/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/bresenham-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:56:48,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:56:48,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:56:48,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:56:48,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:56:48,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:56:48,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:56:48,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:56:48,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:56:48,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:56:48,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:56:48,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:56:48,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:56:48,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:56:48,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:56:48,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:56:48,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:56:48,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:56:48,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:56:48,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:56:48,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:56:48,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:56:48,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:56:48,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:56:48,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:56:48,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:56:48,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:56:48,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:56:48,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:56:48,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:56:48,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:56:48,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:56:48,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:56:48,813 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:56:48,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:56:48,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:56:48,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:56:48,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:56:48,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:56:48,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:56:48,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:56:48,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:56:48,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:56:48,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:56:48,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:56:48,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:56:48,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:56:48,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:56:48,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:56:48,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:56:48,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:56:48,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:56:48,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:56:48,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:56:48,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:56:49,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:56:49,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:56:49,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:56:49,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:56:49,273 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:56:49,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2020-12-22 04:56:49,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1661038d/12955a93f0be417a8f27adc162c14b7e/FLAG001234f09 [2020-12-22 04:56:50,002 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:56:50,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2020-12-22 04:56:50,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1661038d/12955a93f0be417a8f27adc162c14b7e/FLAG001234f09 [2020-12-22 04:56:50,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1661038d/12955a93f0be417a8f27adc162c14b7e [2020-12-22 04:56:50,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:56:50,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:56:50,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:56:50,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:56:50,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:56:50,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38876744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50, skipping insertion in model container [2020-12-22 04:56:50,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:56:50,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:56:50,523 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/bresenham-ll_unwindbound10.c[597,610] [2020-12-22 04:56:50,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:56:50,557 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:56:50,575 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/bresenham-ll_unwindbound10.c[597,610] [2020-12-22 04:56:50,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:56:50,634 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:56:50,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50 WrapperNode [2020-12-22 04:56:50,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:56:50,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:56:50,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:56:50,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:56:50,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:56:50,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:56:50,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:56:50,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:56:50,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (1/1) ... [2020-12-22 04:56:50,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:56:50,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:56:50,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:56:50,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:56:50,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (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 04:56:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:56:50,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:56:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:56:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:56:51,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:56:51,103 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 04:56:51,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:56:51 BoogieIcfgContainer [2020-12-22 04:56:51,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:56:51,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:56:51,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:56:51,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:56:51,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:56:50" (1/3) ... [2020-12-22 04:56:51,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fed482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:56:51, skipping insertion in model container [2020-12-22 04:56:51,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:56:50" (2/3) ... [2020-12-22 04:56:51,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fed482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:56:51, skipping insertion in model container [2020-12-22 04:56:51,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:56:51" (3/3) ... [2020-12-22 04:56:51,133 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2020-12-22 04:56:51,152 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:56:51,164 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 04:56:51,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 04:56:51,239 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:56:51,239 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:56:51,239 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:56:51,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:56:51,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:56:51,240 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:56:51,240 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:56:51,240 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:56:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-22 04:56:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:56:51,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:51,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:56:51,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:51,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash 890461031, now seen corresponding path program 1 times [2020-12-22 04:56:51,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:51,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707221626] [2020-12-22 04:56:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:51,444 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 04:56:51,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707221626] [2020-12-22 04:56:51,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:56:51,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:56:51,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225373150] [2020-12-22 04:56:51,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:56:51,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:51,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:56:51,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:56:51,470 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-22 04:56:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:51,488 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-12-22 04:56:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:56:51,489 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 04:56:51,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:51,498 INFO L225 Difference]: With dead ends: 34 [2020-12-22 04:56:51,498 INFO L226 Difference]: Without dead ends: 14 [2020-12-22 04:56:51,502 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 04:56:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-22 04:56:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-22 04:56:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-22 04:56:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-22 04:56:51,539 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2020-12-22 04:56:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:51,539 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-22 04:56:51,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:56:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-22 04:56:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:56:51,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:51,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:56:51,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:56:51,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:51,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:51,542 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 04:56:51,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:51,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204684830] [2020-12-22 04:56:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:51,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:51,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89976256] [2020-12-22 04:56:51,562 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 04:56:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:51,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 04:56:51,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:51,750 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 04:56:51,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204684830] [2020-12-22 04:56:51,751 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:51,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89976256] [2020-12-22 04:56:51,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:56:51,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:56:51,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371829712] [2020-12-22 04:56:51,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:56:51,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:56:51,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:56:51,755 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-12-22 04:56:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:51,841 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-12-22 04:56:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:56:51,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 04:56:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:51,842 INFO L225 Difference]: With dead ends: 30 [2020-12-22 04:56:51,843 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 04:56:51,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 04:56:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 04:56:51,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-12-22 04:56:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:56:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-22 04:56:51,849 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2020-12-22 04:56:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:51,850 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-22 04:56:51,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:56:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-22 04:56:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:56:51,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:51,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:52,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:56:52,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:52,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:52,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1545533000, now seen corresponding path program 1 times [2020-12-22 04:56:52,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:52,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120648204] [2020-12-22 04:56:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:52,091 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:52,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968580728] [2020-12-22 04:56:52,092 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 04:56:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:52,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 04:56:52,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:56:52,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120648204] [2020-12-22 04:56:52,429 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:52,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968580728] [2020-12-22 04:56:52,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:52,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:56:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474563847] [2020-12-22 04:56:52,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:56:52,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:52,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:56:52,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:56:52,432 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 7 states. [2020-12-22 04:56:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:52,579 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-12-22 04:56:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:56:52,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 04:56:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:52,581 INFO L225 Difference]: With dead ends: 35 [2020-12-22 04:56:52,581 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 04:56:52,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:56:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 04:56:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2020-12-22 04:56:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 04:56:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-22 04:56:52,587 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-12-22 04:56:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:52,588 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-22 04:56:52,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:56:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-22 04:56:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:56:52,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:52,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:52,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:52,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:52,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1602791302, now seen corresponding path program 1 times [2020-12-22 04:56:52,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:52,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973248782] [2020-12-22 04:56:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:52,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:52,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648177325] [2020-12-22 04:56:52,825 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 04:56:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:56:52,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:56:52,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973248782] [2020-12-22 04:56:52,989 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:52,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648177325] [2020-12-22 04:56:52,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:52,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:56:52,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203188807] [2020-12-22 04:56:52,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:56:52,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:52,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:56:52,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:56:52,991 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-12-22 04:56:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:53,125 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-12-22 04:56:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:56:53,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 04:56:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:53,126 INFO L225 Difference]: With dead ends: 39 [2020-12-22 04:56:53,126 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 04:56:53,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:56:53,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 04:56:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-12-22 04:56:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 04:56:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-22 04:56:53,134 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2020-12-22 04:56:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:53,134 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-22 04:56:53,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:56:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-22 04:56:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:56:53,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:53,135 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:53,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:53,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:53,352 INFO L82 PathProgramCache]: Analyzing trace with hash -666919436, now seen corresponding path program 1 times [2020-12-22 04:56:53,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:53,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329964552] [2020-12-22 04:56:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:53,367 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:53,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459555860] [2020-12-22 04:56:53,367 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 04:56:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:53,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 04:56:53,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:53,453 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 04:56:53,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329964552] [2020-12-22 04:56:53,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:53,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459555860] [2020-12-22 04:56:53,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:53,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 04:56:53,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932077440] [2020-12-22 04:56:53,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:56:53,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:53,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:56:53,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:56:53,457 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-12-22 04:56:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:53,482 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-12-22 04:56:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:56:53,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 04:56:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:53,484 INFO L225 Difference]: With dead ends: 32 [2020-12-22 04:56:53,484 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 04:56:53,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:56:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 04:56:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 04:56:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 04:56:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-12-22 04:56:53,490 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2020-12-22 04:56:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:53,490 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-12-22 04:56:53,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:56:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-22 04:56:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:56:53,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:53,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:53,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:53,706 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:53,707 INFO L82 PathProgramCache]: Analyzing trace with hash -919296115, now seen corresponding path program 1 times [2020-12-22 04:56:53,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:53,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572950742] [2020-12-22 04:56:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:53,725 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:53,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062223162] [2020-12-22 04:56:53,730 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 04:56:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:53,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 04:56:53,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:54,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:56:54,062 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 04:56:54,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572950742] [2020-12-22 04:56:54,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:54,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062223162] [2020-12-22 04:56:54,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:54,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:56:54,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810323105] [2020-12-22 04:56:54,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:56:54,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:54,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:56:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:56:54,066 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 11 states. [2020-12-22 04:56:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:54,315 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-12-22 04:56:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 04:56:54,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-12-22 04:56:54,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:54,316 INFO L225 Difference]: With dead ends: 39 [2020-12-22 04:56:54,317 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 04:56:54,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:56:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 04:56:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2020-12-22 04:56:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 04:56:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-22 04:56:54,323 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-12-22 04:56:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:54,323 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-22 04:56:54,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:56:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-22 04:56:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:56:54,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:54,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:56:54,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 04:56:54,540 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:54,541 INFO L82 PathProgramCache]: Analyzing trace with hash -443375322, now seen corresponding path program 2 times [2020-12-22 04:56:54,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:54,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587373240] [2020-12-22 04:56:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:54,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:54,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192526986] [2020-12-22 04:56:54,555 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 04:56:54,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:56:54,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:56:54,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 04:56:54,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:56:54,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587373240] [2020-12-22 04:56:54,905 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:54,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192526986] [2020-12-22 04:56:54,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:56:54,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:56:54,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359755453] [2020-12-22 04:56:54,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:56:54,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:56:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:56:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:56:54,907 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 11 states. [2020-12-22 04:56:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:56:55,191 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-12-22 04:56:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:56:55,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-12-22 04:56:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:56:55,192 INFO L225 Difference]: With dead ends: 46 [2020-12-22 04:56:55,193 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 04:56:55,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-12-22 04:56:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 04:56:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-12-22 04:56:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 04:56:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-12-22 04:56:55,200 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2020-12-22 04:56:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:56:55,201 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-12-22 04:56:55,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:56:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-12-22 04:56:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:56:55,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:56:55,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 04:56:55,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:55,416 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:56:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:56:55,418 INFO L82 PathProgramCache]: Analyzing trace with hash -500633624, now seen corresponding path program 1 times [2020-12-22 04:56:55,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:56:55,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039162912] [2020-12-22 04:56:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:56:55,430 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:56:55,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418646968] [2020-12-22 04:56:55,431 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 04:56:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:56:55,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-22 04:56:55,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:56:55,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039162912] [2020-12-22 04:56:55,758 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:56:55,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418646968] [2020-12-22 04:56:55,759 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 04:56:55,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:56:55,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 04:56:55,759 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 04:56:55,759 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:56:55,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:56:55,999 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 04:56:55,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:56:55 BoogieIcfgContainer [2020-12-22 04:56:56,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:56:56,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:56:56,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:56:56,001 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:56:56,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:56:51" (3/4) ... [2020-12-22 04:56:56,005 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 04:56:56,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:56:56,008 INFO L168 Benchmark]: Toolchain (without parser) took 5672.03 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 107.5 MB in the beginning and 93.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:56,008 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:56:56,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.50 ms. Allocated memory is still 151.0 MB. Free memory was 107.5 MB in the beginning and 97.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:56,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.93 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 95.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:56,011 INFO L168 Benchmark]: Boogie Preprocessor took 66.22 ms. Allocated memory is still 151.0 MB. Free memory was 95.9 MB in the beginning and 134.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:56,011 INFO L168 Benchmark]: RCFGBuilder took 368.22 ms. Allocated memory is still 151.0 MB. Free memory was 134.0 MB in the beginning and 119.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:56,012 INFO L168 Benchmark]: TraceAbstraction took 4886.73 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 119.3 MB in the beginning and 93.6 MB in the end (delta: 25.7 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2020-12-22 04:56:56,013 INFO L168 Benchmark]: Witness Printer took 5.14 ms. Allocated memory is still 185.6 MB. Free memory is still 93.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:56:56,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.50 ms. Allocated memory is still 151.0 MB. Free memory was 107.5 MB in the beginning and 97.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.93 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 95.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.22 ms. Allocated memory is still 151.0 MB. Free memory was 95.9 MB in the beginning and 134.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 368.22 ms. Allocated memory is still 151.0 MB. Free memory was 134.0 MB in the beginning and 119.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4886.73 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 119.3 MB in the beginning and 93.6 MB in the end (delta: 25.7 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * Witness Printer took 5.14 ms. Allocated memory is still 185.6 MB. Free memory is still 93.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: 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: [L21] int counter = 0; [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 [L31] EXPR counter++ [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND FALSE !(!(cond)) [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ [L31] EXPR counter++ [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND FALSE !(!(cond)) [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ [L31] EXPR counter++ [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y [L14] COND TRUE !(cond) [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 94 SDslu, 254 SDs, 0 SdLazy, 394 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 41 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 11548 SizeOfPredicates, 66 NumberOfNonLiveVariables, 518 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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...