/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/dijkstra-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:52:32,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:52:32,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:52:32,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:52:32,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:52:32,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:52:32,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:52:32,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:52:32,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:52:32,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:52:32,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:52:32,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:52:32,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:52:32,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:52:32,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:52:32,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:52:32,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:52:32,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:52:32,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:52:32,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:52:32,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:52:32,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:52:32,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:52:32,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:52:32,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:52:32,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:52:32,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:52:32,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:52:32,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:52:32,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:52:32,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:52:32,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:52:32,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:52:32,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:52:32,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:52:32,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:52:32,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:52:32,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:52:32,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:52:32,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:52:32,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:52:32,238 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:52:32,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:52:32,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:52:32,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:52:32,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:52:32,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:52:32,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:52:32,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:52:32,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:52:32,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:52:32,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:52:32,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:52:32,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:52:32,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:52:32,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:52:32,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:52:32,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:52:32,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:52:32,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:52:32,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:52:32,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:52:32,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:52:32,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:52:32,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:52:32,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:52:32,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:52:32,666 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:52:32,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/dijkstra-u.c [2020-12-22 04:52:32,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc9ac255/5625f97d8ad740b382dc321b0bf63248/FLAGf10e3498e [2020-12-22 04:52:33,420 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:52:33,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/dijkstra-u.c [2020-12-22 04:52:33,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc9ac255/5625f97d8ad740b382dc321b0bf63248/FLAGf10e3498e [2020-12-22 04:52:33,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc9ac255/5625f97d8ad740b382dc321b0bf63248 [2020-12-22 04:52:33,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:52:33,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:52:33,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:52:33,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:52:33,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:52:33,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:52:33" (1/1) ... [2020-12-22 04:52:33,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e09a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:33, skipping insertion in model container [2020-12-22 04:52:33,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:52:33" (1/1) ... [2020-12-22 04:52:33,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:52:33,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:52:33,964 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/dijkstra-u.c[525,538] [2020-12-22 04:52:33,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:52:34,007 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:52:34,022 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/dijkstra-u.c[525,538] [2020-12-22 04:52:34,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:52:34,057 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:52:34,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34 WrapperNode [2020-12-22 04:52:34,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:52:34,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:52:34,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:52:34,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:52:34,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:52:34,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:52:34,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:52:34,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:52:34,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... [2020-12-22 04:52:34,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:52:34,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:52:34,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:52:34,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:52:34,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:52:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:52:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:52:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:52:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:52:35,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:52:35,042 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 04:52:35,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:52:35 BoogieIcfgContainer [2020-12-22 04:52:35,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:52:35,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:52:35,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:52:35,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:52:35,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:52:33" (1/3) ... [2020-12-22 04:52:35,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694be78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:52:35, skipping insertion in model container [2020-12-22 04:52:35,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:34" (2/3) ... [2020-12-22 04:52:35,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694be78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:52:35, skipping insertion in model container [2020-12-22 04:52:35,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:52:35" (3/3) ... [2020-12-22 04:52:35,054 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u.c [2020-12-22 04:52:35,061 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:52:35,067 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 04:52:35,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 04:52:35,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:52:35,113 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:52:35,113 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:52:35,113 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:52:35,113 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:52:35,114 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:52:35,114 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:52:35,114 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:52:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-12-22 04:52:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:52:35,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:35,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:35,140 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:35,146 INFO L82 PathProgramCache]: Analyzing trace with hash 119520859, now seen corresponding path program 1 times [2020-12-22 04:52:35,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:35,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786088824] [2020-12-22 04:52:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:35,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786088824] [2020-12-22 04:52:35,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:35,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:52:35,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938118853] [2020-12-22 04:52:35,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:52:35,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:35,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:52:35,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:52:35,356 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2020-12-22 04:52:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:35,381 INFO L93 Difference]: Finished difference Result 93 states and 124 transitions. [2020-12-22 04:52:35,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:52:35,383 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 04:52:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:35,394 INFO L225 Difference]: With dead ends: 93 [2020-12-22 04:52:35,394 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 04:52:35,398 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 04:52:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 04:52:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-12-22 04:52:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 04:52:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-12-22 04:52:35,443 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 8 [2020-12-22 04:52:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:35,443 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-12-22 04:52:35,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:52:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-12-22 04:52:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:52:35,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:35,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:35,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:52:35,445 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:35,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1186643548, now seen corresponding path program 1 times [2020-12-22 04:52:35,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:35,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127937154] [2020-12-22 04:52:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:35,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127937154] [2020-12-22 04:52:35,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:35,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:52:35,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3295893] [2020-12-22 04:52:35,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:52:35,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:35,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:52:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:52:35,690 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 5 states. [2020-12-22 04:52:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:49,572 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2020-12-22 04:52:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:52:49,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-22 04:52:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:49,574 INFO L225 Difference]: With dead ends: 108 [2020-12-22 04:52:49,574 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 04:52:49,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 04:52:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-12-22 04:52:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 04:52:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-22 04:52:49,591 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 9 [2020-12-22 04:52:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:49,591 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-22 04:52:49,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:52:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-22 04:52:49,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:52:49,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:49,593 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:49,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:52:49,594 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:49,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2054849417, now seen corresponding path program 1 times [2020-12-22 04:52:49,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:49,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770391279] [2020-12-22 04:52:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:49,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770391279] [2020-12-22 04:52:49,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989380413] [2020-12-22 04:52:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:49,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 04:52:49,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:50,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:52:50,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:52:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:50,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:52:50,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 04:52:50,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023248519] [2020-12-22 04:52:50,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:52:50,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:50,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:52:50,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:50,043 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 9 states. [2020-12-22 04:53:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:05,984 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2020-12-22 04:53:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 04:53:05,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-22 04:53:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:05,987 INFO L225 Difference]: With dead ends: 191 [2020-12-22 04:53:05,988 INFO L226 Difference]: Without dead ends: 145 [2020-12-22 04:53:05,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-12-22 04:53:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-22 04:53:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 112. [2020-12-22 04:53:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 04:53:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-12-22 04:53:06,018 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 11 [2020-12-22 04:53:06,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:06,019 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-12-22 04:53:06,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:53:06,019 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-12-22 04:53:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:53:06,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:06,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:06,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 04:53:06,236 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:06,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:06,237 INFO L82 PathProgramCache]: Analyzing trace with hash -583931454, now seen corresponding path program 1 times [2020-12-22 04:53:06,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:06,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113780689] [2020-12-22 04:53:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:06,259 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:06,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923806284] [2020-12-22 04:53:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:06,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:53:06,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:06,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113780689] [2020-12-22 04:53:06,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:06,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923806284] [2020-12-22 04:53:06,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:06,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:53:06,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454190863] [2020-12-22 04:53:06,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:53:06,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:06,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:53:06,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:53:06,424 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 6 states. [2020-12-22 04:53:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:09,253 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2020-12-22 04:53:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:53:09,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 04:53:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:09,256 INFO L225 Difference]: With dead ends: 123 [2020-12-22 04:53:09,256 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 04:53:09,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 04:53:09,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-12-22 04:53:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 04:53:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2020-12-22 04:53:09,280 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 13 [2020-12-22 04:53:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:09,280 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2020-12-22 04:53:09,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:53:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2020-12-22 04:53:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:53:09,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:09,281 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:09,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:09,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:09,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash 501883485, now seen corresponding path program 1 times [2020-12-22 04:53:09,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:09,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104954343] [2020-12-22 04:53:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:09,513 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:09,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979600483] [2020-12-22 04:53:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:09,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 04:53:09,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 04:53:09,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104954343] [2020-12-22 04:53:09,746 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:09,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979600483] [2020-12-22 04:53:09,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:09,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:53:09,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601767987] [2020-12-22 04:53:09,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:53:09,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:53:09,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:53:09,749 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand 6 states. [2020-12-22 04:53:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:17,350 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2020-12-22 04:53:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:53:17,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 04:53:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:17,352 INFO L225 Difference]: With dead ends: 110 [2020-12-22 04:53:17,352 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 04:53:17,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 04:53:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-12-22 04:53:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 04:53:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2020-12-22 04:53:17,368 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 15 [2020-12-22 04:53:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:17,368 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2020-12-22 04:53:17,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:53:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2020-12-22 04:53:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 04:53:17,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:17,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:17,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:17,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash 261056772, now seen corresponding path program 1 times [2020-12-22 04:53:17,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:17,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615947759] [2020-12-22 04:53:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:17,612 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:17,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276865519] [2020-12-22 04:53:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:17,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 04:53:17,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:18,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:53:18,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 04:53:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:18,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615947759] [2020-12-22 04:53:18,068 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:18,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276865519] [2020-12-22 04:53:18,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:18,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:53:18,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150270299] [2020-12-22 04:53:18,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:53:18,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:18,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:53:18,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:18,071 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand 8 states. [2020-12-22 04:53:37,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:37,605 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2020-12-22 04:53:37,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:53:37,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-22 04:53:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:37,606 INFO L225 Difference]: With dead ends: 127 [2020-12-22 04:53:37,606 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 04:53:37,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:37,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 04:53:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2020-12-22 04:53:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 04:53:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-12-22 04:53:37,637 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 25 [2020-12-22 04:53:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:37,638 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-12-22 04:53:37,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:53:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-12-22 04:53:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 04:53:37,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:37,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:37,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:37,843 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:37,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1767610983, now seen corresponding path program 1 times [2020-12-22 04:53:37,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:37,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876849745] [2020-12-22 04:53:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:37,866 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:37,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430233099] [2020-12-22 04:53:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:38,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 04:53:38,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:38,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876849745] [2020-12-22 04:53:38,553 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:38,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430233099] [2020-12-22 04:53:38,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:38,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:53:38,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163354434] [2020-12-22 04:53:38,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:53:38,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:38,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:53:38,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:53:38,556 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 11 states. [2020-12-22 04:53:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:56,387 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-12-22 04:53:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:53:56,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-12-22 04:53:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:56,389 INFO L225 Difference]: With dead ends: 100 [2020-12-22 04:53:56,389 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 04:53:56,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-22 04:53:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 04:53:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2020-12-22 04:53:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 04:53:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-12-22 04:53:56,401 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 27 [2020-12-22 04:53:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:56,401 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-12-22 04:53:56,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:53:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-12-22 04:53:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 04:53:56,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:56,403 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:56,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 04:53:56,609 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:56,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:56,610 INFO L82 PathProgramCache]: Analyzing trace with hash 252219679, now seen corresponding path program 2 times [2020-12-22 04:53:56,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:56,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659741567] [2020-12-22 04:53:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:56,631 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:56,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766948847] [2020-12-22 04:53:56,631 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 04:53:56,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:56,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:56,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 04:53:56,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:57,142 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:53:57,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 04:53:57,188 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 04:53:57,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659741567] [2020-12-22 04:53:57,189 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:57,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766948847] [2020-12-22 04:53:57,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:57,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:53:57,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375432317] [2020-12-22 04:53:57,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:53:57,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:57,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:53:57,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:57,192 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 9 states. [2020-12-22 04:54:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:54:04,449 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2020-12-22 04:54:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 04:54:04,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 04:54:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:54:04,451 INFO L225 Difference]: With dead ends: 184 [2020-12-22 04:54:04,452 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 04:54:04,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:54:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 04:54:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 122. [2020-12-22 04:54:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-22 04:54:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2020-12-22 04:54:04,467 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 27 [2020-12-22 04:54:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:54:04,467 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2020-12-22 04:54:04,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:54:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2020-12-22 04:54:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 04:54:04,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:54:04,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:54:04,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:54:04,683 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:54:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:54:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2132737942, now seen corresponding path program 1 times [2020-12-22 04:54:04,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:54:04,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875037753] [2020-12-22 04:54:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:54:04,702 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:54:04,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035176018] [2020-12-22 04:54:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:54:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:54:06,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 04:54:06,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:54:11,081 WARN L197 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2020-12-22 04:54:11,134 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 04:54:11,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875037753] [2020-12-22 04:54:11,134 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:54:11,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035176018] [2020-12-22 04:54:11,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:54:11,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:54:11,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108271548] [2020-12-22 04:54:11,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:54:11,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:54:11,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:54:11,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:54:11,137 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand 11 states. [2020-12-22 04:54:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:54:22,118 INFO L93 Difference]: Finished difference Result 177 states and 197 transitions. [2020-12-22 04:54:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:54:22,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-12-22 04:54:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:54:22,120 INFO L225 Difference]: With dead ends: 177 [2020-12-22 04:54:22,120 INFO L226 Difference]: Without dead ends: 128 [2020-12-22 04:54:22,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-12-22 04:54:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-22 04:54:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-12-22 04:54:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-22 04:54:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2020-12-22 04:54:22,137 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 29 [2020-12-22 04:54:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:54:22,137 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2020-12-22 04:54:22,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:54:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2020-12-22 04:54:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 04:54:22,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:54:22,149 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:54:22,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:54:22,354 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:54:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:54:22,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1865099202, now seen corresponding path program 2 times [2020-12-22 04:54:22,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:54:22,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442254349] [2020-12-22 04:54:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:54:22,374 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:54:22,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127403858] [2020-12-22 04:54:22,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true