/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/hard-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:26:38,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:26:38,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:26:38,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:26:38,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:26:38,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:26:38,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:26:38,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:26:38,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:26:38,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:26:38,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:26:38,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:26:38,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:26:38,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:26:38,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:26:38,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:26:38,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:26:38,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:26:38,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:26:38,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:26:38,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:26:38,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:26:38,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:26:38,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:26:38,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:26:38,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:26:38,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:26:38,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:26:38,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:26:38,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:26:38,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:26:38,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:26:38,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:26:38,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:26:38,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:26:38,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:26:38,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:26:38,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:26:38,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:26:38,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:26:38,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:26:38,240 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:26:38,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:26:38,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:26:38,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:26:38,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:26:38,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:26:38,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:26:38,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:26:38,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:26:38,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:26:38,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:26:38,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:26:38,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:26:38,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:26:38,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:26:38,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:26:38,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:26:38,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:26:38,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:26:38,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:26:38,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:26:38,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:26:38,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:26:38,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:26:38,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:26:38,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:26:38,712 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:26:38,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound10.c [2020-12-22 05:26:38,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a13e404/d2d6508e46344af3879483c9be0943d9/FLAGcf8b74b24 [2020-12-22 05:26:39,472 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:26:39,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound10.c [2020-12-22 05:26:39,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a13e404/d2d6508e46344af3879483c9be0943d9/FLAGcf8b74b24 [2020-12-22 05:26:39,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a13e404/d2d6508e46344af3879483c9be0943d9 [2020-12-22 05:26:39,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:26:39,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:26:39,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:26:39,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:26:39,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:26:39,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:26:39" (1/1) ... [2020-12-22 05:26:39,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d623d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:39, skipping insertion in model container [2020-12-22 05:26:39,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:26:39" (1/1) ... [2020-12-22 05:26:39,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:26:39,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:26:40,055 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/hard-ll_unwindbound10.c[538,551] [2020-12-22 05:26:40,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:26:40,082 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:26:40,096 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/hard-ll_unwindbound10.c[538,551] [2020-12-22 05:26:40,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:26:40,121 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:26:40,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40 WrapperNode [2020-12-22 05:26:40,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:26:40,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:26:40,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:26:40,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:26:40,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:26:40,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:26:40,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:26:40,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:26:40,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... [2020-12-22 05:26:40,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:26:40,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:26:40,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:26:40,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:26:40,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:26:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:26:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:26:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:26:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:26:40,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:26:40,685 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 05:26:40,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:26:40 BoogieIcfgContainer [2020-12-22 05:26:40,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:26:40,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:26:40,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:26:40,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:26:40,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:26:39" (1/3) ... [2020-12-22 05:26:40,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca224c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:26:40, skipping insertion in model container [2020-12-22 05:26:40,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:40" (2/3) ... [2020-12-22 05:26:40,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca224c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:26:40, skipping insertion in model container [2020-12-22 05:26:40,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:26:40" (3/3) ... [2020-12-22 05:26:40,732 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound10.c [2020-12-22 05:26:40,748 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:26:40,778 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:26:40,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:26:40,845 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:26:40,845 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:26:40,846 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:26:40,846 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:26:40,846 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:26:40,846 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:26:40,846 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:26:40,846 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:26:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 05:26:40,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:26:40,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:40,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:40,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:40,878 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-22 05:26:40,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:40,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882853043] [2020-12-22 05:26:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:41,057 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 05:26:41,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882853043] [2020-12-22 05:26:41,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:41,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:26:41,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933006882] [2020-12-22 05:26:41,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:26:41,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:41,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:26:41,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:26:41,088 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 05:26:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:41,121 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-22 05:26:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:26:41,123 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:26:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:41,142 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:26:41,142 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:26:41,146 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 05:26:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:26:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:26:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:26:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:26:41,199 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-22 05:26:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:41,200 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:26:41,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:26:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:26:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:26:41,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:41,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:41,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:26:41,205 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:41,208 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:26:41,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:41,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130415548] [2020-12-22 05:26:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:41,313 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 05:26:41,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130415548] [2020-12-22 05:26:41,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:41,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:26:41,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950737116] [2020-12-22 05:26:41,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:26:41,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:26:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:26:41,317 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:26:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:41,456 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-22 05:26:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:26:41,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:26:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:41,459 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:26:41,459 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:26:41,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:26:41,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:26:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-22 05:26:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:26:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:26:41,468 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:26:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:41,468 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:26:41,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:26:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:26:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:26:41,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:41,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:41,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:26:41,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:41,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-22 05:26:41,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:41,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329177888] [2020-12-22 05:26:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:41,531 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 05:26:41,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329177888] [2020-12-22 05:26:41,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:41,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:26:41,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180556410] [2020-12-22 05:26:41,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:26:41,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:41,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:26:41,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:26:41,545 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:26:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:41,593 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-22 05:26:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:26:41,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:26:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:41,598 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:26:41,598 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:26:41,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:26:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:26:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:26:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:26:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:26:41,617 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-22 05:26:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:41,617 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:26:41,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:26:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:26:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:26:41,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:41,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:41,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:26:41,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:41,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-22 05:26:41,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:41,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072543370] [2020-12-22 05:26:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:41,727 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 05:26:41,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072543370] [2020-12-22 05:26:41,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:41,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:26:41,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525776432] [2020-12-22 05:26:41,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:26:41,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:41,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:26:41,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:26:41,732 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:26:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:41,857 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-22 05:26:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:26:41,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:26:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:41,860 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:26:41,861 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:26:41,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:26:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:26:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:26:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:26:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:26:41,874 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-22 05:26:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:41,875 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:26:41,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:26:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:26:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:26:41,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:41,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:41,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:26:41,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:41,882 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-22 05:26:41,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:41,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190399477] [2020-12-22 05:26:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:41,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:41,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886596184] [2020-12-22 05:26:41,918 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 05:26:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:41,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:26:41,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:42,062 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 05:26:42,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190399477] [2020-12-22 05:26:42,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:42,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886596184] [2020-12-22 05:26:42,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:42,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:26:42,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835763991] [2020-12-22 05:26:42,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:26:42,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:42,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:26:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:26:42,066 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-22 05:26:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:42,217 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-22 05:26:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:26:42,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 05:26:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:42,219 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:26:42,219 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:26:42,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:26:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:26:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-22 05:26:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:26:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-22 05:26:42,244 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-22 05:26:42,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:42,245 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-22 05:26:42,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:26:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-22 05:26:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:26:42,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:42,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:42,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:42,452 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-22 05:26:42,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:42,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564742950] [2020-12-22 05:26:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:42,469 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:42,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833560104] [2020-12-22 05:26:42,469 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 05:26:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:42,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:26:42,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:42,683 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 05:26:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564742950] [2020-12-22 05:26:42,684 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:42,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833560104] [2020-12-22 05:26:42,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:42,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:26:42,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416271469] [2020-12-22 05:26:42,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:26:42,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:42,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:26:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:26:42,687 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-22 05:26:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:42,977 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-22 05:26:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:26:42,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:26:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:42,979 INFO L225 Difference]: With dead ends: 53 [2020-12-22 05:26:42,979 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 05:26:42,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:26:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 05:26:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 05:26:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:26:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-22 05:26:42,987 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-22 05:26:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:42,987 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-22 05:26:42,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:26:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-22 05:26:42,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:26:42,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:42,989 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:43,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:43,195 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:43,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-22 05:26:43,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:43,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252134330] [2020-12-22 05:26:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:43,209 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:43,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084867633] [2020-12-22 05:26:43,210 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 05:26:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:43,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:26:43,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:43,294 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 05:26:43,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252134330] [2020-12-22 05:26:43,294 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:43,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084867633] [2020-12-22 05:26:43,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:43,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:26:43,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215433292] [2020-12-22 05:26:43,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:26:43,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:43,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:26:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:26:43,297 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-22 05:26:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:43,323 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-22 05:26:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:26:43,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:26:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:43,324 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:26:43,324 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 05:26:43,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:26:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 05:26:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 05:26:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 05:26:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-22 05:26:43,332 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-22 05:26:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:43,333 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-22 05:26:43,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:26:43,333 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-22 05:26:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:26:43,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:43,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:43,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:43,548 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:43,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:43,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-22 05:26:43,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:43,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970632420] [2020-12-22 05:26:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:43,562 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:43,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511064670] [2020-12-22 05:26:43,563 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 05:26:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:43,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:26:43,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:26:43,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970632420] [2020-12-22 05:26:43,818 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:43,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511064670] [2020-12-22 05:26:43,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:43,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:26:43,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146024861] [2020-12-22 05:26:43,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:26:43,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:43,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:26:43,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:26:43,821 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2020-12-22 05:26:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:44,177 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-12-22 05:26:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:26:44,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-12-22 05:26:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:44,179 INFO L225 Difference]: With dead ends: 106 [2020-12-22 05:26:44,179 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 05:26:44,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:26:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 05:26:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-12-22 05:26:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:26:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-22 05:26:44,190 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 20 [2020-12-22 05:26:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:44,191 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-22 05:26:44,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:26:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-22 05:26:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:26:44,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:44,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:44,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:44,406 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:44,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-22 05:26:44,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:44,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108348254] [2020-12-22 05:26:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:44,420 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:44,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442100027] [2020-12-22 05:26:44,420 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 05:26:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:44,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:26:44,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:44,689 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 05:26:44,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108348254] [2020-12-22 05:26:44,690 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:44,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442100027] [2020-12-22 05:26:44,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:44,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:26:44,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227781878] [2020-12-22 05:26:44,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:26:44,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:44,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:26:44,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:26:44,692 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 8 states. [2020-12-22 05:26:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:45,309 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-12-22 05:26:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:26:45,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-22 05:26:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:45,311 INFO L225 Difference]: With dead ends: 74 [2020-12-22 05:26:45,311 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 05:26:45,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:26:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 05:26:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-12-22 05:26:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 05:26:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-12-22 05:26:45,320 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2020-12-22 05:26:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:45,320 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-12-22 05:26:45,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:26:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-12-22 05:26:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:26:45,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:45,321 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:45,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:45,536 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1637703955, now seen corresponding path program 2 times [2020-12-22 05:26:45,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:45,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336404930] [2020-12-22 05:26:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:45,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:45,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036989634] [2020-12-22 05:26:45,550 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 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 05:26:45,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:26:45,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:26:45,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:26:45,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 05:26:45,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336404930] [2020-12-22 05:26:45,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:45,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036989634] [2020-12-22 05:26:45,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:45,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:26:45,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766122195] [2020-12-22 05:26:45,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:26:45,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:45,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:26:45,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:26:45,645 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2020-12-22 05:26:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:45,679 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-12-22 05:26:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:26:45,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 05:26:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:45,680 INFO L225 Difference]: With dead ends: 87 [2020-12-22 05:26:45,680 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 05:26:45,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:26:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 05:26:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-12-22 05:26:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 05:26:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-12-22 05:26:45,689 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 26 [2020-12-22 05:26:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:45,690 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-12-22 05:26:45,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:26:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-12-22 05:26:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:26:45,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:45,691 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] [2020-12-22 05:26:45,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:45,904 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:45,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-22 05:26:45,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:45,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195836914] [2020-12-22 05:26:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:45,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:45,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805818387] [2020-12-22 05:26:45,925 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 05:26:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:45,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:26:45,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:46,065 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 05:26:46,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195836914] [2020-12-22 05:26:46,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:46,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805818387] [2020-12-22 05:26:46,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:46,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:26:46,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069681937] [2020-12-22 05:26:46,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:26:46,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:46,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:26:46,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:26:46,068 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 6 states. [2020-12-22 05:26:46,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:46,089 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-12-22 05:26:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:26:46,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:26:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:46,091 INFO L225 Difference]: With dead ends: 65 [2020-12-22 05:26:46,092 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:26:46,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:26:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:26:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-12-22 05:26:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 05:26:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-12-22 05:26:46,108 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 27 [2020-12-22 05:26:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:46,108 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-12-22 05:26:46,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:26:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-12-22 05:26:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:26:46,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:46,111 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:46,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:46,326 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:46,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:46,327 INFO L82 PathProgramCache]: Analyzing trace with hash -770811653, now seen corresponding path program 1 times [2020-12-22 05:26:46,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:46,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075079781] [2020-12-22 05:26:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:46,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:46,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016602671] [2020-12-22 05:26:46,338 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 05:26:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:46,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:26:46,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:46,437 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 05:26:46,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075079781] [2020-12-22 05:26:46,438 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:46,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016602671] [2020-12-22 05:26:46,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:46,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:26:46,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431774641] [2020-12-22 05:26:46,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:26:46,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:46,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:26:46,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:26:46,440 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-12-22 05:26:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:46,477 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-12-22 05:26:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:26:46,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:26:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:46,478 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:26:46,478 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:26:46,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:26:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:26:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-22 05:26:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 05:26:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-12-22 05:26:46,488 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 27 [2020-12-22 05:26:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:46,488 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-12-22 05:26:46,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:26:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-12-22 05:26:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:26:46,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:46,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:46,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:26:46,707 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-22 05:26:46,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:46,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660770090] [2020-12-22 05:26:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:46,719 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:46,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551848443] [2020-12-22 05:26:46,719 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 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 05:26:46,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:26:46,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:26:46,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 05:26:46,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:26:47,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660770090] [2020-12-22 05:26:47,158 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:47,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551848443] [2020-12-22 05:26:47,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:47,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:26:47,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780107016] [2020-12-22 05:26:47,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:26:47,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:47,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:26:47,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:26:47,161 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2020-12-22 05:26:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:48,536 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-12-22 05:26:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:26:48,537 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-12-22 05:26:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:48,538 INFO L225 Difference]: With dead ends: 119 [2020-12-22 05:26:48,538 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 05:26:48,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:26:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 05:26:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2020-12-22 05:26:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 05:26:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-12-22 05:26:48,547 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 28 [2020-12-22 05:26:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:48,548 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-12-22 05:26:48,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:26:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-12-22 05:26:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:26:48,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:48,551 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] [2020-12-22 05:26:48,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:48,752 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:48,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:48,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-22 05:26:48,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:48,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064648201] [2020-12-22 05:26:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:48,762 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:48,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851068929] [2020-12-22 05:26:48,763 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 05:26:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:48,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:26:48,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:26:49,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064648201] [2020-12-22 05:26:49,162 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:49,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851068929] [2020-12-22 05:26:49,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:49,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:26:49,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696958218] [2020-12-22 05:26:49,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:26:49,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:49,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:26:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:26:49,164 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 10 states. [2020-12-22 05:26:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:49,753 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-12-22 05:26:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:26:49,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 05:26:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:49,755 INFO L225 Difference]: With dead ends: 101 [2020-12-22 05:26:49,755 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 05:26:49,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:26:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 05:26:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-12-22 05:26:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 05:26:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-12-22 05:26:49,765 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 31 [2020-12-22 05:26:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:49,766 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-12-22 05:26:49,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:26:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-12-22 05:26:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:26:49,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:49,767 INFO L422 BasicCegarLoop]: trace histogram [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 05:26:49,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:49,982 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:49,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1414538084, now seen corresponding path program 1 times [2020-12-22 05:26:49,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:49,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203527071] [2020-12-22 05:26:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:49,996 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:49,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339114154] [2020-12-22 05:26:49,997 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 05:26:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:50,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:26:50,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:50,134 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 05:26:50,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203527071] [2020-12-22 05:26:50,134 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:50,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339114154] [2020-12-22 05:26:50,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:50,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:26:50,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355507749] [2020-12-22 05:26:50,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:26:50,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:50,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:26:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:26:50,141 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 7 states. [2020-12-22 05:26:50,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:50,191 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-12-22 05:26:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:26:50,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 05:26:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:50,193 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:26:50,193 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:26:50,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:26:50,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:26:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-12-22 05:26:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 05:26:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-12-22 05:26:50,207 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 32 [2020-12-22 05:26:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:50,208 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-12-22 05:26:50,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:26:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-12-22 05:26:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:26:50,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:50,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:50,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:26:50,424 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1150939168, now seen corresponding path program 2 times [2020-12-22 05:26:50,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:50,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252707230] [2020-12-22 05:26:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:50,435 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:50,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14925548] [2020-12-22 05:26:50,436 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 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 05:26:50,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:26:50,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:26:50,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 05:26:50,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 05:26:50,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252707230] [2020-12-22 05:26:50,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:50,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14925548] [2020-12-22 05:26:50,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:50,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:26:50,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597913799] [2020-12-22 05:26:50,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:26:50,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:50,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:26:50,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:26:50,596 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 7 states. [2020-12-22 05:26:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:50,750 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2020-12-22 05:26:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:26:50,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 05:26:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:50,751 INFO L225 Difference]: With dead ends: 113 [2020-12-22 05:26:50,751 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:26:50,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:26:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:26:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-12-22 05:26:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 05:26:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2020-12-22 05:26:50,766 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 32 [2020-12-22 05:26:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:50,766 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2020-12-22 05:26:50,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:26:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2020-12-22 05:26:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:26:50,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:50,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:50,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:26:50,984 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:50,985 INFO L82 PathProgramCache]: Analyzing trace with hash -900022411, now seen corresponding path program 1 times [2020-12-22 05:26:50,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:50,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97120424] [2020-12-22 05:26:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:51,009 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:51,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863494766] [2020-12-22 05:26:51,009 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 05:26:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:51,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:26:51,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:51,289 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 05:26:51,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97120424] [2020-12-22 05:26:51,290 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:51,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863494766] [2020-12-22 05:26:51,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:51,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:26:51,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803525558] [2020-12-22 05:26:51,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:26:51,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:51,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:26:51,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:26:51,292 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 9 states. [2020-12-22 05:26:51,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:51,737 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2020-12-22 05:26:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:26:51,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-22 05:26:51,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:51,738 INFO L225 Difference]: With dead ends: 132 [2020-12-22 05:26:51,738 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 05:26:51,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:26:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 05:26:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-12-22 05:26:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-22 05:26:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-12-22 05:26:51,748 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 33 [2020-12-22 05:26:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:51,748 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-12-22 05:26:51,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:26:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-12-22 05:26:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:26:51,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:51,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:51,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:26:51,964 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:51,965 INFO L82 PathProgramCache]: Analyzing trace with hash 918142130, now seen corresponding path program 1 times [2020-12-22 05:26:51,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:51,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487528] [2020-12-22 05:26:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:51,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:51,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586417979] [2020-12-22 05:26:51,976 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 05:26:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:52,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:26:52,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:26:52,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487528] [2020-12-22 05:26:52,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:52,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586417979] [2020-12-22 05:26:52,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:52,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:26:52,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875768112] [2020-12-22 05:26:52,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:26:52,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:52,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:26:52,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:26:52,287 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 10 states. [2020-12-22 05:26:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:53,197 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-12-22 05:26:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:26:53,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-22 05:26:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:53,198 INFO L225 Difference]: With dead ends: 154 [2020-12-22 05:26:53,198 INFO L226 Difference]: Without dead ends: 137 [2020-12-22 05:26:53,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:26:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-22 05:26:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2020-12-22 05:26:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 05:26:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-12-22 05:26:53,210 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 36 [2020-12-22 05:26:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:53,211 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-12-22 05:26:53,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:26:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-12-22 05:26:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:26:53,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:53,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:53,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:53,425 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:53,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1625393032, now seen corresponding path program 3 times [2020-12-22 05:26:53,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:53,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577886677] [2020-12-22 05:26:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:53,436 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:53,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792315214] [2020-12-22 05:26:53,437 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 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 05:26:53,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:26:53,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:26:53,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:26:53,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 05:26:57,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577886677] [2020-12-22 05:26:57,611 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:57,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792315214] [2020-12-22 05:26:57,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:57,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:26:57,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585711315] [2020-12-22 05:26:57,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:26:57,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:57,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:26:57,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=29, Unknown=2, NotChecked=0, Total=42 [2020-12-22 05:26:57,613 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 7 states. [2020-12-22 05:28:01,086 WARN L197 SmtUtils]: Spent 16.15 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-12-22 05:28:13,342 WARN L197 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-22 05:28:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:59,326 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2020-12-22 05:28:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:28:59,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-22 05:28:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:59,328 INFO L225 Difference]: With dead ends: 154 [2020-12-22 05:28:59,328 INFO L226 Difference]: Without dead ends: 144 [2020-12-22 05:28:59,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=71, Invalid=154, Unknown=15, NotChecked=0, Total=240 [2020-12-22 05:28:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-22 05:28:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2020-12-22 05:28:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 05:28:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2020-12-22 05:28:59,341 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 36 [2020-12-22 05:28:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:59,342 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2020-12-22 05:28:59,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:28:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2020-12-22 05:28:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:28:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:59,342 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:59,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:59,558 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:28:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:28:59,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1658895220, now seen corresponding path program 1 times [2020-12-22 05:28:59,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:28:59,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075020789] [2020-12-22 05:28:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:28:59,572 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:28:59,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620550459] [2020-12-22 05:28:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:28:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:28:59,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:28:59,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:28:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:28:59,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075020789] [2020-12-22 05:28:59,698 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:59,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620550459] [2020-12-22 05:28:59,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:59,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:28:59,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036853752] [2020-12-22 05:28:59,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:28:59,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:59,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:28:59,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:28:59,700 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand 7 states. [2020-12-22 05:28:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:28:59,767 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-12-22 05:28:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:28:59,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-22 05:28:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:28:59,768 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:28:59,769 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 05:28:59,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:28:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 05:28:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-22 05:28:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 05:28:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2020-12-22 05:28:59,781 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 37 [2020-12-22 05:28:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:28:59,782 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2020-12-22 05:28:59,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:28:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2020-12-22 05:28:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:28:59,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:28:59,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:28:59,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:28:59,999 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:00,000 INFO L82 PathProgramCache]: Analyzing trace with hash 406136064, now seen corresponding path program 2 times [2020-12-22 05:29:00,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:00,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804196625] [2020-12-22 05:29:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:00,009 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:00,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561870703] [2020-12-22 05:29:00,010 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 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 05:29:00,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:00,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:00,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 05:29:00,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:00,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804196625] [2020-12-22 05:29:00,646 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:00,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561870703] [2020-12-22 05:29:00,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:00,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:29:00,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518235545] [2020-12-22 05:29:00,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:29:00,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:29:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:29:00,649 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand 13 states. [2020-12-22 05:29:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:01,644 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2020-12-22 05:29:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:29:01,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-22 05:29:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:01,646 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:29:01,646 INFO L226 Difference]: Without dead ends: 122 [2020-12-22 05:29:01,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:29:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-22 05:29:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2020-12-22 05:29:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 05:29:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-12-22 05:29:01,660 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 39 [2020-12-22 05:29:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:01,660 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-12-22 05:29:01,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:29:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-12-22 05:29:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 05:29:01,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:01,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:01,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:29:01,877 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:01,877 INFO L82 PathProgramCache]: Analyzing trace with hash -294710610, now seen corresponding path program 2 times [2020-12-22 05:29:01,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:01,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458188234] [2020-12-22 05:29:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:01,886 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:01,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290982887] [2020-12-22 05:29:01,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:01,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:01,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:01,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:29:01,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:02,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458188234] [2020-12-22 05:29:02,057 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:02,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290982887] [2020-12-22 05:29:02,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:02,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:29:02,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656759402] [2020-12-22 05:29:02,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:29:02,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:02,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:29:02,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:29:02,071 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 8 states. [2020-12-22 05:29:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:02,130 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2020-12-22 05:29:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:29:02,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-22 05:29:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:02,131 INFO L225 Difference]: With dead ends: 130 [2020-12-22 05:29:02,131 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 05:29:02,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 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 05:29:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 05:29:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-12-22 05:29:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 05:29:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2020-12-22 05:29:02,147 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 40 [2020-12-22 05:29:02,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:02,148 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2020-12-22 05:29:02,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:29:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2020-12-22 05:29:02,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:29:02,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:02,148 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:02,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:29:02,363 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2116618682, now seen corresponding path program 2 times [2020-12-22 05:29:02,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:02,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647522733] [2020-12-22 05:29:02,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:02,374 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:02,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342292543] [2020-12-22 05:29:02,374 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 05:29:02,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:02,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:02,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:29:02,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:02,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647522733] [2020-12-22 05:29:02,528 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:02,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342292543] [2020-12-22 05:29:02,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:02,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:29:02,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299929424] [2020-12-22 05:29:02,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:29:02,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:02,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:29:02,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:29:02,530 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 8 states. [2020-12-22 05:29:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:02,613 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-12-22 05:29:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:29:02,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 05:29:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:02,615 INFO L225 Difference]: With dead ends: 129 [2020-12-22 05:29:02,615 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 05:29:02,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:29:02,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 05:29:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-12-22 05:29:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 05:29:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-12-22 05:29:02,629 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 45 [2020-12-22 05:29:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:02,629 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-12-22 05:29:02,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:29:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-12-22 05:29:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:29:02,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:02,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:02,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 05:29:02,844 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1302416352, now seen corresponding path program 3 times [2020-12-22 05:29:02,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:02,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488807681] [2020-12-22 05:29:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:02,853 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:02,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913071939] [2020-12-22 05:29:02,853 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 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 05:29:02,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:29:02,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:02,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 70 conjunts are in the unsatisfiable core [2020-12-22 05:29:02,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:03,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488807681] [2020-12-22 05:29:03,737 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:03,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913071939] [2020-12-22 05:29:03,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:03,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:29:03,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402044734] [2020-12-22 05:29:03,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:29:03,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:03,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:29:03,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:29:03,739 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 15 states. [2020-12-22 05:29:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:05,039 INFO L93 Difference]: Finished difference Result 171 states and 205 transitions. [2020-12-22 05:29:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:29:05,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-12-22 05:29:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:05,041 INFO L225 Difference]: With dead ends: 171 [2020-12-22 05:29:05,041 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 05:29:05,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:29:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 05:29:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-12-22 05:29:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 05:29:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-12-22 05:29:05,055 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 46 [2020-12-22 05:29:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:05,055 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-12-22 05:29:05,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:29:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-12-22 05:29:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:29:05,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:05,056 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:05,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 05:29:05,270 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:05,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1720227954, now seen corresponding path program 3 times [2020-12-22 05:29:05,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:05,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527209258] [2020-12-22 05:29:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:05,279 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:05,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869113127] [2020-12-22 05:29:05,280 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 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 05:29:05,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:29:05,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:05,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:29:05,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:05,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527209258] [2020-12-22 05:29:05,583 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:05,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869113127] [2020-12-22 05:29:05,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:05,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:29:05,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135666591] [2020-12-22 05:29:05,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:29:05,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:05,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:29:05,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:29:05,584 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 9 states. [2020-12-22 05:29:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:05,662 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2020-12-22 05:29:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:29:05,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-12-22 05:29:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:05,664 INFO L225 Difference]: With dead ends: 152 [2020-12-22 05:29:05,664 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 05:29:05,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:29:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 05:29:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-12-22 05:29:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 05:29:05,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-12-22 05:29:05,678 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 47 [2020-12-22 05:29:05,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:05,679 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-12-22 05:29:05,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:29:05,679 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-12-22 05:29:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:29:05,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:05,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:05,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 05:29:05,886 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash -572369234, now seen corresponding path program 4 times [2020-12-22 05:29:05,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:05,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890174904] [2020-12-22 05:29:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:05,895 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:05,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921194308] [2020-12-22 05:29:05,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:29:06,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:29:06,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:06,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-22 05:29:06,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:06,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890174904] [2020-12-22 05:29:06,565 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:06,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921194308] [2020-12-22 05:29:06,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:06,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:29:06,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379314463] [2020-12-22 05:29:06,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:29:06,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:06,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:29:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:29:06,567 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 13 states. [2020-12-22 05:29:07,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:07,956 INFO L93 Difference]: Finished difference Result 201 states and 241 transitions. [2020-12-22 05:29:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:29:07,957 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-12-22 05:29:07,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:07,958 INFO L225 Difference]: With dead ends: 201 [2020-12-22 05:29:07,958 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:29:07,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:29:07,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:29:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 143. [2020-12-22 05:29:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 05:29:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-12-22 05:29:07,987 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2020-12-22 05:29:07,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:07,987 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-12-22 05:29:07,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:29:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-12-22 05:29:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 05:29:07,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:07,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:08,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:08,202 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:08,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:08,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1786473789, now seen corresponding path program 2 times [2020-12-22 05:29:08,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:08,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376231896] [2020-12-22 05:29:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:08,211 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:08,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864928213] [2020-12-22 05:29:08,211 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 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 05:29:08,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:08,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:08,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-22 05:29:08,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:09,462 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-12-22 05:29:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:29:09,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376231896] [2020-12-22 05:29:09,613 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:09,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864928213] [2020-12-22 05:29:09,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:09,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 05:29:09,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097657071] [2020-12-22 05:29:09,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 05:29:09,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:09,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 05:29:09,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:29:09,615 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 18 states. [2020-12-22 05:29:11,270 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-22 05:29:11,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:11,418 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2020-12-22 05:29:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:29:11,419 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-12-22 05:29:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:11,420 INFO L225 Difference]: With dead ends: 179 [2020-12-22 05:29:11,420 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 05:29:11,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2020-12-22 05:29:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 05:29:11,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-12-22 05:29:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-22 05:29:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-12-22 05:29:11,436 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 48 [2020-12-22 05:29:11,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:11,436 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-12-22 05:29:11,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 05:29:11,436 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-12-22 05:29:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:29:11,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:11,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:29:11,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:29:11,638 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:29:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:11,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1895924060, now seen corresponding path program 2 times [2020-12-22 05:29:11,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:11,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333521374] [2020-12-22 05:29:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:11,647 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:11,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024233820] [2020-12-22 05:29:11,648 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 05:29:11,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:29:11,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:11,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:29:11,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:12,010 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:29:12,732 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:29:18,779 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:29:20,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:29:22,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333521374] [2020-12-22 05:29:22,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:22,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024233820] [2020-12-22 05:29:22,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:29:22,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:29:22,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:29:22,828 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:29:22,828 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:29:23,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:23,053 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:29:23,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:29:23 BoogieIcfgContainer [2020-12-22 05:29:23,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:29:23,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:29:23,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:29:23,054 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:29:23,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:26:40" (3/4) ... [2020-12-22 05:29:23,058 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:29:23,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:29:23,059 INFO L168 Benchmark]: Toolchain (without parser) took 163237.44 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 128.2 MB in the beginning and 134.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:23,060 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:29:23,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.92 ms. Allocated memory is still 152.0 MB. Free memory was 127.9 MB in the beginning and 118.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:23,061 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.84 ms. Allocated memory is still 152.0 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:23,061 INFO L168 Benchmark]: Boogie Preprocessor took 31.97 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:23,064 INFO L168 Benchmark]: RCFGBuilder took 488.62 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 98.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:23,064 INFO L168 Benchmark]: TraceAbstraction took 162338.28 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 135.3 MB in the beginning and 134.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:29:23,065 INFO L168 Benchmark]: Witness Printer took 4.45 ms. Allocated memory is still 225.4 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:29:23,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.92 ms. Allocated memory is still 152.0 MB. Free memory was 127.9 MB in the beginning and 118.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.84 ms. Allocated memory is still 152.0 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.97 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 488.62 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 98.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 162338.28 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 135.3 MB in the beginning and 134.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. * Witness Printer took 4.45 ms. Allocated memory is still 225.4 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND TRUE !(p != 1) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 162.1s, OverallIterations: 28, TraceHistogramMax: 5, AutomataDifference: 133.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 861 SDtfs, 2274 SDslu, 2619 SDs, 0 SdLazy, 3100 SolverSat, 632 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 72.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 877 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 65.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 261 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 783 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 756 ConstructedInterpolants, 1 QuantifiedInterpolants, 332720 SizeOfPredicates, 187 NumberOfNonLiveVariables, 2972 ConjunctsInSsa, 563 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 51/491 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...