/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_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:27:30,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:27:30,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:27:30,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:27:30,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:27:30,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:27:31,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:27:31,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:27:31,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:27:31,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:27:31,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:27:31,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:27:31,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:27:31,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:27:31,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:27:31,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:27:31,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:27:31,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:27:31,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:27:31,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:27:31,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:27:31,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:27:31,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:27:31,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:27:31,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:27:31,113 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:27:31,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:27:31,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:27:31,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:27:31,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:27:31,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:27:31,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:27:31,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:27:31,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:27:31,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:27:31,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:27:31,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:27:31,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:27:31,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:27:31,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:27:31,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:27:31,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:27:31,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:27:31,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:27:31,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:27:31,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:27:31,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:27:31,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:27:31,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:27:31,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:27:31,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:27:31,562 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:27:31,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound50.c [2020-12-22 05:27:31,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777f31c38/a3a8b2dd9ff7407f89e92b5a041f3dd8/FLAGe2b62595d [2020-12-22 05:27:32,403 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:27:32,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound50.c [2020-12-22 05:27:32,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777f31c38/a3a8b2dd9ff7407f89e92b5a041f3dd8/FLAGe2b62595d [2020-12-22 05:27:32,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777f31c38/a3a8b2dd9ff7407f89e92b5a041f3dd8 [2020-12-22 05:27:32,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:27:32,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:27:32,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:27:32,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:27:32,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:27:32,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:27:32" (1/1) ... [2020-12-22 05:27:32,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15972c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:32, skipping insertion in model container [2020-12-22 05:27:32,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:27:32" (1/1) ... [2020-12-22 05:27:32,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:27:32,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:27:32,983 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_unwindbound50.c[538,551] [2020-12-22 05:27:33,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:27:33,014 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:27:33,029 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_unwindbound50.c[538,551] [2020-12-22 05:27:33,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:27:33,059 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:27:33,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33 WrapperNode [2020-12-22 05:27:33,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:27:33,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:27:33,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:27:33,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:27:33,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:27:33,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:27:33,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:27:33,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:27:33,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (1/1) ... [2020-12-22 05:27:33,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:27:33,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:27:33,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:27:33,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:27:33,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (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 05:27:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:27:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:27:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:27:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:27:33,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:27:33,787 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 05:27:33,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:33 BoogieIcfgContainer [2020-12-22 05:27:33,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:27:33,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:27:33,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:27:33,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:27:33,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:27:32" (1/3) ... [2020-12-22 05:27:33,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ecdf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:27:33, skipping insertion in model container [2020-12-22 05:27:33,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:33" (2/3) ... [2020-12-22 05:27:33,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ecdf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:27:33, skipping insertion in model container [2020-12-22 05:27:33,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:33" (3/3) ... [2020-12-22 05:27:33,800 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound50.c [2020-12-22 05:27:33,808 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:27:33,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:27:33,862 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:27:33,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:27:33,906 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:27:33,906 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:27:33,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:27:33,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:27:33,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:27:33,909 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:27:33,909 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:27:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 05:27:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:27:33,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:33,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:33,935 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 05:27:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:33,942 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-22 05:27:33,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:33,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872807304] [2020-12-22 05:27:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:34,127 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 05:27:34,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872807304] [2020-12-22 05:27:34,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:34,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:27:34,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876337515] [2020-12-22 05:27:34,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:27:34,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:34,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:27:34,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:27:34,162 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 05:27:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:34,197 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-22 05:27:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:27:34,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:27:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:34,225 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:27:34,225 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:27:34,231 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 05:27:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:27:34,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:27:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:27:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:27:34,286 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-22 05:27:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:34,287 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:27:34,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:27:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:27:34,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:27:34,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:34,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:34,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:27:34,293 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 05:27:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:34,296 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:27:34,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:34,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209903994] [2020-12-22 05:27:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:34,472 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 05:27:34,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209903994] [2020-12-22 05:27:34,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:34,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:27:34,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205818956] [2020-12-22 05:27:34,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:27:34,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:34,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:27:34,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:27:34,478 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:27:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:34,633 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-22 05:27:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:34,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:27:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:34,637 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:27:34,638 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:27:34,639 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 05:27:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:27:34,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-22 05:27:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:27:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:27:34,656 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:27:34,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:34,656 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:27:34,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:27:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:27:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:27:34,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:34,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:34,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:27:34,661 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 05:27:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:34,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-22 05:27:34,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:34,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904497205] [2020-12-22 05:27:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:34,765 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 05:27:34,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904497205] [2020-12-22 05:27:34,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:34,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:27:34,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217576902] [2020-12-22 05:27:34,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:27:34,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:34,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:27:34,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:27:34,769 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:27:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:34,791 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-22 05:27:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:27:34,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:27:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:34,792 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:27:34,793 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:27:34,793 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 05:27:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:27:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:27:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:27:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:27:34,801 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-22 05:27:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:34,801 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:27:34,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:27:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:27:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:27:34,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:34,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:34,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:27:34,803 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 05:27:34,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:34,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-22 05:27:34,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:34,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912822214] [2020-12-22 05:27:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:34,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912822214] [2020-12-22 05:27:34,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:34,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:27:34,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819072197] [2020-12-22 05:27:34,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:27:34,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:34,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:27:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:27:34,917 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:27:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:35,058 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-22 05:27:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:35,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:27:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:35,060 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:27:35,060 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:27:35,061 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 05:27:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:27:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:27:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:27:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:27:35,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-22 05:27:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:35,070 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:27:35,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:27:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:27:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:27:35,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:35,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:35,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:27:35,071 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 05:27:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-22 05:27:35,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:35,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56470786] [2020-12-22 05:27:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:35,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:35,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344574532] [2020-12-22 05:27:35,089 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 05:27:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:35,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:27:35,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:35,263 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 05:27:35,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56470786] [2020-12-22 05:27:35,264 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:35,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344574532] [2020-12-22 05:27:35,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:35,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:27:35,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569677370] [2020-12-22 05:27:35,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:27:35,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:35,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:27:35,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:35,267 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-22 05:27:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:35,456 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-22 05:27:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:35,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 05:27:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:35,458 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:27:35,458 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:27:35,458 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 05:27:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:27:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-22 05:27:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:27:35,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-22 05:27:35,468 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-22 05:27:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:35,469 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-22 05:27:35,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:27:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-22 05:27:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:27:35,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:35,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:35,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:35,686 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 05:27:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:35,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-22 05:27:35,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:35,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055948918] [2020-12-22 05:27:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:35,701 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:35,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145648163] [2020-12-22 05:27:35,702 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 05:27:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:35,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:27:35,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:35,908 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 05:27:35,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055948918] [2020-12-22 05:27:35,909 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:35,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145648163] [2020-12-22 05:27:35,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:35,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:27:35,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219580838] [2020-12-22 05:27:35,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:35,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:35,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:35,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:27:35,912 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-22 05:27:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:36,209 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-22 05:27:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:27:36,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:27:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:36,210 INFO L225 Difference]: With dead ends: 53 [2020-12-22 05:27:36,210 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 05:27:36,211 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 05:27:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 05:27:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 05:27:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:27:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-22 05:27:36,218 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-22 05:27:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:36,219 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-22 05:27:36,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:27:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-22 05:27:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:27:36,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:36,220 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 05:27:36,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:36,435 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 05:27:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-22 05:27:36,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:36,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975036537] [2020-12-22 05:27:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:36,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:36,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892905849] [2020-12-22 05:27:36,449 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 05:27:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:36,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:27:36,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:36,544 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 05:27:36,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975036537] [2020-12-22 05:27:36,544 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:36,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892905849] [2020-12-22 05:27:36,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:36,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:27:36,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963398263] [2020-12-22 05:27:36,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:27:36,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:36,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:27:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:27:36,547 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-22 05:27:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:36,575 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-22 05:27:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:27:36,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:27:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:36,576 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:27:36,577 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 05:27:36,577 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 05:27:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 05:27:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 05:27:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 05:27:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-22 05:27:36,605 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-22 05:27:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:36,606 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-22 05:27:36,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:27:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-22 05:27:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:27:36,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:36,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:36,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:36,829 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 05:27:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:36,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-22 05:27:36,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:36,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615997856] [2020-12-22 05:27:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:36,843 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:36,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262747268] [2020-12-22 05:27:36,843 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 05:27:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:36,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:27:36,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:37,123 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 05:27:37,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615997856] [2020-12-22 05:27:37,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:37,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262747268] [2020-12-22 05:27:37,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:37,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:27:37,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922695494] [2020-12-22 05:27:37,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:27:37,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:37,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:27:37,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:27:37,126 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2020-12-22 05:27:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:37,617 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-12-22 05:27:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:27:37,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-12-22 05:27:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:37,619 INFO L225 Difference]: With dead ends: 106 [2020-12-22 05:27:37,619 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 05:27:37,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:27:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 05:27:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-12-22 05:27:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:27:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-22 05:27:37,630 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 20 [2020-12-22 05:27:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:37,630 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-22 05:27:37,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:27:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-22 05:27:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:27:37,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:37,632 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 05:27:37,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:37,847 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 05:27:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-22 05:27:37,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:37,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254041738] [2020-12-22 05:27:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:37,859 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:37,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497357920] [2020-12-22 05:27:37,860 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 05:27:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:37,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:27:37,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:38,158 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 05:27:38,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254041738] [2020-12-22 05:27:38,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:38,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497357920] [2020-12-22 05:27:38,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:38,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:27:38,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921364909] [2020-12-22 05:27:38,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:27:38,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:38,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:27:38,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:27:38,161 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 8 states. [2020-12-22 05:27:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:38,805 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-12-22 05:27:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:27:38,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-22 05:27:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:38,807 INFO L225 Difference]: With dead ends: 74 [2020-12-22 05:27:38,807 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 05:27:38,808 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 05:27:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 05:27:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-12-22 05:27:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 05:27:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-12-22 05:27:38,817 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2020-12-22 05:27:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:38,817 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-12-22 05:27:38,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:27:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-12-22 05:27:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:27:38,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:38,819 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 05:27:39,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:39,033 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 05:27:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1637703955, now seen corresponding path program 2 times [2020-12-22 05:27:39,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:39,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456766687] [2020-12-22 05:27:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:39,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:39,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108756504] [2020-12-22 05:27:39,047 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 05:27:39,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:27:39,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:39,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:27:39,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:39,154 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 05:27:39,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456766687] [2020-12-22 05:27:39,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:39,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108756504] [2020-12-22 05:27:39,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:39,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:27:39,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012314762] [2020-12-22 05:27:39,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:27:39,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:39,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:27:39,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:27:39,161 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2020-12-22 05:27:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:39,215 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-12-22 05:27:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:27:39,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 05:27:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:39,218 INFO L225 Difference]: With dead ends: 87 [2020-12-22 05:27:39,219 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 05:27:39,220 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 05:27:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 05:27:39,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-12-22 05:27:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 05:27:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-12-22 05:27:39,231 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 26 [2020-12-22 05:27:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:39,231 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-12-22 05:27:39,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:27:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-12-22 05:27:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:27:39,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:39,234 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 05:27:39,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:39,449 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 05:27:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:39,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-22 05:27:39,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:39,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189932037] [2020-12-22 05:27:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:39,472 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:39,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598802404] [2020-12-22 05:27:39,473 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 05:27:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:39,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:27:39,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:39,580 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 05:27:39,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189932037] [2020-12-22 05:27:39,581 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:39,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598802404] [2020-12-22 05:27:39,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:39,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:27:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500159917] [2020-12-22 05:27:39,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:27:39,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:27:39,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:39,583 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 6 states. [2020-12-22 05:27:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:39,607 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-12-22 05:27:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:27:39,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:27:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:39,609 INFO L225 Difference]: With dead ends: 65 [2020-12-22 05:27:39,609 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:27:39,609 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 05:27:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:27:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-12-22 05:27:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 05:27:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-12-22 05:27:39,617 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 27 [2020-12-22 05:27:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:39,618 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-12-22 05:27:39,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:27:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-12-22 05:27:39,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:27:39,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:39,619 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 05:27:39,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:39,834 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 05:27:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:39,835 INFO L82 PathProgramCache]: Analyzing trace with hash -770811653, now seen corresponding path program 1 times [2020-12-22 05:27:39,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:39,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983104230] [2020-12-22 05:27:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:39,848 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:39,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903124356] [2020-12-22 05:27:39,848 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 05:27:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:39,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:27:39,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:39,976 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 05:27:39,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983104230] [2020-12-22 05:27:39,977 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:39,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903124356] [2020-12-22 05:27:39,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:39,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:27:39,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611570981] [2020-12-22 05:27:39,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:27:39,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:39,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:27:39,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:39,981 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-12-22 05:27:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:40,021 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-12-22 05:27:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:27:40,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:27:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:40,022 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:27:40,022 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:27:40,023 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 05:27:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:27:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-22 05:27:40,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 05:27:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-12-22 05:27:40,030 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 27 [2020-12-22 05:27:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:40,030 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-12-22 05:27:40,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:27:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-12-22 05:27:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:27:40,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:40,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:40,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:27:40,245 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 05:27:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:40,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-22 05:27:40,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:40,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272158818] [2020-12-22 05:27:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:40,256 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:40,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686913060] [2020-12-22 05:27:40,257 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 05:27:40,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:27:40,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:40,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 05:27:40,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:40,805 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 05:27:40,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272158818] [2020-12-22 05:27:40,805 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:40,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686913060] [2020-12-22 05:27:40,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:40,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:27:40,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98835580] [2020-12-22 05:27:40,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:27:40,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:40,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:27:40,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:27:40,807 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2020-12-22 05:27:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:44,168 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-12-22 05:27:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:27:44,169 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-12-22 05:27:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:44,170 INFO L225 Difference]: With dead ends: 119 [2020-12-22 05:27:44,170 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 05:27:44,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:27:44,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 05:27:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2020-12-22 05:27:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 05:27:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-12-22 05:27:44,185 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 28 [2020-12-22 05:27:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:44,185 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-12-22 05:27:44,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:27:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-12-22 05:27:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:27:44,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:44,186 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 05:27:44,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:44,400 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 05:27:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-22 05:27:44,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:44,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524319664] [2020-12-22 05:27:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:44,413 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:44,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347455299] [2020-12-22 05:27:44,413 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 05:27:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:44,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:27:44,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:44,857 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 05:27:44,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524319664] [2020-12-22 05:27:44,858 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:44,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347455299] [2020-12-22 05:27:44,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:44,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:27:44,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231291284] [2020-12-22 05:27:44,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:27:44,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:44,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:27:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:27:44,860 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 10 states. [2020-12-22 05:27:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:45,587 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-12-22 05:27:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:27:45,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 05:27:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:45,588 INFO L225 Difference]: With dead ends: 101 [2020-12-22 05:27:45,589 INFO L226 Difference]: Without dead ends: 99 [2020-12-22 05:27:45,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:27:45,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-22 05:27:45,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2020-12-22 05:27:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 05:27:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-12-22 05:27:45,601 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 31 [2020-12-22 05:27:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:45,601 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-12-22 05:27:45,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:27:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-12-22 05:27:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:27:45,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:45,602 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 05:27:45,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:45,818 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 05:27:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1414538084, now seen corresponding path program 1 times [2020-12-22 05:27:45,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:45,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997221432] [2020-12-22 05:27:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:45,832 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:45,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946744543] [2020-12-22 05:27:45,833 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 05:27:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:45,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:27:45,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:45,952 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 05:27:45,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997221432] [2020-12-22 05:27:45,953 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:45,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946744543] [2020-12-22 05:27:45,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:45,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:27:45,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916947713] [2020-12-22 05:27:45,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:45,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:45,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:27:45,955 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 7 states. [2020-12-22 05:27:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:45,997 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-12-22 05:27:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:27:45,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 05:27:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:45,998 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:27:45,998 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:27:45,999 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 05:27:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:27:46,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-12-22 05:27:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 05:27:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-12-22 05:27:46,011 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 32 [2020-12-22 05:27:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:46,011 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-12-22 05:27:46,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:27:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-12-22 05:27:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:27:46,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:46,012 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 05:27:46,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:27:46,227 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 05:27:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:46,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1150939168, now seen corresponding path program 2 times [2020-12-22 05:27:46,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:46,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086045072] [2020-12-22 05:27:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:46,242 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:46,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895330925] [2020-12-22 05:27:46,244 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 05:27:46,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:27:46,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:46,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 05:27:46,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:46,416 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 05:27:46,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086045072] [2020-12-22 05:27:46,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:46,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895330925] [2020-12-22 05:27:46,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:46,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:27:46,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334143817] [2020-12-22 05:27:46,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:46,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:46,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:46,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:27:46,419 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 7 states. [2020-12-22 05:27:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:46,620 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2020-12-22 05:27:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:27:46,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-12-22 05:27:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:46,622 INFO L225 Difference]: With dead ends: 113 [2020-12-22 05:27:46,622 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:27:46,623 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 05:27:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:27:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-12-22 05:27:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 05:27:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2020-12-22 05:27:46,635 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 32 [2020-12-22 05:27:46,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:46,635 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2020-12-22 05:27:46,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:27:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2020-12-22 05:27:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:27:46,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:46,636 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 05:27:46,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:27:46,851 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 05:27:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:46,852 INFO L82 PathProgramCache]: Analyzing trace with hash -900022411, now seen corresponding path program 1 times [2020-12-22 05:27:46,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:46,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429357726] [2020-12-22 05:27:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:46,868 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:46,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360662861] [2020-12-22 05:27:46,869 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 05:27:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:46,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:27:46,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:47,187 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 05:27:47,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429357726] [2020-12-22 05:27:47,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:47,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360662861] [2020-12-22 05:27:47,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:47,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:27:47,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433568622] [2020-12-22 05:27:47,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:27:47,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:47,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:27:47,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:27:47,190 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 9 states. [2020-12-22 05:27:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:47,747 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2020-12-22 05:27:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:27:47,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-22 05:27:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:47,749 INFO L225 Difference]: With dead ends: 132 [2020-12-22 05:27:47,749 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 05:27:47,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:27:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 05:27:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-12-22 05:27:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-12-22 05:27:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-12-22 05:27:47,761 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 33 [2020-12-22 05:27:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:47,761 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-12-22 05:27:47,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:27:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-12-22 05:27:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:27:47,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:47,762 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 05:27:47,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:27:47,976 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 05:27:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:47,977 INFO L82 PathProgramCache]: Analyzing trace with hash 918142130, now seen corresponding path program 1 times [2020-12-22 05:27:47,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:47,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158233455] [2020-12-22 05:27:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:47,986 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:47,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66765281] [2020-12-22 05:27:47,987 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 05:27:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:48,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:27:48,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:48,318 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 05:27:48,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158233455] [2020-12-22 05:27:48,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:48,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66765281] [2020-12-22 05:27:48,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:48,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:27:48,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896173025] [2020-12-22 05:27:48,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:27:48,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:48,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:27:48,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:27:48,321 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 10 states. [2020-12-22 05:27:49,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:49,326 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-12-22 05:27:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:27:49,327 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-12-22 05:27:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:49,328 INFO L225 Difference]: With dead ends: 154 [2020-12-22 05:27:49,328 INFO L226 Difference]: Without dead ends: 137 [2020-12-22 05:27:49,328 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 05:27:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-22 05:27:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2020-12-22 05:27:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 05:27:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-12-22 05:27:49,339 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 36 [2020-12-22 05:27:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:49,339 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-12-22 05:27:49,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:27:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-12-22 05:27:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:27:49,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:49,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:49,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:49,555 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 05:27:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:49,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1625393032, now seen corresponding path program 3 times [2020-12-22 05:27:49,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:49,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872743258] [2020-12-22 05:27:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:49,565 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:49,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877949327] [2020-12-22 05:27:49,565 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 05:27:49,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:27:49,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:49,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:27:49,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:52,550 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 05:27:52,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872743258] [2020-12-22 05:27:52,550 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:52,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877949327] [2020-12-22 05:27:52,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:52,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:27:52,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343022190] [2020-12-22 05:27:52,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:27:52,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:52,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:27:52,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2020-12-22 05:27:52,552 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 7 states. [2020-12-22 05:29:02,250 WARN L197 SmtUtils]: Spent 22.25 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-12-22 05:29:15,306 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-22 05:29:58,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:58,659 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2020-12-22 05:29:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:29:58,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-22 05:29:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:58,661 INFO L225 Difference]: With dead ends: 154 [2020-12-22 05:29:58,661 INFO L226 Difference]: Without dead ends: 144 [2020-12-22 05:29:58,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 61.4s TimeCoverageRelationStatistics Valid=71, Invalid=155, Unknown=14, NotChecked=0, Total=240 [2020-12-22 05:29:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-22 05:29:58,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2020-12-22 05:29:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 05:29:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2020-12-22 05:29:58,676 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 36 [2020-12-22 05:29:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:58,676 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2020-12-22 05:29:58,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:29:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2020-12-22 05:29:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:29:58,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:58,677 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 05:29:58,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:58,892 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 05:29:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1658895220, now seen corresponding path program 1 times [2020-12-22 05:29:58,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:58,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660589885] [2020-12-22 05:29:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:58,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:58,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023135386] [2020-12-22 05:29:58,901 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 05:29:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:29:58,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:29:58,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:29:59,047 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 05:29:59,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660589885] [2020-12-22 05:29:59,048 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:29:59,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023135386] [2020-12-22 05:29:59,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:29:59,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:29:59,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205698021] [2020-12-22 05:29:59,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:29:59,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:29:59,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:29:59,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:29:59,050 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand 7 states. [2020-12-22 05:29:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:29:59,128 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-12-22 05:29:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:29:59,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-22 05:29:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:29:59,130 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:29:59,130 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 05:29:59,130 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 05:29:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 05:29:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-22 05:29:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 05:29:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2020-12-22 05:29:59,143 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 37 [2020-12-22 05:29:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:29:59,144 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2020-12-22 05:29:59,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:29:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2020-12-22 05:29:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:29:59,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:29:59,145 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 05:29:59,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:29:59,358 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 05:29:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:29:59,358 INFO L82 PathProgramCache]: Analyzing trace with hash 406136064, now seen corresponding path program 2 times [2020-12-22 05:29:59,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:29:59,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220653932] [2020-12-22 05:29:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:29:59,373 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:29:59,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202672444] [2020-12-22 05:29:59,374 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 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 05:29:59,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:29:59,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:29:59,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 05:29:59,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:00,124 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 05:30:00,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220653932] [2020-12-22 05:30:00,124 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:00,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202672444] [2020-12-22 05:30:00,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:00,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:30:00,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051865847] [2020-12-22 05:30:00,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:30:00,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:30:00,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:30:00,127 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand 13 states. [2020-12-22 05:30:01,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:01,256 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2020-12-22 05:30:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:30:01,257 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-22 05:30:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:01,258 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:30:01,259 INFO L226 Difference]: Without dead ends: 122 [2020-12-22 05:30:01,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:30:01,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-22 05:30:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2020-12-22 05:30:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 05:30:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-12-22 05:30:01,272 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 39 [2020-12-22 05:30:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:01,272 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-12-22 05:30:01,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:30:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-12-22 05:30:01,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 05:30:01,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:01,273 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 05:30:01,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:30:01,489 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 05:30:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:01,490 INFO L82 PathProgramCache]: Analyzing trace with hash -294710610, now seen corresponding path program 2 times [2020-12-22 05:30:01,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:01,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740634879] [2020-12-22 05:30:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:01,500 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:01,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393593935] [2020-12-22 05:30:01,501 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 05:30:01,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:01,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:01,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:30:01,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:01,694 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 05:30:01,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740634879] [2020-12-22 05:30:01,695 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:01,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393593935] [2020-12-22 05:30:01,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:01,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:30:01,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613204395] [2020-12-22 05:30:01,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:30:01,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:01,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:30:01,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:30:01,697 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 8 states. [2020-12-22 05:30:01,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:01,756 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2020-12-22 05:30:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:30:01,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-22 05:30:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:01,763 INFO L225 Difference]: With dead ends: 130 [2020-12-22 05:30:01,763 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 05:30:01,764 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 05:30:01,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 05:30:01,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-12-22 05:30:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 05:30:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2020-12-22 05:30:01,777 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 40 [2020-12-22 05:30:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:01,778 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2020-12-22 05:30:01,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:30:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2020-12-22 05:30:01,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:30:01,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:01,779 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 05:30:01,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:30:01,994 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 05:30:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:01,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2116618682, now seen corresponding path program 2 times [2020-12-22 05:30:01,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:01,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738031072] [2020-12-22 05:30:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:02,003 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:02,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190323644] [2020-12-22 05:30:02,004 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 05:30:02,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:02,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:02,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:30:02,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:02,193 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 05:30:02,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738031072] [2020-12-22 05:30:02,194 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:02,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190323644] [2020-12-22 05:30:02,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:02,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:30:02,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064276834] [2020-12-22 05:30:02,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:30:02,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:02,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:30:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:30:02,197 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 8 states. [2020-12-22 05:30:02,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:02,296 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-12-22 05:30:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:30:02,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 05:30:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:02,297 INFO L225 Difference]: With dead ends: 129 [2020-12-22 05:30:02,297 INFO L226 Difference]: Without dead ends: 121 [2020-12-22 05:30:02,298 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 05:30:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-22 05:30:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-12-22 05:30:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 05:30:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-12-22 05:30:02,312 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 45 [2020-12-22 05:30:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:02,312 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-12-22 05:30:02,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:30:02,312 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-12-22 05:30:02,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:30:02,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:02,313 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 05:30:02,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 05:30:02,527 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 05:30:02,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:02,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1302416352, now seen corresponding path program 3 times [2020-12-22 05:30:02,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:02,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807832905] [2020-12-22 05:30:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:02,535 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:02,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962978286] [2020-12-22 05:30:02,535 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 05:30:02,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:30:02,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:02,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 70 conjunts are in the unsatisfiable core [2020-12-22 05:30:02,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:03,528 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 05:30:03,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807832905] [2020-12-22 05:30:03,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:03,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962978286] [2020-12-22 05:30:03,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:03,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:30:03,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984240378] [2020-12-22 05:30:03,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:30:03,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:03,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:30:03,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:30:03,531 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 15 states. [2020-12-22 05:30:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:05,004 INFO L93 Difference]: Finished difference Result 171 states and 205 transitions. [2020-12-22 05:30:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:30:05,009 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-12-22 05:30:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:05,010 INFO L225 Difference]: With dead ends: 171 [2020-12-22 05:30:05,010 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 05:30:05,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:30:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 05:30:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-12-22 05:30:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 05:30:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-12-22 05:30:05,025 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 46 [2020-12-22 05:30:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:05,025 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-12-22 05:30:05,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:30:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-12-22 05:30:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:30:05,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:05,026 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 05:30:05,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 05:30:05,240 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 05:30:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:05,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1720227954, now seen corresponding path program 3 times [2020-12-22 05:30:05,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:05,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137768311] [2020-12-22 05:30:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:05,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:05,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787001708] [2020-12-22 05:30:05,250 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 05:30:05,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:30:05,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:05,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:30:05,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:05,601 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 05:30:05,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137768311] [2020-12-22 05:30:05,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:05,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787001708] [2020-12-22 05:30:05,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:05,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:30:05,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264323041] [2020-12-22 05:30:05,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:30:05,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:05,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:30:05,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:30:05,603 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 9 states. [2020-12-22 05:30:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:05,698 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2020-12-22 05:30:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:30:05,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-12-22 05:30:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:05,700 INFO L225 Difference]: With dead ends: 152 [2020-12-22 05:30:05,700 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 05:30:05,700 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 05:30:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 05:30:05,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-12-22 05:30:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-22 05:30:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-12-22 05:30:05,715 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 47 [2020-12-22 05:30:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:05,716 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-12-22 05:30:05,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:30:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-12-22 05:30:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:30:05,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:05,717 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 05:30:05,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 05:30:05,921 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 05:30:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:05,921 INFO L82 PathProgramCache]: Analyzing trace with hash -572369234, now seen corresponding path program 4 times [2020-12-22 05:30:05,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:05,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287173328] [2020-12-22 05:30:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:05,929 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:05,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089865510] [2020-12-22 05:30:05,929 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 05:30:06,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:30:06,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:06,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 05:30:06,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:06,700 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 05:30:06,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287173328] [2020-12-22 05:30:06,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:06,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089865510] [2020-12-22 05:30:06,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:06,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:30:06,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702587298] [2020-12-22 05:30:06,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:30:06,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:30:06,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:30:06,703 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 13 states. [2020-12-22 05:30:08,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:08,218 INFO L93 Difference]: Finished difference Result 201 states and 241 transitions. [2020-12-22 05:30:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:30:08,220 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-12-22 05:30:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:08,221 INFO L225 Difference]: With dead ends: 201 [2020-12-22 05:30:08,221 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:30:08,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:30:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:30:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 143. [2020-12-22 05:30:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 05:30:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-12-22 05:30:08,249 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2020-12-22 05:30:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:08,249 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-12-22 05:30:08,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:30:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-12-22 05:30:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 05:30:08,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:08,250 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 05:30:08,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:08,464 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 05:30:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1786473789, now seen corresponding path program 2 times [2020-12-22 05:30:08,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:08,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378110023] [2020-12-22 05:30:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:08,477 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:08,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820420870] [2020-12-22 05:30:08,478 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 05:30:08,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:08,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:08,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-22 05:30:08,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:09,836 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-12-22 05:30:10,010 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 05:30:10,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378110023] [2020-12-22 05:30:10,011 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:10,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820420870] [2020-12-22 05:30:10,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:10,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 05:30:10,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028832458] [2020-12-22 05:30:10,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 05:30:10,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:10,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 05:30:10,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:30:10,013 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 18 states. [2020-12-22 05:30:11,719 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2020-12-22 05:30:11,926 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-12-22 05:30:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:12,090 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2020-12-22 05:30:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:30:12,092 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-12-22 05:30:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:12,093 INFO L225 Difference]: With dead ends: 179 [2020-12-22 05:30:12,093 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 05:30:12,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2020-12-22 05:30:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 05:30:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-12-22 05:30:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-22 05:30:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-12-22 05:30:12,117 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 48 [2020-12-22 05:30:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:12,117 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-12-22 05:30:12,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 05:30:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-12-22 05:30:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:30:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:12,118 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 05:30:12,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:30:12,331 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 05:30:12,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1895924060, now seen corresponding path program 2 times [2020-12-22 05:30:12,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:12,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998246372] [2020-12-22 05:30:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:12,340 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:12,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371050315] [2020-12-22 05:30:12,341 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 05:30:12,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:30:12,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:12,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:30:12,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:14,630 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:30:16,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:30:22,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:30:25,001 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:30:27,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998246372] [2020-12-22 05:30:27,049 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:27,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371050315] [2020-12-22 05:30:27,049 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:30:27,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:27,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:30:27,049 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:30:27,049 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:30:27,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:27,277 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:30:27,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:30:27 BoogieIcfgContainer [2020-12-22 05:30:27,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:30:27,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:30:27,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:30:27,278 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:30:27,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:33" (3/4) ... [2020-12-22 05:30:27,283 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:30:27,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:30:27,284 INFO L168 Benchmark]: Toolchain (without parser) took 174496.98 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 125.6 MB in the beginning and 157.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:27,284 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:30:27,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:27,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:27,285 INFO L168 Benchmark]: Boogie Preprocessor took 39.70 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:27,286 INFO L168 Benchmark]: RCFGBuilder took 641.52 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 127.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:27,287 INFO L168 Benchmark]: TraceAbstraction took 173485.65 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 127.5 MB in the beginning and 157.7 MB in the end (delta: -30.3 MB). Peak memory consumption was 51.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:27,288 INFO L168 Benchmark]: Witness Printer took 4.78 ms. Allocated memory is still 231.7 MB. Free memory is still 157.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:30:27,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.34 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.70 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 641.52 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 127.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 173485.65 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 127.5 MB in the beginning and 157.7 MB in the end (delta: -30.3 MB). Peak memory consumption was 51.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.78 ms. Allocated memory is still 231.7 MB. Free memory is still 157.7 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++<50 [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++<50 [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++<50 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<50 [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++<50 [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++<50 [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: 173.3s, OverallIterations: 28, TraceHistogramMax: 5, AutomataDifference: 140.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 862 SDtfs, 2248 SDslu, 2607 SDs, 0 SdLazy, 3005 SolverSat, 628 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 72.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 876 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 72.6s 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, 1.2s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 783 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 756 ConstructedInterpolants, 1 QuantifiedInterpolants, 332720 SizeOfPredicates, 186 NumberOfNonLiveVariables, 2972 ConjunctsInSsa, 561 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...