:40,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:40,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:13:40,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244556417] [2020-12-22 05:13:40,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:13:40,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:40,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:13:40,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:13:40,242 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 6 states. [2020-12-22 05:13:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:40,430 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2020-12-22 05:13:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:13:40,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-12-22 05:13:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:40,432 INFO L225 Difference]: With dead ends: 108 [2020-12-22 05:13:40,432 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 05:13:40,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:13:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 05:13:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2020-12-22 05:13:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 05:13:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-12-22 05:13:40,447 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 26 [2020-12-22 05:13:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:40,447 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-12-22 05:13:40,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:13:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-12-22 05:13:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:13:40,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:40,448 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:40,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:13:40,663 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:40,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1666886870, now seen corresponding path program 1 times [2020-12-22 05:13:40,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:40,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776193976] [2020-12-22 05:13:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:40,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:40,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796251165] [2020-12-22 05:13:40,681 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 05:13:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:40,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:13:40,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:40,801 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 05:13:40,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776193976] [2020-12-22 05:13:40,802 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:40,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796251165] [2020-12-22 05:13:40,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:40,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:13:40,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5992985] [2020-12-22 05:13:40,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:13:40,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:40,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:13:40,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:13:40,804 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 6 states. [2020-12-22 05:13:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:40,842 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-12-22 05:13:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:13:40,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-22 05:13:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:40,844 INFO L225 Difference]: With dead ends: 89 [2020-12-22 05:13:40,844 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 05:13:40,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 05:13:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-22 05:13:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-22 05:13:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-12-22 05:13:40,857 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 28 [2020-12-22 05:13:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:40,857 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-12-22 05:13:40,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:13:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-12-22 05:13:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:13:40,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:40,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:41,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:41,075 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:41,076 INFO L82 PathProgramCache]: Analyzing trace with hash -134066994, now seen corresponding path program 1 times [2020-12-22 05:13:41,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:41,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172011245] [2020-12-22 05:13:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:41,087 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:41,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713844676] [2020-12-22 05:13:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:13:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:41,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:13:41,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:41,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172011245] [2020-12-22 05:13:41,226 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:41,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713844676] [2020-12-22 05:13:41,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:41,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:13:41,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573937702] [2020-12-22 05:13:41,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:13:41,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:41,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:13:41,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:41,228 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 7 states. [2020-12-22 05:13:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:41,486 INFO L93 Difference]: Finished difference Result 232 states and 266 transitions. [2020-12-22 05:13:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:13:41,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 05:13:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:41,488 INFO L225 Difference]: With dead ends: 232 [2020-12-22 05:13:41,488 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 05:13:41,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:13:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 05:13:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2020-12-22 05:13:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 05:13:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 176 transitions. [2020-12-22 05:13:41,508 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 176 transitions. Word has length 29 [2020-12-22 05:13:41,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:41,508 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 176 transitions. [2020-12-22 05:13:41,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:13:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 176 transitions. [2020-12-22 05:13:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 05:13:41,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:41,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:41,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:41,722 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:41,724 INFO L82 PathProgramCache]: Analyzing trace with hash 966792015, now seen corresponding path program 1 times [2020-12-22 05:13:41,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:41,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624677861] [2020-12-22 05:13:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:41,748 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:41,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002479794] [2020-12-22 05:13:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:13:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:41,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:13:41,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:41,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624677861] [2020-12-22 05:13:41,880 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:41,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002479794] [2020-12-22 05:13:41,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:41,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:13:41,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22230023] [2020-12-22 05:13:41,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:13:41,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:41,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:13:41,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:13:41,883 INFO L87 Difference]: Start difference. First operand 136 states and 176 transitions. Second operand 6 states. [2020-12-22 05:13:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:41,926 INFO L93 Difference]: Finished difference Result 179 states and 228 transitions. [2020-12-22 05:13:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:13:41,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-12-22 05:13:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:41,928 INFO L225 Difference]: With dead ends: 179 [2020-12-22 05:13:41,928 INFO L226 Difference]: Without dead ends: 136 [2020-12-22 05:13:41,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-22 05:13:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-12-22 05:13:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 05:13:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2020-12-22 05:13:41,944 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 30 [2020-12-22 05:13:41,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:41,945 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2020-12-22 05:13:41,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:13:41,945 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2020-12-22 05:13:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:13:41,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:41,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:42,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:13:42,162 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:42,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:42,163 INFO L82 PathProgramCache]: Analyzing trace with hash 302394158, now seen corresponding path program 1 times [2020-12-22 05:13:42,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:42,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703312926] [2020-12-22 05:13:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:42,174 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:42,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40583542] [2020-12-22 05:13:42,174 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 05:13:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:42,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:13:42,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:42,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703312926] [2020-12-22 05:13:42,411 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:42,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40583542] [2020-12-22 05:13:42,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:42,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:13:42,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359035923] [2020-12-22 05:13:42,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:13:42,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:13:42,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:13:42,415 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand 8 states. [2020-12-22 05:13:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:42,598 INFO L93 Difference]: Finished difference Result 208 states and 267 transitions. [2020-12-22 05:13:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:13:42,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-22 05:13:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:42,601 INFO L225 Difference]: With dead ends: 208 [2020-12-22 05:13:42,601 INFO L226 Difference]: Without dead ends: 202 [2020-12-22 05:13:42,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:13:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-22 05:13:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-12-22 05:13:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-22 05:13:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2020-12-22 05:13:42,625 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 32 [2020-12-22 05:13:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:42,626 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2020-12-22 05:13:42,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:13:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2020-12-22 05:13:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:13:42,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:42,627 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:42,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:13:42,843 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2001825622, now seen corresponding path program 1 times [2020-12-22 05:13:42,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:42,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718252922] [2020-12-22 05:13:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:42,855 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:42,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706961481] [2020-12-22 05:13:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:42,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:13:42,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:43,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718252922] [2020-12-22 05:13:43,018 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:43,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706961481] [2020-12-22 05:13:43,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:43,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:13:43,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477106507] [2020-12-22 05:13:43,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:13:43,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:43,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:13:43,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:43,024 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand 7 states. [2020-12-22 05:13:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:43,089 INFO L93 Difference]: Finished difference Result 327 states and 437 transitions. [2020-12-22 05:13:43,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:13:43,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-12-22 05:13:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:43,092 INFO L225 Difference]: With dead ends: 327 [2020-12-22 05:13:43,092 INFO L226 Difference]: Without dead ends: 200 [2020-12-22 05:13:43,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:43,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-22 05:13:43,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2020-12-22 05:13:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-22 05:13:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2020-12-22 05:13:43,123 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 34 [2020-12-22 05:13:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:43,125 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2020-12-22 05:13:43,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:13:43,125 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2020-12-22 05:13:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:13:43,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:43,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:43,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:13:43,345 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1456833039, now seen corresponding path program 1 times [2020-12-22 05:13:43,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:43,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626506523] [2020-12-22 05:13:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:43,356 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:43,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822442933] [2020-12-22 05:13:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:43,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:13:43,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:43,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626506523] [2020-12-22 05:13:43,604 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:43,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822442933] [2020-12-22 05:13:43,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:43,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:13:43,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049871829] [2020-12-22 05:13:43,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:13:43,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:43,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:13:43,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:13:43,606 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand 10 states. [2020-12-22 05:13:43,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:43,929 INFO L93 Difference]: Finished difference Result 208 states and 265 transitions. [2020-12-22 05:13:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:13:43,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-12-22 05:13:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:43,931 INFO L225 Difference]: With dead ends: 208 [2020-12-22 05:13:43,931 INFO L226 Difference]: Without dead ends: 206 [2020-12-22 05:13:43,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:13:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-22 05:13:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2020-12-22 05:13:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-22 05:13:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2020-12-22 05:13:43,952 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 34 [2020-12-22 05:13:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:43,952 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2020-12-22 05:13:43,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:13:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2020-12-22 05:13:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:13:43,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:43,953 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, 1, 1, 1] [2020-12-22 05:13:44,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:44,168 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:44,169 INFO L82 PathProgramCache]: Analyzing trace with hash 142945620, now seen corresponding path program 1 times [2020-12-22 05:13:44,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:44,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3163755] [2020-12-22 05:13:44,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:44,178 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:44,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784334247] [2020-12-22 05:13:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:44,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 05:13:44,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:44,629 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 05:13:44,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3163755] [2020-12-22 05:13:44,629 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:44,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784334247] [2020-12-22 05:13:44,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:44,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:13:44,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809372708] [2020-12-22 05:13:44,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:13:44,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:44,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:13:44,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:13:44,631 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand 13 states. [2020-12-22 05:13:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:45,127 INFO L93 Difference]: Finished difference Result 225 states and 288 transitions. [2020-12-22 05:13:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:13:45,128 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-12-22 05:13:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:45,129 INFO L225 Difference]: With dead ends: 225 [2020-12-22 05:13:45,129 INFO L226 Difference]: Without dead ends: 223 [2020-12-22 05:13:45,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:13:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-22 05:13:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 198. [2020-12-22 05:13:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-22 05:13:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 255 transitions. [2020-12-22 05:13:45,153 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 255 transitions. Word has length 36 [2020-12-22 05:13:45,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:45,153 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 255 transitions. [2020-12-22 05:13:45,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:13:45,153 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 255 transitions. [2020-12-22 05:13:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:13:45,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:45,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:45,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:13:45,369 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:45,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1084150885, now seen corresponding path program 2 times [2020-12-22 05:13:45,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:45,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271883747] [2020-12-22 05:13:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:45,380 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:45,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871404697] [2020-12-22 05:13:45,380 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:45,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:45,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:45,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:13:45,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:45,649 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 05:13:45,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271883747] [2020-12-22 05:13:45,650 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:45,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871404697] [2020-12-22 05:13:45,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:45,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:13:45,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514909447] [2020-12-22 05:13:45,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:13:45,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:45,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:13:45,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:45,652 INFO L87 Difference]: Start difference. First operand 198 states and 255 transitions. Second operand 11 states. [2020-12-22 05:13:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:45,971 INFO L93 Difference]: Finished difference Result 212 states and 269 transitions. [2020-12-22 05:13:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:13:45,971 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-12-22 05:13:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:45,973 INFO L225 Difference]: With dead ends: 212 [2020-12-22 05:13:45,973 INFO L226 Difference]: Without dead ends: 210 [2020-12-22 05:13:45,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:13:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-12-22 05:13:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 199. [2020-12-22 05:13:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-22 05:13:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 256 transitions. [2020-12-22 05:13:45,993 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 256 transitions. Word has length 36 [2020-12-22 05:13:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:45,994 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 256 transitions. [2020-12-22 05:13:45,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:13:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 256 transitions. [2020-12-22 05:13:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:13:45,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:45,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:46,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:13:46,209 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:46,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:46,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1970211809, now seen corresponding path program 1 times [2020-12-22 05:13:46,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:46,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669824071] [2020-12-22 05:13:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:46,221 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:46,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462224068] [2020-12-22 05:13:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:46,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:13:46,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:46,357 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 05:13:46,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669824071] [2020-12-22 05:13:46,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:46,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462224068] [2020-12-22 05:13:46,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:46,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:13:46,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108575667] [2020-12-22 05:13:46,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:13:46,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:46,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:13:46,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:46,360 INFO L87 Difference]: Start difference. First operand 199 states and 256 transitions. Second operand 7 states. [2020-12-22 05:13:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:46,414 INFO L93 Difference]: Finished difference Result 206 states and 263 transitions. [2020-12-22 05:13:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:13:46,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-22 05:13:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:46,416 INFO L225 Difference]: With dead ends: 206 [2020-12-22 05:13:46,417 INFO L226 Difference]: Without dead ends: 202 [2020-12-22 05:13:46,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-22 05:13:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-22 05:13:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-22 05:13:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 259 transitions. [2020-12-22 05:13:46,437 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 259 transitions. Word has length 38 [2020-12-22 05:13:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:46,438 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 259 transitions. [2020-12-22 05:13:46,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:13:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 259 transitions. [2020-12-22 05:13:46,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:13:46,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:46,439 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, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:46,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:13:46,654 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash -947205511, now seen corresponding path program 1 times [2020-12-22 05:13:46,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:46,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256024212] [2020-12-22 05:13:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:46,664 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:46,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834026652] [2020-12-22 05:13:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:46,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-22 05:13:46,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:47,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256024212] [2020-12-22 05:13:47,005 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:47,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834026652] [2020-12-22 05:13:47,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:47,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:13:47,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137380771] [2020-12-22 05:13:47,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:13:47,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:47,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:13:47,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:47,007 INFO L87 Difference]: Start difference. First operand 202 states and 259 transitions. Second operand 11 states. [2020-12-22 05:13:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:47,654 INFO L93 Difference]: Finished difference Result 239 states and 302 transitions. [2020-12-22 05:13:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:13:47,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-12-22 05:13:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:47,657 INFO L225 Difference]: With dead ends: 239 [2020-12-22 05:13:47,657 INFO L226 Difference]: Without dead ends: 233 [2020-12-22 05:13:47,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:13:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-12-22 05:13:47,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2020-12-22 05:13:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-22 05:13:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 291 transitions. [2020-12-22 05:13:47,700 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 291 transitions. Word has length 39 [2020-12-22 05:13:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:47,700 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 291 transitions. [2020-12-22 05:13:47,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:13:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 291 transitions. [2020-12-22 05:13:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 05:13:47,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:47,701 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:47,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:47,915 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash 170255994, now seen corresponding path program 2 times [2020-12-22 05:13:47,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:47,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321783271] [2020-12-22 05:13:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:47,925 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:47,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318276408] [2020-12-22 05:13:47,926 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:47,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:47,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:48,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:13:48,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:48,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321783271] [2020-12-22 05:13:48,095 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:48,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318276408] [2020-12-22 05:13:48,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:48,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:13:48,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946501042] [2020-12-22 05:13:48,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:13:48,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:13:48,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:13:48,097 INFO L87 Difference]: Start difference. First operand 226 states and 291 transitions. Second operand 8 states. [2020-12-22 05:13:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:48,176 INFO L93 Difference]: Finished difference Result 250 states and 317 transitions. [2020-12-22 05:13:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:13:48,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-22 05:13:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:48,178 INFO L225 Difference]: With dead ends: 250 [2020-12-22 05:13:48,178 INFO L226 Difference]: Without dead ends: 240 [2020-12-22 05:13:48,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:48,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-12-22 05:13:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2020-12-22 05:13:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-22 05:13:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 305 transitions. [2020-12-22 05:13:48,201 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 305 transitions. Word has length 42 [2020-12-22 05:13:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:48,202 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 305 transitions. [2020-12-22 05:13:48,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:13:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 305 transitions. [2020-12-22 05:13:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:13:48,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:48,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:48,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:48,415 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:48,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1229525663, now seen corresponding path program 1 times [2020-12-22 05:13:48,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:48,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142599665] [2020-12-22 05:13:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:48,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:48,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823296595] [2020-12-22 05:13:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:48,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:13:48,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:48,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142599665] [2020-12-22 05:13:48,574 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:48,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823296595] [2020-12-22 05:13:48,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:48,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:13:48,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957327677] [2020-12-22 05:13:48,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:13:48,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:48,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:13:48,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:13:48,576 INFO L87 Difference]: Start difference. First operand 239 states and 305 transitions. Second operand 8 states. [2020-12-22 05:13:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:48,650 INFO L93 Difference]: Finished difference Result 368 states and 482 transitions. [2020-12-22 05:13:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:13:48,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-12-22 05:13:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:48,652 INFO L225 Difference]: With dead ends: 368 [2020-12-22 05:13:48,652 INFO L226 Difference]: Without dead ends: 241 [2020-12-22 05:13:48,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-22 05:13:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-12-22 05:13:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-22 05:13:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 305 transitions. [2020-12-22 05:13:48,675 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 305 transitions. Word has length 44 [2020-12-22 05:13:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:48,676 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 305 transitions. [2020-12-22 05:13:48,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:13:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 305 transitions. [2020-12-22 05:13:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:13:48,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:48,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:48,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:13:48,890 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:48,891 INFO L82 PathProgramCache]: Analyzing trace with hash -613640578, now seen corresponding path program 2 times [2020-12-22 05:13:48,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:48,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094595395] [2020-12-22 05:13:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:48,899 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:48,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267218424] [2020-12-22 05:13:48,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:48,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:48,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:48,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:13:48,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:49,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094595395] [2020-12-22 05:13:49,077 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:49,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267218424] [2020-12-22 05:13:49,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:49,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:13:49,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518628775] [2020-12-22 05:13:49,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:49,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:49,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:49,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:49,079 INFO L87 Difference]: Start difference. First operand 241 states and 305 transitions. Second operand 9 states. [2020-12-22 05:13:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:49,157 INFO L93 Difference]: Finished difference Result 304 states and 383 transitions. [2020-12-22 05:13:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:13:49,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-12-22 05:13:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:49,159 INFO L225 Difference]: With dead ends: 304 [2020-12-22 05:13:49,159 INFO L226 Difference]: Without dead ends: 146 [2020-12-22 05:13:49,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:13:49,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-22 05:13:49,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2020-12-22 05:13:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-22 05:13:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-12-22 05:13:49,176 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 46 [2020-12-22 05:13:49,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:49,176 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-12-22 05:13:49,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-12-22 05:13:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:13:49,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:49,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:49,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:13:49,392 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2041640631, now seen corresponding path program 1 times [2020-12-22 05:13:49,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:49,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144572793] [2020-12-22 05:13:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:49,407 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:49,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669002695] [2020-12-22 05:13:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:49,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-22 05:13:49,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:50,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144572793] [2020-12-22 05:13:50,052 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:50,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669002695] [2020-12-22 05:13:50,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:50,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:13:50,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748663443] [2020-12-22 05:13:50,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:13:50,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:50,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:13:50,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:13:50,054 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 13 states. [2020-12-22 05:13:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:56,935 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2020-12-22 05:13:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:13:56,935 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-12-22 05:13:56,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:56,936 INFO L225 Difference]: With dead ends: 144 [2020-12-22 05:13:56,936 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 05:13:56,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:13:56,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 05:13:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2020-12-22 05:13:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-22 05:13:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2020-12-22 05:13:56,953 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 46 [2020-12-22 05:13:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:56,954 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2020-12-22 05:13:56,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:13:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2020-12-22 05:13:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:13:56,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:56,955 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:57,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:57,155 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:57,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1100435366, now seen corresponding path program 3 times [2020-12-22 05:13:57,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:57,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059035027] [2020-12-22 05:13:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:57,163 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:57,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649939369] [2020-12-22 05:13:57,164 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:57,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:13:57,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:57,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:13:57,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 05:13:57,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059035027] [2020-12-22 05:13:57,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:57,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649939369] [2020-12-22 05:13:57,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:57,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:13:57,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131172952] [2020-12-22 05:13:57,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:13:57,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:57,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:13:57,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:13:57,316 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand 5 states. [2020-12-22 05:13:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:57,416 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2020-12-22 05:13:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:13:57,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 05:13:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:57,417 INFO L225 Difference]: With dead ends: 138 [2020-12-22 05:13:57,417 INFO L226 Difference]: Without dead ends: 136 [2020-12-22 05:13:57,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:13:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-22 05:13:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-12-22 05:13:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 05:13:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2020-12-22 05:13:57,438 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 46 [2020-12-22 05:13:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:57,439 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2020-12-22 05:13:57,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:13:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2020-12-22 05:13:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 05:13:57,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:57,440 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:57,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 05:13:57,655 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:57,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1842911238, now seen corresponding path program 2 times [2020-12-22 05:13:57,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:57,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32566781] [2020-12-22 05:13:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:57,687 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:57,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586414914] [2020-12-22 05:13:57,687 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:57,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:57,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:57,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:13:57,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:13:57,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32566781] [2020-12-22 05:13:57,823 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:57,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586414914] [2020-12-22 05:13:57,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:57,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:13:57,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461281776] [2020-12-22 05:13:57,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:13:57,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:57,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:13:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:13:57,825 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand 5 states. [2020-12-22 05:13:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:57,930 INFO L93 Difference]: Finished difference Result 180 states and 198 transitions. [2020-12-22 05:13:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:13:57,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-12-22 05:13:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:57,932 INFO L225 Difference]: With dead ends: 180 [2020-12-22 05:13:57,933 INFO L226 Difference]: Without dead ends: 157 [2020-12-22 05:13:57,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-22 05:13:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 127. [2020-12-22 05:13:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-22 05:13:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2020-12-22 05:13:57,949 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 48 [2020-12-22 05:13:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:57,949 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2020-12-22 05:13:57,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:13:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2020-12-22 05:13:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:13:57,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:57,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:58,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:58,164 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash -316772764, now seen corresponding path program 2 times [2020-12-22 05:13:58,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:58,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003887596] [2020-12-22 05:13:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:58,175 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:58,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68570170] [2020-12-22 05:13:58,176 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:58,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:58,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:58,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-22 05:13:58,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:58,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003887596] [2020-12-22 05:13:58,599 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:58,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68570170] [2020-12-22 05:13:58,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:58,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:13:58,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722647453] [2020-12-22 05:13:58,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:13:58,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:58,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:13:58,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:13:58,601 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand 13 states. [2020-12-22 05:13:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:59,386 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2020-12-22 05:13:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:13:59,387 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-12-22 05:13:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:59,388 INFO L225 Difference]: With dead ends: 135 [2020-12-22 05:13:59,388 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 05:13:59,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:13:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 05:13:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-12-22 05:13:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 05:13:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2020-12-22 05:13:59,404 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 49 [2020-12-22 05:13:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:59,405 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2020-12-22 05:13:59,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:13:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2020-12-22 05:13:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:13:59,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:59,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:59,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 05:13:59,620 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash -231890065, now seen corresponding path program 2 times [2020-12-22 05:13:59,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:59,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191534370] [2020-12-22 05:13:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:59,630 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:59,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437335085] [2020-12-22 05:13:59,630 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:59,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:59,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-22 05:13:59,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:13:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 05:13:59,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:13:59,930 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 05:13:59,930 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:14:00,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:14:00,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:14:00 BoogieIcfgContainer [2020-12-22 05:14:00,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:14:00,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:14:00,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:14:00,215 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:14:00,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:13:32" (3/4) ... [2020-12-22 05:14:00,218 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 05:14:00,315 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c-witness.graphml [2020-12-22 05:14:00,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:14:00,318 INFO L168 Benchmark]: Toolchain (without parser) took 28546.71 ms. Allocated memory was 165.7 MB in the beginning and 247.5 MB in the end (delta: 81.8 MB). Free memory was 140.7 MB in the beginning and 119.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 104.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:14:00,318 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 139.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:14:00,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.55 ms. Allocated memory is still 165.7 MB. Free memory was 140.6 MB in the beginning and 130.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:14:00,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 165.7 MB. Free memory was 130.2 MB in the beginning and 128.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:14:00,320 INFO L168 Benchmark]: Boogie Preprocessor took 29.05 ms. Allocated memory is still 165.7 MB. Free memory was 128.5 MB in the beginning and 127.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:14:00,321 INFO L168 Benchmark]: RCFGBuilder took 538.58 ms. Allocated memory is still 165.7 MB. Free memory was 127.2 MB in the beginning and 109.0 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:14:00,321 INFO L168 Benchmark]: TraceAbstraction took 27505.18 ms. Allocated memory was 165.7 MB in the beginning and 247.5 MB in the end (delta: 81.8 MB). Free memory was 108.6 MB in the beginning and 123.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:14:00,322 INFO L168 Benchmark]: Witness Printer took 100.78 ms. Allocated memory is still 247.5 MB. Free memory was 123.8 MB in the beginning and 119.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:14:00,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 139.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.55 ms. Allocated memory is still 165.7 MB. Free memory was 140.6 MB in the beginning and 130.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 165.7 MB. Free memory was 130.2 MB in the beginning and 128.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.05 ms. Allocated memory is still 165.7 MB. Free memory was 128.5 MB in the beginning and 127.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 538.58 ms. Allocated memory is still 165.7 MB. Free memory was 127.2 MB in the beginning and 109.0 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27505.18 ms. Allocated memory was 165.7 MB in the beginning and 247.5 MB in the end (delta: 81.8 MB). Free memory was 108.6 MB in the beginning and 123.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * Witness Printer took 100.78 ms. Allocated memory is still 247.5 MB. Free memory was 123.8 MB in the beginning and 119.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L40] EXPR counter++ VAL [counter=1] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=1] [L46] EXPR counter++ VAL [counter=2] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L51] COND TRUE !(c >= b) VAL [counter=2] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=2] [L40] EXPR counter++ VAL [counter=3] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=3] [L46] EXPR counter++ VAL [counter=4] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [counter=4] [L46] EXPR counter++ VAL [counter=5] [L46] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L51] COND TRUE !(c >= b) VAL [counter=5] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=5] [L40] EXPR counter++ VAL [counter=6] [L40] COND FALSE !(counter++<5) [L11] COND TRUE !(cond) VAL [counter=6] [L13] reach_error() VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.3s, OverallIterations: 27, TraceHistogramMax: 4, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 995 SDtfs, 1958 SDslu, 3009 SDs, 0 SdLazy, 2398 SolverSat, 285 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 877 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 300 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 873 NumberOfCodeBlocks, 853 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 266941 SizeOfPredicates, 203 NumberOfNonLiveVariables, 3858 ConjunctsInSsa, 551 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 112/300 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...