/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/egcd3-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:53:24,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:53:24,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:53:24,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 04:53:24,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:53:24,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:53:24,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:53:24,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:53:24,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:53:24,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:53:24,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:53:24,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:53:24,932 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:53:24,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:53:24,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:53:24,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:53:24,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:53:24,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:53:24,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:53:24,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:53:24,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:53:24,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:53:24,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:53:24,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:53:24,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:53:24,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:53:24,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:53:24,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:53:24,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:53:24,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:53:24,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:53:24,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:53:24,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:53:24,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:53:25,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:53:25,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:53:25,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:53:25,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:53:25,325 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:53:25,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd3-ll.c [2020-12-22 04:53:25,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0aac5d1/5e938df4315c489aab9a718adb312d14/FLAGd1bae76de [2020-12-22 04:53:25,988 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:53:25,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd3-ll.c [2020-12-22 04:53:25,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0aac5d1/5e938df4315c489aab9a718adb312d14/FLAGd1bae76de [2020-12-22 04:53:26,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0aac5d1/5e938df4315c489aab9a718adb312d14 [2020-12-22 04:53:26,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:53:26,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:53:26,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:53:26,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:53:26,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:53:26,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4397c90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26, skipping insertion in model container [2020-12-22 04:53:26,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:53:26,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:53:26,610 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/egcd3-ll.c[490,503] [2020-12-22 04:53:26,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:53:26,640 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:53:26,654 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/egcd3-ll.c[490,503] [2020-12-22 04:53:26,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:53:26,681 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:53:26,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26 WrapperNode [2020-12-22 04:53:26,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:53:26,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:53:26,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:53:26,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:53:26,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:53:26,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:53:26,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:53:26,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:53:26,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (1/1) ... [2020-12-22 04:53:26,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:53:26,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:53:26,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:53:26,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:53:26,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (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 04:53:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:53:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:53:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:53:26,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:53:27,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:53:27,234 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-22 04:53:27,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:53:27 BoogieIcfgContainer [2020-12-22 04:53:27,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:53:27,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:53:27,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:53:27,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:53:27,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:53:26" (1/3) ... [2020-12-22 04:53:27,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a068e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:53:27, skipping insertion in model container [2020-12-22 04:53:27,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:26" (2/3) ... [2020-12-22 04:53:27,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a068e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:53:27, skipping insertion in model container [2020-12-22 04:53:27,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:53:27" (3/3) ... [2020-12-22 04:53:27,245 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll.c [2020-12-22 04:53:27,253 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:53:27,259 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 04:53:27,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 04:53:27,311 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:53:27,311 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:53:27,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:53:27,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:53:27,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:53:27,312 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:53:27,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:53:27,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:53:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-22 04:53:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 04:53:27,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:27,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:27,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1236053721, now seen corresponding path program 1 times [2020-12-22 04:53:27,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:27,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001678201] [2020-12-22 04:53:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:27,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001678201] [2020-12-22 04:53:27,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:27,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:53:27,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331192857] [2020-12-22 04:53:27,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:53:27,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:27,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:53:27,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:53:27,564 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-22 04:53:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:27,585 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2020-12-22 04:53:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:53:27,587 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 04:53:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:27,596 INFO L225 Difference]: With dead ends: 71 [2020-12-22 04:53:27,596 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 04:53:27,600 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 04:53:27,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 04:53:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 04:53:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 04:53:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-22 04:53:27,640 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2020-12-22 04:53:27,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:27,640 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-22 04:53:27,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:53:27,640 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-22 04:53:27,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:53:27,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:27,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:27,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:53:27,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:27,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1503549271, now seen corresponding path program 1 times [2020-12-22 04:53:27,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:27,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20665649] [2020-12-22 04:53:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:27,673 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:27,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147363826] [2020-12-22 04:53:27,673 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 04:53:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:27,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 04:53:27,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20665649] [2020-12-22 04:53:27,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147363826] [2020-12-22 04:53:27,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:27,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:53:27,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638554588] [2020-12-22 04:53:27,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:53:27,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:53:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:53:27,884 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2020-12-22 04:53:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:28,002 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-22 04:53:28,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:53:28,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 04:53:28,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:28,004 INFO L225 Difference]: With dead ends: 60 [2020-12-22 04:53:28,004 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 04:53:28,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:53:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 04:53:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2020-12-22 04:53:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 04:53:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 04:53:28,016 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 11 [2020-12-22 04:53:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:28,016 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 04:53:28,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:53:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 04:53:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:53:28,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:28,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:28,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:53:28,231 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:28,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1815125850, now seen corresponding path program 1 times [2020-12-22 04:53:28,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:28,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054667767] [2020-12-22 04:53:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:28,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:28,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721935644] [2020-12-22 04:53:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:28,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:53:28,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:28,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054667767] [2020-12-22 04:53:28,495 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:28,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721935644] [2020-12-22 04:53:28,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:28,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:53:28,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138189978] [2020-12-22 04:53:28,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:53:28,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:53:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:53:28,498 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2020-12-22 04:53:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:28,637 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-22 04:53:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:53:28,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 04:53:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:28,640 INFO L225 Difference]: With dead ends: 56 [2020-12-22 04:53:28,640 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 04:53:28,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 04:53:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-12-22 04:53:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 04:53:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-22 04:53:28,653 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 13 [2020-12-22 04:53:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:28,653 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-22 04:53:28,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:53:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-22 04:53:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:53:28,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:28,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:28,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:28,871 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:28,872 INFO L82 PathProgramCache]: Analyzing trace with hash -579062807, now seen corresponding path program 1 times [2020-12-22 04:53:28,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:28,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252867214] [2020-12-22 04:53:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:28,910 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:28,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508481855] [2020-12-22 04:53:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:29,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 04:53:29,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:29,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252867214] [2020-12-22 04:53:29,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:29,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508481855] [2020-12-22 04:53:29,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:29,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 04:53:29,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829311912] [2020-12-22 04:53:29,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:53:29,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:29,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:53:29,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:29,126 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 8 states. [2020-12-22 04:53:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:29,340 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-12-22 04:53:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:53:29,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-22 04:53:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:29,342 INFO L225 Difference]: With dead ends: 54 [2020-12-22 04:53:29,343 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 04:53:29,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 04:53:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-12-22 04:53:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 04:53:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-12-22 04:53:29,353 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 15 [2020-12-22 04:53:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:29,354 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-12-22 04:53:29,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:53:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-12-22 04:53:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 04:53:29,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:29,355 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:29,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:29,569 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:29,571 INFO L82 PathProgramCache]: Analyzing trace with hash -977126190, now seen corresponding path program 1 times [2020-12-22 04:53:29,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:29,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390943280] [2020-12-22 04:53:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:29,599 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:29,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973324553] [2020-12-22 04:53:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:29,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 04:53:29,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:29,712 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 04:53:29,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390943280] [2020-12-22 04:53:29,712 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:29,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973324553] [2020-12-22 04:53:29,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:29,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:53:29,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235738039] [2020-12-22 04:53:29,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:53:29,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:53:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:53:29,715 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-12-22 04:53:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:29,940 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2020-12-22 04:53:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:53:29,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 04:53:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:29,942 INFO L225 Difference]: With dead ends: 136 [2020-12-22 04:53:29,943 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 04:53:29,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 04:53:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 71. [2020-12-22 04:53:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 04:53:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2020-12-22 04:53:29,960 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 16 [2020-12-22 04:53:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:29,960 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2020-12-22 04:53:29,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:53:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2020-12-22 04:53:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:53:29,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:29,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:30,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:30,175 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:30,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:30,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1866548172, now seen corresponding path program 1 times [2020-12-22 04:53:30,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:30,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093106781] [2020-12-22 04:53:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:30,195 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:30,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118523427] [2020-12-22 04:53:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:30,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 04:53:30,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:30,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093106781] [2020-12-22 04:53:30,353 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:30,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118523427] [2020-12-22 04:53:30,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:30,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 04:53:30,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839417720] [2020-12-22 04:53:30,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:53:30,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:53:30,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:30,368 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand 8 states. [2020-12-22 04:53:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:30,598 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2020-12-22 04:53:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:53:30,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 04:53:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:30,600 INFO L225 Difference]: With dead ends: 91 [2020-12-22 04:53:30,600 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 04:53:30,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 04:53:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2020-12-22 04:53:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-22 04:53:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-12-22 04:53:30,616 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 17 [2020-12-22 04:53:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:30,616 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-12-22 04:53:30,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:53:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-12-22 04:53:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:53:30,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:30,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:30,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 04:53:30,832 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1566281359, now seen corresponding path program 1 times [2020-12-22 04:53:30,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:30,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263554485] [2020-12-22 04:53:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:30,849 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:30,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505213007] [2020-12-22 04:53:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:30,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:53:30,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:30,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263554485] [2020-12-22 04:53:30,998 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:30,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505213007] [2020-12-22 04:53:30,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:30,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:53:30,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617996982] [2020-12-22 04:53:31,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:53:31,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:31,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:53:31,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:53:31,001 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 7 states. [2020-12-22 04:53:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:31,172 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2020-12-22 04:53:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:53:31,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 04:53:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:31,174 INFO L225 Difference]: With dead ends: 131 [2020-12-22 04:53:31,175 INFO L226 Difference]: Without dead ends: 129 [2020-12-22 04:53:31,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:53:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-22 04:53:31,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2020-12-22 04:53:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 04:53:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2020-12-22 04:53:31,193 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 18 [2020-12-22 04:53:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:31,193 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2020-12-22 04:53:31,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:53:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2020-12-22 04:53:31,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 04:53:31,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:31,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:31,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:31,409 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:31,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:31,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1543378865, now seen corresponding path program 1 times [2020-12-22 04:53:31,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:31,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911938720] [2020-12-22 04:53:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:31,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:31,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608342291] [2020-12-22 04:53:31,425 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 04:53:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:31,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 04:53:31,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:31,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911938720] [2020-12-22 04:53:31,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:31,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608342291] [2020-12-22 04:53:31,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:31,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:53:31,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892615138] [2020-12-22 04:53:31,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:53:31,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:31,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:53:31,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:53:31,532 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand 5 states. [2020-12-22 04:53:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:31,653 INFO L93 Difference]: Finished difference Result 222 states and 283 transitions. [2020-12-22 04:53:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:53:31,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 04:53:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:31,656 INFO L225 Difference]: With dead ends: 222 [2020-12-22 04:53:31,659 INFO L226 Difference]: Without dead ends: 220 [2020-12-22 04:53:31,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-22 04:53:31,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2020-12-22 04:53:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-22 04:53:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2020-12-22 04:53:31,691 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 19 [2020-12-22 04:53:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:31,692 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2020-12-22 04:53:31,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:53:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2020-12-22 04:53:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 04:53:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:31,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:31,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:31,907 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1957989266, now seen corresponding path program 1 times [2020-12-22 04:53:31,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:31,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081939384] [2020-12-22 04:53:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:31,931 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:31,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454908762] [2020-12-22 04:53:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:31,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 04:53:31,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:32,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081939384] [2020-12-22 04:53:32,173 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:32,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454908762] [2020-12-22 04:53:32,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:32,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 04:53:32,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902769558] [2020-12-22 04:53:32,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:53:32,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:53:32,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:53:32,181 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand 10 states. [2020-12-22 04:53:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:32,698 INFO L93 Difference]: Finished difference Result 175 states and 210 transitions. [2020-12-22 04:53:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 04:53:32,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-22 04:53:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:32,700 INFO L225 Difference]: With dead ends: 175 [2020-12-22 04:53:32,700 INFO L226 Difference]: Without dead ends: 173 [2020-12-22 04:53:32,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-12-22 04:53:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-22 04:53:32,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2020-12-22 04:53:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-22 04:53:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2020-12-22 04:53:32,723 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 20 [2020-12-22 04:53:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:32,723 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2020-12-22 04:53:32,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:53:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2020-12-22 04:53:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 04:53:32,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:32,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:32,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 04:53:32,939 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:32,940 INFO L82 PathProgramCache]: Analyzing trace with hash 432166197, now seen corresponding path program 1 times [2020-12-22 04:53:32,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:32,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815961310] [2020-12-22 04:53:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:32,953 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:32,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729573403] [2020-12-22 04:53:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:33,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 04:53:33,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:33,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815961310] [2020-12-22 04:53:33,109 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:33,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729573403] [2020-12-22 04:53:33,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:33,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:53:33,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195364531] [2020-12-22 04:53:33,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:53:33,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:33,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:53:33,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:33,111 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand 9 states. [2020-12-22 04:53:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:33,414 INFO L93 Difference]: Finished difference Result 273 states and 324 transitions. [2020-12-22 04:53:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:53:33,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 04:53:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:33,417 INFO L225 Difference]: With dead ends: 273 [2020-12-22 04:53:33,418 INFO L226 Difference]: Without dead ends: 271 [2020-12-22 04:53:33,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-12-22 04:53:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-12-22 04:53:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 194. [2020-12-22 04:53:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-12-22 04:53:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 241 transitions. [2020-12-22 04:53:33,444 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 241 transitions. Word has length 22 [2020-12-22 04:53:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:33,445 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 241 transitions. [2020-12-22 04:53:33,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:53:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 241 transitions. [2020-12-22 04:53:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 04:53:33,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:33,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:33,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:33,663 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:33,664 INFO L82 PathProgramCache]: Analyzing trace with hash 50113094, now seen corresponding path program 2 times [2020-12-22 04:53:33,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:33,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689379808] [2020-12-22 04:53:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:33,676 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:33,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080101339] [2020-12-22 04:53:33,676 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:33,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:33,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:33,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 04:53:33,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:33,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689379808] [2020-12-22 04:53:33,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:33,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080101339] [2020-12-22 04:53:33,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:33,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:53:33,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129317181] [2020-12-22 04:53:33,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:53:33,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:53:33,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:53:33,782 INFO L87 Difference]: Start difference. First operand 194 states and 241 transitions. Second operand 5 states. [2020-12-22 04:53:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:33,886 INFO L93 Difference]: Finished difference Result 287 states and 351 transitions. [2020-12-22 04:53:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:53:33,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-22 04:53:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:33,888 INFO L225 Difference]: With dead ends: 287 [2020-12-22 04:53:33,889 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 04:53:33,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:53:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 04:53:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 151. [2020-12-22 04:53:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 04:53:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2020-12-22 04:53:33,911 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 23 [2020-12-22 04:53:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:33,912 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2020-12-22 04:53:33,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:53:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2020-12-22 04:53:33,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 04:53:33,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:33,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:34,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:34,133 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:34,134 INFO L82 PathProgramCache]: Analyzing trace with hash -710666819, now seen corresponding path program 1 times [2020-12-22 04:53:34,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:34,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672326496] [2020-12-22 04:53:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:34,146 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:34,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3577622] [2020-12-22 04:53:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:34,226 WARN L261 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-22 04:53:34,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:34,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672326496] [2020-12-22 04:53:34,678 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:34,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3577622] [2020-12-22 04:53:34,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:34,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 04:53:34,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127646655] [2020-12-22 04:53:34,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 04:53:34,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:34,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 04:53:34,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-12-22 04:53:34,680 INFO L87 Difference]: Start difference. First operand 151 states and 179 transitions. Second operand 14 states. [2020-12-22 04:53:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:35,443 INFO L93 Difference]: Finished difference Result 278 states and 329 transitions. [2020-12-22 04:53:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 04:53:35,444 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-12-22 04:53:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:35,445 INFO L225 Difference]: With dead ends: 278 [2020-12-22 04:53:35,445 INFO L226 Difference]: Without dead ends: 194 [2020-12-22 04:53:35,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-12-22 04:53:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-12-22 04:53:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2020-12-22 04:53:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-22 04:53:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2020-12-22 04:53:35,467 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 28 [2020-12-22 04:53:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:35,467 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2020-12-22 04:53:35,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 04:53:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2020-12-22 04:53:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 04:53:35,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:35,468 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] [2020-12-22 04:53:35,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 04:53:35,682 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:35,683 INFO L82 PathProgramCache]: Analyzing trace with hash -584499604, now seen corresponding path program 1 times [2020-12-22 04:53:35,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:35,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785452260] [2020-12-22 04:53:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:35,694 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:35,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651564241] [2020-12-22 04:53:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:35,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 04:53:35,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:35,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785452260] [2020-12-22 04:53:35,855 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:35,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651564241] [2020-12-22 04:53:35,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:35,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:53:35,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312334867] [2020-12-22 04:53:35,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:53:35,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:35,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:53:35,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:35,857 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand 9 states. [2020-12-22 04:53:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:36,253 INFO L93 Difference]: Finished difference Result 207 states and 240 transitions. [2020-12-22 04:53:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 04:53:36,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-22 04:53:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:36,257 INFO L225 Difference]: With dead ends: 207 [2020-12-22 04:53:36,257 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 04:53:36,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:53:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 04:53:36,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 177. [2020-12-22 04:53:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-22 04:53:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 208 transitions. [2020-12-22 04:53:36,281 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 208 transitions. Word has length 28 [2020-12-22 04:53:36,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:36,282 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 208 transitions. [2020-12-22 04:53:36,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:53:36,282 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 208 transitions. [2020-12-22 04:53:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:53:36,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:36,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:36,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 04:53:36,499 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:36,500 INFO L82 PathProgramCache]: Analyzing trace with hash 878393524, now seen corresponding path program 2 times [2020-12-22 04:53:36,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:36,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383773864] [2020-12-22 04:53:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:36,511 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:36,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819696169] [2020-12-22 04:53:36,512 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:36,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:36,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:36,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 04:53:36,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:36,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383773864] [2020-12-22 04:53:36,660 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:36,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819696169] [2020-12-22 04:53:36,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:36,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:53:36,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724685688] [2020-12-22 04:53:36,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:53:36,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:36,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:53:36,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:36,666 INFO L87 Difference]: Start difference. First operand 177 states and 208 transitions. Second operand 8 states. [2020-12-22 04:53:37,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:37,054 INFO L93 Difference]: Finished difference Result 398 states and 467 transitions. [2020-12-22 04:53:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 04:53:37,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 04:53:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:37,057 INFO L225 Difference]: With dead ends: 398 [2020-12-22 04:53:37,057 INFO L226 Difference]: Without dead ends: 394 [2020-12-22 04:53:37,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-22 04:53:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-22 04:53:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 217. [2020-12-22 04:53:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 04:53:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 261 transitions. [2020-12-22 04:53:37,088 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 261 transitions. Word has length 33 [2020-12-22 04:53:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:37,088 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 261 transitions. [2020-12-22 04:53:37,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:53:37,088 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 261 transitions. [2020-12-22 04:53:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:53:37,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:37,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:37,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 04:53:37,303 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:37,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1004560739, now seen corresponding path program 1 times [2020-12-22 04:53:37,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:37,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471279525] [2020-12-22 04:53:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:37,315 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:37,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941482575] [2020-12-22 04:53:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:37,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 04:53:37,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:37,501 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 04:53:37,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471279525] [2020-12-22 04:53:37,501 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:37,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941482575] [2020-12-22 04:53:37,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:37,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 04:53:37,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236011556] [2020-12-22 04:53:37,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:53:37,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:37,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:53:37,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:53:37,503 INFO L87 Difference]: Start difference. First operand 217 states and 261 transitions. Second operand 10 states. [2020-12-22 04:53:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:37,982 INFO L93 Difference]: Finished difference Result 359 states and 424 transitions. [2020-12-22 04:53:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 04:53:37,983 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-22 04:53:37,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:37,985 INFO L225 Difference]: With dead ends: 359 [2020-12-22 04:53:37,985 INFO L226 Difference]: Without dead ends: 357 [2020-12-22 04:53:37,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-12-22 04:53:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-12-22 04:53:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 257. [2020-12-22 04:53:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-22 04:53:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2020-12-22 04:53:38,022 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 33 [2020-12-22 04:53:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:38,022 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2020-12-22 04:53:38,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:53:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2020-12-22 04:53:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 04:53:38,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:38,023 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:38,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:38,239 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash -741882838, now seen corresponding path program 1 times [2020-12-22 04:53:38,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:38,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758917561] [2020-12-22 04:53:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:38,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:38,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256758631] [2020-12-22 04:53:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:38,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 04:53:38,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 04:53:38,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758917561] [2020-12-22 04:53:38,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:38,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256758631] [2020-12-22 04:53:38,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:38,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:53:38,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488180645] [2020-12-22 04:53:38,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:53:38,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:38,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:53:38,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:53:38,353 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand 5 states. [2020-12-22 04:53:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:38,432 INFO L93 Difference]: Finished difference Result 450 states and 548 transitions. [2020-12-22 04:53:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:53:38,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-22 04:53:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:38,434 INFO L225 Difference]: With dead ends: 450 [2020-12-22 04:53:38,434 INFO L226 Difference]: Without dead ends: 283 [2020-12-22 04:53:38,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 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 04:53:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-12-22 04:53:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 257. [2020-12-22 04:53:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-22 04:53:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 308 transitions. [2020-12-22 04:53:38,471 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 308 transitions. Word has length 34 [2020-12-22 04:53:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:38,471 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 308 transitions. [2020-12-22 04:53:38,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:53:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 308 transitions. [2020-12-22 04:53:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 04:53:38,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:38,472 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:38,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 04:53:38,686 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:38,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:38,686 INFO L82 PathProgramCache]: Analyzing trace with hash -835022368, now seen corresponding path program 2 times [2020-12-22 04:53:38,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:38,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359226810] [2020-12-22 04:53:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:38,695 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:38,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221816373] [2020-12-22 04:53:38,696 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:38,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 04:53:38,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:38,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 04:53:38,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 04:53:38,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359226810] [2020-12-22 04:53:38,803 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:38,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221816373] [2020-12-22 04:53:38,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:38,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:53:38,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475333424] [2020-12-22 04:53:38,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:53:38,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:38,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:53:38,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:53:38,805 INFO L87 Difference]: Start difference. First operand 257 states and 308 transitions. Second operand 5 states. [2020-12-22 04:53:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:38,941 INFO L93 Difference]: Finished difference Result 297 states and 356 transitions. [2020-12-22 04:53:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:53:38,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-22 04:53:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:38,944 INFO L225 Difference]: With dead ends: 297 [2020-12-22 04:53:38,944 INFO L226 Difference]: Without dead ends: 295 [2020-12-22 04:53:38,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:53:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-22 04:53:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 284. [2020-12-22 04:53:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-22 04:53:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 341 transitions. [2020-12-22 04:53:38,990 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 341 transitions. Word has length 34 [2020-12-22 04:53:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:38,990 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 341 transitions. [2020-12-22 04:53:38,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:53:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 341 transitions. [2020-12-22 04:53:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 04:53:38,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:38,991 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:39,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 04:53:39,206 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1985668623, now seen corresponding path program 1 times [2020-12-22 04:53:39,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:39,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146118265] [2020-12-22 04:53:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:39,216 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:39,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270953296] [2020-12-22 04:53:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:39,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 04:53:39,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146118265] [2020-12-22 04:53:39,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270953296] [2020-12-22 04:53:39,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:39,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 04:53:39,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340966736] [2020-12-22 04:53:39,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 04:53:39,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 04:53:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:53:39,636 INFO L87 Difference]: Start difference. First operand 284 states and 341 transitions. Second operand 15 states. [2020-12-22 04:53:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:42,127 INFO L93 Difference]: Finished difference Result 446 states and 515 transitions. [2020-12-22 04:53:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-22 04:53:42,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-12-22 04:53:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:42,130 INFO L225 Difference]: With dead ends: 446 [2020-12-22 04:53:42,130 INFO L226 Difference]: Without dead ends: 444 [2020-12-22 04:53:42,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 04:53:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-12-22 04:53:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 378. [2020-12-22 04:53:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-12-22 04:53:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 466 transitions. [2020-12-22 04:53:42,187 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 466 transitions. Word has length 35 [2020-12-22 04:53:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:42,187 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 466 transitions. [2020-12-22 04:53:42,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 04:53:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 466 transitions. [2020-12-22 04:53:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 04:53:42,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:42,188 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:42,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 04:53:42,403 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:42,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1261910412, now seen corresponding path program 1 times [2020-12-22 04:53:42,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:42,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242621266] [2020-12-22 04:53:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:42,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:42,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45967923] [2020-12-22 04:53:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:42,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 83 conjunts are in the unsatisfiable core [2020-12-22 04:53:42,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:43,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242621266] [2020-12-22 04:53:43,184 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:43,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45967923] [2020-12-22 04:53:43,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:43,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 04:53:43,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798391831] [2020-12-22 04:53:43,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 04:53:43,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:43,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 04:53:43,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-12-22 04:53:43,186 INFO L87 Difference]: Start difference. First operand 378 states and 466 transitions. Second operand 18 states. [2020-12-22 04:53:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:44,446 INFO L93 Difference]: Finished difference Result 457 states and 549 transitions. [2020-12-22 04:53:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 04:53:44,447 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2020-12-22 04:53:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:44,450 INFO L225 Difference]: With dead ends: 457 [2020-12-22 04:53:44,450 INFO L226 Difference]: Without dead ends: 455 [2020-12-22 04:53:44,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2020-12-22 04:53:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-12-22 04:53:44,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 425. [2020-12-22 04:53:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-12-22 04:53:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 522 transitions. [2020-12-22 04:53:44,521 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 522 transitions. Word has length 37 [2020-12-22 04:53:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:44,521 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 522 transitions. [2020-12-22 04:53:44,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 04:53:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 522 transitions. [2020-12-22 04:53:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 04:53:44,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:44,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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 04:53:44,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:44,736 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:44,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1353666624, now seen corresponding path program 1 times [2020-12-22 04:53:44,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:44,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844354920] [2020-12-22 04:53:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:44,745 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:44,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408299175] [2020-12-22 04:53:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:44,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 73 conjunts are in the unsatisfiable core [2020-12-22 04:53:44,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:45,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844354920] [2020-12-22 04:53:45,260 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:45,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408299175] [2020-12-22 04:53:45,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:45,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 04:53:45,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575108879] [2020-12-22 04:53:45,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 04:53:45,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:45,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 04:53:45,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-12-22 04:53:45,261 INFO L87 Difference]: Start difference. First operand 425 states and 522 transitions. Second operand 14 states. [2020-12-22 04:53:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:46,428 INFO L93 Difference]: Finished difference Result 531 states and 641 transitions. [2020-12-22 04:53:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 04:53:46,428 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-12-22 04:53:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:46,431 INFO L225 Difference]: With dead ends: 531 [2020-12-22 04:53:46,431 INFO L226 Difference]: Without dead ends: 523 [2020-12-22 04:53:46,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2020-12-22 04:53:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-12-22 04:53:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 446. [2020-12-22 04:53:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-12-22 04:53:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 546 transitions. [2020-12-22 04:53:46,503 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 546 transitions. Word has length 37 [2020-12-22 04:53:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:46,503 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 546 transitions. [2020-12-22 04:53:46,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 04:53:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 546 transitions. [2020-12-22 04:53:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 04:53:46,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:46,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:46,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:46,718 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:46,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1479833839, now seen corresponding path program 2 times [2020-12-22 04:53:46,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:46,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441586887] [2020-12-22 04:53:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:46,728 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:46,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552856988] [2020-12-22 04:53:46,728 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:46,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:46,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:46,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 04:53:46,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:47,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441586887] [2020-12-22 04:53:47,013 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:47,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552856988] [2020-12-22 04:53:47,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:47,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 04:53:47,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678585446] [2020-12-22 04:53:47,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 04:53:47,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 04:53:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:47,019 INFO L87 Difference]: Start difference. First operand 446 states and 546 transitions. Second operand 12 states. [2020-12-22 04:53:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:47,969 INFO L93 Difference]: Finished difference Result 499 states and 603 transitions. [2020-12-22 04:53:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 04:53:47,969 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-12-22 04:53:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:47,972 INFO L225 Difference]: With dead ends: 499 [2020-12-22 04:53:47,972 INFO L226 Difference]: Without dead ends: 497 [2020-12-22 04:53:47,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-12-22 04:53:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-12-22 04:53:48,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 464. [2020-12-22 04:53:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-12-22 04:53:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 567 transitions. [2020-12-22 04:53:48,047 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 567 transitions. Word has length 37 [2020-12-22 04:53:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:48,047 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 567 transitions. [2020-12-22 04:53:48,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 04:53:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 567 transitions. [2020-12-22 04:53:48,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 04:53:48,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:48,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:48,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 04:53:48,262 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:48,262 INFO L82 PathProgramCache]: Analyzing trace with hash 62559017, now seen corresponding path program 2 times [2020-12-22 04:53:48,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:48,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317662402] [2020-12-22 04:53:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:48,271 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:48,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204175552] [2020-12-22 04:53:48,271 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:48,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:48,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:48,348 WARN L261 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 88 conjunts are in the unsatisfiable core [2020-12-22 04:53:48,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:49,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317662402] [2020-12-22 04:53:49,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:49,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204175552] [2020-12-22 04:53:49,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:49,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-22 04:53:49,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464233300] [2020-12-22 04:53:49,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 04:53:49,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:49,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 04:53:49,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-12-22 04:53:49,316 INFO L87 Difference]: Start difference. First operand 464 states and 567 transitions. Second operand 19 states. [2020-12-22 04:53:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:51,313 INFO L93 Difference]: Finished difference Result 600 states and 718 transitions. [2020-12-22 04:53:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 04:53:51,315 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-12-22 04:53:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:51,318 INFO L225 Difference]: With dead ends: 600 [2020-12-22 04:53:51,318 INFO L226 Difference]: Without dead ends: 590 [2020-12-22 04:53:51,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 04:53:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-12-22 04:53:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 485. [2020-12-22 04:53:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-12-22 04:53:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 591 transitions. [2020-12-22 04:53:51,390 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 591 transitions. Word has length 42 [2020-12-22 04:53:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:51,391 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 591 transitions. [2020-12-22 04:53:51,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 04:53:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 591 transitions. [2020-12-22 04:53:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 04:53:51,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:51,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:51,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 04:53:51,605 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:51,605 INFO L82 PathProgramCache]: Analyzing trace with hash 188726232, now seen corresponding path program 2 times [2020-12-22 04:53:51,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:51,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416801098] [2020-12-22 04:53:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:51,614 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:51,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958642474] [2020-12-22 04:53:51,614 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:51,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:51,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:51,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 04:53:51,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:52,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416801098] [2020-12-22 04:53:52,105 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:52,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958642474] [2020-12-22 04:53:52,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:52,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 04:53:52,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752040557] [2020-12-22 04:53:52,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 04:53:52,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:52,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 04:53:52,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:53:52,107 INFO L87 Difference]: Start difference. First operand 485 states and 591 transitions. Second operand 17 states. [2020-12-22 04:53:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:53,709 INFO L93 Difference]: Finished difference Result 639 states and 761 transitions. [2020-12-22 04:53:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 04:53:53,710 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-12-22 04:53:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:53,713 INFO L225 Difference]: With dead ends: 639 [2020-12-22 04:53:53,713 INFO L226 Difference]: Without dead ends: 637 [2020-12-22 04:53:53,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 04:53:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-12-22 04:53:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 503. [2020-12-22 04:53:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-12-22 04:53:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 612 transitions. [2020-12-22 04:53:53,804 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 612 transitions. Word has length 42 [2020-12-22 04:53:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:53,804 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 612 transitions. [2020-12-22 04:53:53,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 04:53:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 612 transitions. [2020-12-22 04:53:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 04:53:53,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:53,805 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:54,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:54,014 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:54,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:54,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1389632472, now seen corresponding path program 1 times [2020-12-22 04:53:54,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:54,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757777720] [2020-12-22 04:53:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:54,023 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:54,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169417104] [2020-12-22 04:53:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:54,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 04:53:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:54,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757777720] [2020-12-22 04:53:54,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:54,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169417104] [2020-12-22 04:53:54,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:54,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 04:53:54,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971606628] [2020-12-22 04:53:54,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 04:53:54,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:54,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 04:53:54,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:54,294 INFO L87 Difference]: Start difference. First operand 503 states and 612 transitions. Second operand 12 states. [2020-12-22 04:53:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:55,302 INFO L93 Difference]: Finished difference Result 719 states and 872 transitions. [2020-12-22 04:53:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 04:53:55,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-12-22 04:53:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:55,307 INFO L225 Difference]: With dead ends: 719 [2020-12-22 04:53:55,307 INFO L226 Difference]: Without dead ends: 717 [2020-12-22 04:53:55,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=769, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 04:53:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-12-22 04:53:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 599. [2020-12-22 04:53:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-12-22 04:53:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 726 transitions. [2020-12-22 04:53:55,412 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 726 transitions. Word has length 45 [2020-12-22 04:53:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:55,413 INFO L481 AbstractCegarLoop]: Abstraction has 599 states and 726 transitions. [2020-12-22 04:53:55,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 04:53:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 726 transitions. [2020-12-22 04:53:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 04:53:55,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:55,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:55,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 04:53:55,629 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:55,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:55,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1220921059, now seen corresponding path program 3 times [2020-12-22 04:53:55,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:55,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134245211] [2020-12-22 04:53:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:55,638 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:55,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356694895] [2020-12-22 04:53:55,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:55,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 04:53:55,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:55,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-22 04:53:55,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 04:53:56,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134245211] [2020-12-22 04:53:56,088 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:56,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356694895] [2020-12-22 04:53:56,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:56,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 04:53:56,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333017737] [2020-12-22 04:53:56,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 04:53:56,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 04:53:56,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:53:56,090 INFO L87 Difference]: Start difference. First operand 599 states and 726 transitions. Second operand 13 states. [2020-12-22 04:54:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:54:00,919 INFO L93 Difference]: Finished difference Result 748 states and 894 transitions. [2020-12-22 04:54:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 04:54:00,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-12-22 04:54:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:54:00,923 INFO L225 Difference]: With dead ends: 748 [2020-12-22 04:54:00,923 INFO L226 Difference]: Without dead ends: 740 [2020-12-22 04:54:00,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-12-22 04:54:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-12-22 04:54:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 616. [2020-12-22 04:54:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-12-22 04:54:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 745 transitions. [2020-12-22 04:54:01,056 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 745 transitions. Word has length 46 [2020-12-22 04:54:01,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:54:01,057 INFO L481 AbstractCegarLoop]: Abstraction has 616 states and 745 transitions. [2020-12-22 04:54:01,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 04:54:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 745 transitions. [2020-12-22 04:54:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 04:54:01,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:54:01,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:54:01,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:54:01,272 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:54:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:54:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1094753844, now seen corresponding path program 3 times [2020-12-22 04:54:01,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:54:01,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564470274] [2020-12-22 04:54:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:54:01,280 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:54:01,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406378219] [2020-12-22 04:54:01,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:54:01,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:54:01,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:54:01,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 04:54:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:54:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 04:54:03,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564470274] [2020-12-22 04:54:03,464 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:54:03,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406378219] [2020-12-22 04:54:03,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:54:03,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:54:03,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474008898] [2020-12-22 04:54:03,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:54:03,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:54:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:54:03,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2020-12-22 04:54:03,466 INFO L87 Difference]: Start difference. First operand 616 states and 745 transitions. Second operand 7 states. [2020-12-22 04:55:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:55:03,178 INFO L93 Difference]: Finished difference Result 622 states and 748 transitions. [2020-12-22 04:55:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:55:03,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-12-22 04:55:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:55:03,192 INFO L225 Difference]: With dead ends: 622 [2020-12-22 04:55:03,193 INFO L226 Difference]: Without dead ends: 620 [2020-12-22 04:55:03,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=34, Invalid=68, Unknown=8, NotChecked=0, Total=110 [2020-12-22 04:55:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-12-22 04:55:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 403. [2020-12-22 04:55:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-22 04:55:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 483 transitions. [2020-12-22 04:55:03,280 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 483 transitions. Word has length 46 [2020-12-22 04:55:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:55:03,281 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 483 transitions. [2020-12-22 04:55:03,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:55:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 483 transitions. [2020-12-22 04:55:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 04:55:03,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:55:03,282 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:55:03,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 04:55:03,482 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:55:03,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:55:03,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1298920666, now seen corresponding path program 2 times [2020-12-22 04:55:03,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:55:03,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820106756] [2020-12-22 04:55:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:55:03,492 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:55:03,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125734905] [2020-12-22 04:55:03,493 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:55:03,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:55:03,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:55:03,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 04:55:03,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:55:04,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820106756] [2020-12-22 04:55:04,144 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:55:04,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125734905] [2020-12-22 04:55:04,145 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 04:55:04,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:55:04,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 04:55:04,145 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 04:55:04,145 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:55:04,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 04:55:04,392 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 04:55:04,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:55:04 BoogieIcfgContainer [2020-12-22 04:55:04,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:55:04,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:55:04,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:55:04,394 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:55:04,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:53:27" (3/4) ... [2020-12-22 04:55:04,398 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 04:55:04,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:55:04,403 INFO L168 Benchmark]: Toolchain (without parser) took 98041.76 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 126.8 MB in the beginning and 225.0 MB in the end (delta: -98.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. [2020-12-22 04:55:04,403 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.6 MB in the end (delta: 152.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:55:04,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.91 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:55:04,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.28 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:55:04,404 INFO L168 Benchmark]: Boogie Preprocessor took 34.07 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:55:04,405 INFO L168 Benchmark]: RCFGBuilder took 471.71 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 129.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:55:04,405 INFO L168 Benchmark]: TraceAbstraction took 97155.21 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 129.1 MB in the beginning and 225.0 MB in the end (delta: -96.0 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:55:04,405 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 314.6 MB. Free memory is still 225.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:55:04,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.6 MB in the end (delta: 152.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 322.91 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.28 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.07 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 471.71 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 129.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 97155.21 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 129.1 MB in the beginning and 225.0 MB in the end (delta: -96.0 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. * Witness Printer took 5.07 ms. Allocated memory is still 314.6 MB. Free memory is still 225.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L22] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] a = x [L27] b = y [L28] p = 1 [L29] q = 0 [L30] r = 0 [L31] s = 1 [L33] COND TRUE 1 [L34] COND FALSE !(!(b != 0)) [L36] long long c, k; [L37] c = a [L38] k = 0 [L40] COND TRUE 1 [L41] COND FALSE !(!(c >= b)) [L43] long long d, v; [L44] d = 1 [L45] v = b [L47] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L53] COND TRUE !(c >= 2 * v) [L58] c = c - v [L59] k = k + d [L40] COND TRUE 1 [L41] COND TRUE !(c >= b) [L62] a = b [L63] b = c [L64] long long temp; [L65] temp = p [L66] p = q [L67] q = temp - q * k [L68] temp = r [L69] r = s [L70] s = temp - s * k [L33] COND TRUE 1 [L34] COND FALSE !(!(b != 0)) [L36] long long c, k; [L37] c = a [L38] k = 0 [L40] COND TRUE 1 [L41] COND FALSE !(!(c >= b)) [L43] long long d, v; [L44] d = 1 [L45] v = b [L47] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L53] COND TRUE !(c >= 2 * v) [L58] c = c - v [L59] k = k + d [L40] COND TRUE 1 [L41] COND TRUE !(c >= b) [L62] a = b [L63] b = c [L64] long long temp; [L65] temp = p [L66] p = q [L67] q = temp - q * k [L68] temp = r [L69] r = s [L70] s = temp - s * k [L33] COND TRUE 1 [L34] COND FALSE !(!(b != 0)) [L36] long long c, k; [L37] c = a [L38] k = 0 [L40] COND TRUE 1 [L41] COND FALSE !(!(c >= b)) [L43] long long d, v; [L44] d = 1 [L45] v = b [L47] COND TRUE 1 [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 97.0s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 79.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 913 SDtfs, 3802 SDslu, 3922 SDs, 0 SdLazy, 5852 SolverSat, 658 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 53.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 961 GetRequests, 527 SyntacticMatches, 3 SemanticMatches, 431 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2274 ImplicationChecksByTransitivity, 28.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=616occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 1604 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 741 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 715 ConstructedInterpolants, 0 QuantifiedInterpolants, 297152 SizeOfPredicates, 298 NumberOfNonLiveVariables, 3088 ConjunctsInSsa, 793 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 125/340 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...