/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-u_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:30:47,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:30:47,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:30:47,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:30:47,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:30:47,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:30:47,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:30:47,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:30:47,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:30:47,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:30:47,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:30:47,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:30:47,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:30:47,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:30:47,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:30:47,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:30:47,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:30:47,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:30:47,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:30:47,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:30:47,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:30:47,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:30:47,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:30:47,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:30:47,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:30:47,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:30:47,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:30:47,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:30:47,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:30:47,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:30:47,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:30:47,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:30:47,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:30:47,722 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:30:47,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:30:47,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:30:47,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:30:47,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:30:47,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:30:47,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:30:47,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:30:47,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:30:47,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:30:47,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:30:47,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:30:47,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:30:47,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:30:47,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:30:47,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:30:47,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:30:47,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:30:47,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:30:47,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:30:47,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:30:47,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:30:48,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:30:48,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:30:48,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:30:48,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:30:48,218 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:30:48,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound50.c [2020-12-22 05:30:48,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa1da9f/15e8b47e782a415d8a31d4609e62ebf0/FLAGa6fce3c12 [2020-12-22 05:30:49,071 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:30:49,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound50.c [2020-12-22 05:30:49,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa1da9f/15e8b47e782a415d8a31d4609e62ebf0/FLAGa6fce3c12 [2020-12-22 05:30:49,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa1da9f/15e8b47e782a415d8a31d4609e62ebf0 [2020-12-22 05:30:49,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:30:49,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:30:49,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:49,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:30:49,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:30:49,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7982e638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49, skipping insertion in model container [2020-12-22 05:30:49,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:30:49,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:30:49,664 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-u_valuebound50.c[537,550] [2020-12-22 05:30:49,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:49,697 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:30:49,712 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-u_valuebound50.c[537,550] [2020-12-22 05:30:49,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:49,738 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:30:49,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49 WrapperNode [2020-12-22 05:30:49,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:49,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:49,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:30:49,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:30:49,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:49,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:30:49,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:30:49,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:30:49,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (1/1) ... [2020-12-22 05:30:49,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:30:49,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:30:49,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:30:49,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:30:49,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (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 05:30:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:30:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:30:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:30:49,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:30:50,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:30:50,416 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 05:30:50,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:50 BoogieIcfgContainer [2020-12-22 05:30:50,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:30:50,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:30:50,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:30:50,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:30:50,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:30:49" (1/3) ... [2020-12-22 05:30:50,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f94505f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:50, skipping insertion in model container [2020-12-22 05:30:50,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:49" (2/3) ... [2020-12-22 05:30:50,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f94505f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:50, skipping insertion in model container [2020-12-22 05:30:50,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:50" (3/3) ... [2020-12-22 05:30:50,428 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound50.c [2020-12-22 05:30:50,437 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:30:50,443 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:30:50,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:30:50,496 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:30:50,496 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:30:50,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:30:50,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:30:50,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:30:50,497 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:30:50,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:30:50,497 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:30:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-22 05:30:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:30:50,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:50,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:50,522 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 05:30:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:30:50,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:50,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677131573] [2020-12-22 05:30:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:50,772 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 05:30:50,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677131573] [2020-12-22 05:30:50,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:50,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:30:50,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633209633] [2020-12-22 05:30:50,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:30:50,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:50,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:30:50,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:30:50,799 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-22 05:30:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:50,823 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-22 05:30:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:30:50,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:30:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:50,835 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:30:50,835 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:30:50,839 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 05:30:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:30:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:30:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:30:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 05:30:50,887 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-22 05:30:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:50,887 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 05:30:50,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:30:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 05:30:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:30:50,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:50,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:50,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:30:50,890 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 05:30:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:30:50,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:50,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755816732] [2020-12-22 05:30:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:50,986 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 05:30:50,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755816732] [2020-12-22 05:30:50,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:50,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:50,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278119321] [2020-12-22 05:30:50,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:50,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:50,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:50,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:50,990 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-22 05:30:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:51,072 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-22 05:30:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:51,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:30:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:51,074 INFO L225 Difference]: With dead ends: 58 [2020-12-22 05:30:51,074 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:30:51,075 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 05:30:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:30:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-22 05:30:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:30:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 05:30:51,090 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-22 05:30:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:51,092 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 05:30:51,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 05:30:51,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:30:51,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:51,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:51,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:30:51,095 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 05:30:51,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:51,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-22 05:30:51,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:51,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983450604] [2020-12-22 05:30:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:51,331 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 05:30:51,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983450604] [2020-12-22 05:30:51,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:51,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:51,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513842855] [2020-12-22 05:30:51,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:51,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:51,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:51,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:51,334 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-22 05:30:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:51,417 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-22 05:30:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:51,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 05:30:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:51,419 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:30:51,419 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:30:51,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 05:30:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:30:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:30:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:30:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 05:30:51,428 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-22 05:30:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:51,429 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 05:30:51,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 05:30:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:30:51,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:51,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:51,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:30:51,431 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 05:30:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:51,431 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-22 05:30:51,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:51,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830365549] [2020-12-22 05:30:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:51,449 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:51,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982705429] [2020-12-22 05:30:51,450 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 05:30:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:51,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:30:51,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:51,663 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 05:30:51,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830365549] [2020-12-22 05:30:51,664 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:51,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982705429] [2020-12-22 05:30:51,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:51,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:30:51,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226831852] [2020-12-22 05:30:51,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:30:51,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:51,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:30:51,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:30:51,667 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2020-12-22 05:30:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:51,906 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-22 05:30:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:30:51,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-22 05:30:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:51,908 INFO L225 Difference]: With dead ends: 76 [2020-12-22 05:30:51,908 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:30:51,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:30:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:30:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-22 05:30:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:30:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-22 05:30:51,919 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-22 05:30:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:51,920 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-22 05:30:51,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:30:51,920 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-22 05:30:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:30:51,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:51,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:52,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:52,135 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 05:30:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:52,137 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-22 05:30:52,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:52,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255820527] [2020-12-22 05:30:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:52,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:52,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7700518] [2020-12-22 05:30:52,152 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 05:30:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:52,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:30:52,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:52,304 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 05:30:52,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255820527] [2020-12-22 05:30:52,305 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:52,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7700518] [2020-12-22 05:30:52,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:52,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:30:52,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106568098] [2020-12-22 05:30:52,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:30:52,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:52,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:30:52,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:52,308 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-12-22 05:30:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:52,427 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-22 05:30:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:30:52,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 05:30:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:52,429 INFO L225 Difference]: With dead ends: 67 [2020-12-22 05:30:52,429 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:30:52,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:30:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:30:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-22 05:30:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 05:30:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-22 05:30:52,438 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-22 05:30:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:52,438 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-22 05:30:52,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:30:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-22 05:30:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:30:52,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:52,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:52,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:52,654 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 05:30:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-22 05:30:52,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:52,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307029052] [2020-12-22 05:30:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:52,670 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:52,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211630339] [2020-12-22 05:30:52,671 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 05:30:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:52,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:30:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:53,230 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 05:30:53,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307029052] [2020-12-22 05:30:53,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:53,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211630339] [2020-12-22 05:30:53,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:53,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:30:53,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149195946] [2020-12-22 05:30:53,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:30:53,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:53,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:30:53,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:30:53,234 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-12-22 05:30:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:53,991 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-22 05:30:53,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:30:53,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-22 05:30:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:53,993 INFO L225 Difference]: With dead ends: 76 [2020-12-22 05:30:53,993 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:30:53,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:30:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:30:54,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-22 05:30:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 05:30:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-22 05:30:54,005 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2020-12-22 05:30:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:54,005 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-22 05:30:54,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:30:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-22 05:30:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:30:54,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:54,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:54,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:54,211 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 05:30:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:54,211 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-22 05:30:54,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:54,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240176160] [2020-12-22 05:30:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:54,227 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:54,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844099001] [2020-12-22 05:30:54,227 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 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 05:30:54,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:54,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:54,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-22 05:30:54,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:55,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240176160] [2020-12-22 05:30:55,390 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:55,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844099001] [2020-12-22 05:30:55,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:55,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:30:55,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906545343] [2020-12-22 05:30:55,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:30:55,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:55,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:30:55,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:30:55,393 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 15 states. [2020-12-22 05:30:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:56,677 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-12-22 05:30:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:30:56,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-12-22 05:30:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:56,679 INFO L225 Difference]: With dead ends: 88 [2020-12-22 05:30:56,679 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 05:30:56,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:30:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 05:30:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-12-22 05:30:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-22 05:30:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-12-22 05:30:56,691 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 29 [2020-12-22 05:30:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:56,691 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-12-22 05:30:56,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:30:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-12-22 05:30:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:30:56,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:56,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:56,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:56,897 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 05:30:56,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:56,898 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-22 05:30:56,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:56,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365534193] [2020-12-22 05:30:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:56,926 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:56,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873583702] [2020-12-22 05:30:56,926 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 05:30:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:58,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 05:30:58,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:59,084 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-12-22 05:30:59,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:30:59,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:30:59,236 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:30:59,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365534193] [2020-12-22 05:30:59,267 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:59,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873583702] [2020-12-22 05:30:59,267 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 05:30:59,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:59,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:30:59,268 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:30:59,268 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:30:59,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:59,500 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:30:59,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:30:59 BoogieIcfgContainer [2020-12-22 05:30:59,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:30:59,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:30:59,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:30:59,501 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:30:59,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:50" (3/4) ... [2020-12-22 05:30:59,505 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:30:59,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:30:59,507 INFO L168 Benchmark]: Toolchain (without parser) took 10071.05 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 127.8 MB in the beginning and 130.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:59,507 INFO L168 Benchmark]: CDTParser took 3.01 ms. Allocated memory is still 153.1 MB. Free memory was 126.4 MB in the beginning and 126.3 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:30:59,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.48 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 117.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:59,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.74 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:59,514 INFO L168 Benchmark]: Boogie Preprocessor took 34.12 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:59,514 INFO L168 Benchmark]: RCFGBuilder took 599.04 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 130.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:59,515 INFO L168 Benchmark]: TraceAbstraction took 9080.08 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 130.1 MB in the beginning and 131.1 MB in the end (delta: -951.6 kB). Peak memory consumption was 101.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:59,516 INFO L168 Benchmark]: Witness Printer took 4.65 ms. Allocated memory is still 184.5 MB. Free memory was 131.1 MB in the beginning and 130.5 MB in the end (delta: 517.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:30:59,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.01 ms. Allocated memory is still 153.1 MB. Free memory was 126.4 MB in the beginning and 126.3 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.48 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 117.8 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 43.74 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.12 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 599.04 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 130.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9080.08 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 130.1 MB in the beginning and 131.1 MB in the end (delta: -951.6 kB). Peak memory consumption was 101.3 MB. Max. memory is 8.0 GB. * Witness Printer took 4.65 ms. Allocated memory is still 184.5 MB. Free memory was 131.1 MB in the beginning and 130.5 MB in the end (delta: 517.4 kB). 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: [L23] unsigned int A, B; [L24] unsigned int r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 208 SDtfs, 788 SDslu, 335 SDs, 0 SdLazy, 548 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 26025 SizeOfPredicates, 46 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 0/25 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...