/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/egcd2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:53:01,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:53:01,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:53:01,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:53:01,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:53:01,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:53:01,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:53:01,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:53:01,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:53:01,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:53:01,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:53:01,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:53:01,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:53:01,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:53:01,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:53:01,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:53:01,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:53:01,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:53:01,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:53:01,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:53:01,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:53:01,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:53:01,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:53:01,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:53:01,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 04:53:01,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 04:53:01,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 04:53:01,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 04:53:01,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 04:53:01,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 04:53:01,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:53:01,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:53:01,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:53:01,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:53:01,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:53:01,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:53:01,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:53:01,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:53:01,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:53:01,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:53:01,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:53:01,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:53:01,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:53:01,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:53:01,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:53:01,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:53:01,799 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:53:01,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:53:01,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:53:01,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:53:01,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:53:01,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:53:01,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:53:01,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:53:01,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:53:01,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:53:01,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:53:01,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:53:01,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:53:01,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:53:01,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:53:01,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:53:01,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:53:01,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:53:01,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:53:01,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:53:01,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:53:01,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:53:02,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:53:02,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:53:02,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:53:02,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:53:02,241 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:53:02,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd2-ll.c [2020-12-22 04:53:02,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48548f8ca/15e9074f7485468ca0d8d60b594bc70a/FLAG4cf569373 [2020-12-22 04:53:03,004 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:53:03,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd2-ll.c [2020-12-22 04:53:03,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48548f8ca/15e9074f7485468ca0d8d60b594bc70a/FLAG4cf569373 [2020-12-22 04:53:03,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48548f8ca/15e9074f7485468ca0d8d60b594bc70a [2020-12-22 04:53:03,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:53:03,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:53:03,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:53:03,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:53:03,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:53:03,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b49ca1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03, skipping insertion in model container [2020-12-22 04:53:03,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:53:03,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:53:03,566 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/egcd2-ll.c[490,503] [2020-12-22 04:53:03,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:53:03,602 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:53:03,617 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/egcd2-ll.c[490,503] [2020-12-22 04:53:03,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:53:03,648 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:53:03,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03 WrapperNode [2020-12-22 04:53:03,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:53:03,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:53:03,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:53:03,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:53:03,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:53:03,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:53:03,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:53:03,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:53:03,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (1/1) ... [2020-12-22 04:53:03,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:53:03,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:53:03,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:53:03,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:53:03,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (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 04:53:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:53:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:53:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:53:03,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:53:04,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:53:04,297 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 04:53:04,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:53:04 BoogieIcfgContainer [2020-12-22 04:53:04,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:53:04,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:53:04,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:53:04,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:53:04,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:53:03" (1/3) ... [2020-12-22 04:53:04,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a0f842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:53:04, skipping insertion in model container [2020-12-22 04:53:04,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:53:03" (2/3) ... [2020-12-22 04:53:04,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a0f842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:53:04, skipping insertion in model container [2020-12-22 04:53:04,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:53:04" (3/3) ... [2020-12-22 04:53:04,322 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll.c [2020-12-22 04:53:04,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:53:04,343 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 04:53:04,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 04:53:04,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:53:04,405 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:53:04,406 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:53:04,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:53:04,406 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:53:04,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:53:04,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:53:04,406 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:53:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 04:53:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:53:04,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:04,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:04,434 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:04,443 INFO L82 PathProgramCache]: Analyzing trace with hash -143929835, now seen corresponding path program 1 times [2020-12-22 04:53:04,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:04,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984413374] [2020-12-22 04:53:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:04,656 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 04:53:04,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984413374] [2020-12-22 04:53:04,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:04,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:53:04,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119844116] [2020-12-22 04:53:04,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:53:04,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:04,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:53:04,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:53:04,685 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 04:53:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:04,708 INFO L93 Difference]: Finished difference Result 79 states and 108 transitions. [2020-12-22 04:53:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:53:04,710 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 04:53:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:04,725 INFO L225 Difference]: With dead ends: 79 [2020-12-22 04:53:04,725 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 04:53:04,729 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 04:53:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 04:53:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 04:53:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 04:53:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-12-22 04:53:04,776 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 13 [2020-12-22 04:53:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:04,776 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-12-22 04:53:04,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:53:04,776 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-12-22 04:53:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:53:04,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:04,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:04,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:53:04,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:04,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:04,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1053959272, now seen corresponding path program 1 times [2020-12-22 04:53:04,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:04,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269285315] [2020-12-22 04:53:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:04,802 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:04,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374461669] [2020-12-22 04:53:04,803 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 04:53:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:04,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 04:53:04,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:04,994 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 04:53:04,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269285315] [2020-12-22 04:53:04,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:04,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374461669] [2020-12-22 04:53:04,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:04,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:53:04,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661667841] [2020-12-22 04:53:04,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:53:04,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:05,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:53:05,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:53:05,001 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 5 states. [2020-12-22 04:53:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:05,116 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-12-22 04:53:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:53:05,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 04:53:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:05,118 INFO L225 Difference]: With dead ends: 65 [2020-12-22 04:53:05,118 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 04:53:05,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 04:53:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 04:53:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-12-22 04:53:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 04:53:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-22 04:53:05,130 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 14 [2020-12-22 04:53:05,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:05,131 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-22 04:53:05,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:53:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-22 04:53:05,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:53:05,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:05,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:05,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:53:05,348 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1053955298, now seen corresponding path program 1 times [2020-12-22 04:53:05,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:05,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568300422] [2020-12-22 04:53:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:05,383 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:05,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929403439] [2020-12-22 04:53:05,389 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 04:53:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:05,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 04:53:05,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:05,556 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 04:53:05,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568300422] [2020-12-22 04:53:05,557 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:05,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929403439] [2020-12-22 04:53:05,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:05,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 04:53:05,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554988900] [2020-12-22 04:53:05,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:53:05,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:05,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:53:05,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:05,561 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 8 states. [2020-12-22 04:53:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:05,848 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-12-22 04:53:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:53:05,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-22 04:53:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:05,856 INFO L225 Difference]: With dead ends: 75 [2020-12-22 04:53:05,857 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 04:53:05,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:53:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 04:53:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 41. [2020-12-22 04:53:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 04:53:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-12-22 04:53:05,891 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 14 [2020-12-22 04:53:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:05,892 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-12-22 04:53:05,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:53:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-12-22 04:53:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 04:53:05,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:05,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:06,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:06,109 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:06,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:06,111 INFO L82 PathProgramCache]: Analyzing trace with hash 761397313, now seen corresponding path program 1 times [2020-12-22 04:53:06,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:06,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475451744] [2020-12-22 04:53:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:06,146 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:06,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099060004] [2020-12-22 04:53:06,147 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 04:53:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:06,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:53:06,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:06,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475451744] [2020-12-22 04:53:06,289 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:06,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099060004] [2020-12-22 04:53:06,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:06,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:53:06,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112008313] [2020-12-22 04:53:06,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:53:06,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:06,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:53:06,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:53:06,293 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2020-12-22 04:53:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:06,394 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-12-22 04:53:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:53:06,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 04:53:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:06,396 INFO L225 Difference]: With dead ends: 59 [2020-12-22 04:53:06,396 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 04:53:06,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 04:53:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-12-22 04:53:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 04:53:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-22 04:53:06,405 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 16 [2020-12-22 04:53:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:06,405 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-22 04:53:06,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:53:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-22 04:53:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:53:06,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:06,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:06,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:06,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:06,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1558534660, now seen corresponding path program 1 times [2020-12-22 04:53:06,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:06,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025760440] [2020-12-22 04:53:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:06,644 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:06,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531664578] [2020-12-22 04:53:06,645 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 04:53:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:06,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:53:06,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:06,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025760440] [2020-12-22 04:53:06,842 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:06,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531664578] [2020-12-22 04:53:06,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:06,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:53:06,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169964951] [2020-12-22 04:53:06,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:53:06,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:06,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:53:06,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:53:06,849 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 6 states. [2020-12-22 04:53:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:06,977 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-22 04:53:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:53:06,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 04:53:06,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:06,978 INFO L225 Difference]: With dead ends: 57 [2020-12-22 04:53:06,979 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 04:53:06,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:06,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 04:53:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2020-12-22 04:53:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 04:53:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-12-22 04:53:06,988 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 18 [2020-12-22 04:53:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:06,988 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-12-22 04:53:06,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:53:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-12-22 04:53:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 04:53:06,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:06,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:07,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:07,203 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:07,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:07,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1191620505, now seen corresponding path program 1 times [2020-12-22 04:53:07,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:07,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247649421] [2020-12-22 04:53:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:07,219 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:07,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616073928] [2020-12-22 04:53:07,219 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 04:53:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:07,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 04:53:07,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:07,479 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 04:53:07,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247649421] [2020-12-22 04:53:07,480 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:07,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616073928] [2020-12-22 04:53:07,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:07,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 04:53:07,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746635606] [2020-12-22 04:53:07,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:53:07,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:07,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:53:07,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:07,483 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2020-12-22 04:53:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:09,745 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-12-22 04:53:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:53:09,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-12-22 04:53:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:09,747 INFO L225 Difference]: With dead ends: 59 [2020-12-22 04:53:09,747 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 04:53:09,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 04:53:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-12-22 04:53:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 04:53:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-12-22 04:53:09,756 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2020-12-22 04:53:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:09,757 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-12-22 04:53:09,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:53:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-12-22 04:53:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 04:53:09,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:09,758 INFO L422 BasicCegarLoop]: trace histogram [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 04:53:09,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 04:53:09,973 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:09,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1656795766, now seen corresponding path program 1 times [2020-12-22 04:53:09,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:09,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663389189] [2020-12-22 04:53:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:09,988 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:09,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109102242] [2020-12-22 04:53:09,989 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 04:53:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:10,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 04:53:10,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:10,150 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 04:53:10,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663389189] [2020-12-22 04:53:10,151 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:10,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109102242] [2020-12-22 04:53:10,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:10,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 04:53:10,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501319815] [2020-12-22 04:53:10,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:53:10,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:10,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:53:10,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:53:10,154 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-12-22 04:53:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:10,371 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-12-22 04:53:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:53:10,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-22 04:53:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:10,373 INFO L225 Difference]: With dead ends: 100 [2020-12-22 04:53:10,373 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 04:53:10,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:53:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 04:53:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2020-12-22 04:53:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 04:53:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-22 04:53:10,388 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-12-22 04:53:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:10,389 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-22 04:53:10,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:53:10,389 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-22 04:53:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 04:53:10,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:10,390 INFO L422 BasicCegarLoop]: trace histogram [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 04:53:10,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:10,604 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash -140859955, now seen corresponding path program 1 times [2020-12-22 04:53:10,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:10,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775530548] [2020-12-22 04:53:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:10,619 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:10,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653260678] [2020-12-22 04:53:10,620 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 04:53:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:10,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 04:53:10,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:10,768 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 04:53:10,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775530548] [2020-12-22 04:53:10,769 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:10,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653260678] [2020-12-22 04:53:10,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:10,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:53:10,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022486139] [2020-12-22 04:53:10,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:53:10,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:10,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:53:10,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:53:10,771 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 7 states. [2020-12-22 04:53:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:11,023 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-12-22 04:53:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:53:11,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-12-22 04:53:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:11,025 INFO L225 Difference]: With dead ends: 161 [2020-12-22 04:53:11,028 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 04:53:11,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 04:53:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 105. [2020-12-22 04:53:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 04:53:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2020-12-22 04:53:11,093 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 26 [2020-12-22 04:53:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:11,095 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2020-12-22 04:53:11,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:53:11,095 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2020-12-22 04:53:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 04:53:11,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:11,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:11,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:11,311 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:11,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2076512566, now seen corresponding path program 1 times [2020-12-22 04:53:11,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:11,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236869973] [2020-12-22 04:53:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:11,325 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:11,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150767740] [2020-12-22 04:53:11,326 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 04:53:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:11,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 04:53:11,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:11,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236869973] [2020-12-22 04:53:11,577 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:11,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150767740] [2020-12-22 04:53:11,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:11,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:53:11,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484658710] [2020-12-22 04:53:11,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:53:11,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:11,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:53:11,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:11,587 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand 9 states. [2020-12-22 04:53:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:11,866 INFO L93 Difference]: Finished difference Result 172 states and 207 transitions. [2020-12-22 04:53:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:53:11,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-22 04:53:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:11,870 INFO L225 Difference]: With dead ends: 172 [2020-12-22 04:53:11,870 INFO L226 Difference]: Without dead ends: 166 [2020-12-22 04:53:11,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-22 04:53:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2020-12-22 04:53:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-22 04:53:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2020-12-22 04:53:11,896 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 28 [2020-12-22 04:53:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:11,896 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2020-12-22 04:53:11,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:53:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2020-12-22 04:53:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 04:53:11,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:11,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:12,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 04:53:12,114 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:12,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1631059527, now seen corresponding path program 1 times [2020-12-22 04:53:12,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:12,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893741705] [2020-12-22 04:53:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:12,128 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:12,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840581100] [2020-12-22 04:53:12,129 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 04:53:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:12,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 04:53:12,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:12,448 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 04:53:12,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893741705] [2020-12-22 04:53:12,449 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:12,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840581100] [2020-12-22 04:53:12,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:12,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 04:53:12,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848520533] [2020-12-22 04:53:12,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:53:12,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:12,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:53:12,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:53:12,452 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand 10 states. [2020-12-22 04:53:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:12,863 INFO L93 Difference]: Finished difference Result 163 states and 196 transitions. [2020-12-22 04:53:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:53:12,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-22 04:53:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:12,865 INFO L225 Difference]: With dead ends: 163 [2020-12-22 04:53:12,865 INFO L226 Difference]: Without dead ends: 161 [2020-12-22 04:53:12,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:53:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-22 04:53:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2020-12-22 04:53:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-22 04:53:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 188 transitions. [2020-12-22 04:53:12,887 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 188 transitions. Word has length 30 [2020-12-22 04:53:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:12,888 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 188 transitions. [2020-12-22 04:53:12,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:53:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 188 transitions. [2020-12-22 04:53:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 04:53:12,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:12,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:13,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:13,104 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:13,105 INFO L82 PathProgramCache]: Analyzing trace with hash 215015132, now seen corresponding path program 1 times [2020-12-22 04:53:13,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:13,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760221110] [2020-12-22 04:53:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:13,120 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:13,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526675993] [2020-12-22 04:53:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:13,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-22 04:53:13,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:13,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760221110] [2020-12-22 04:53:13,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:13,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526675993] [2020-12-22 04:53:13,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:13,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:53:13,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712407289] [2020-12-22 04:53:13,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:53:13,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:13,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:53:13,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:53:13,423 INFO L87 Difference]: Start difference. First operand 153 states and 188 transitions. Second operand 9 states. [2020-12-22 04:53:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:13,807 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2020-12-22 04:53:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 04:53:13,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-22 04:53:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:13,809 INFO L225 Difference]: With dead ends: 168 [2020-12-22 04:53:13,809 INFO L226 Difference]: Without dead ends: 166 [2020-12-22 04:53:13,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-12-22 04:53:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-22 04:53:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2020-12-22 04:53:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-22 04:53:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 186 transitions. [2020-12-22 04:53:13,834 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 186 transitions. Word has length 32 [2020-12-22 04:53:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:13,835 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 186 transitions. [2020-12-22 04:53:13,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:53:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 186 transitions. [2020-12-22 04:53:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 04:53:13,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:13,836 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] [2020-12-22 04:53:14,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:14,050 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:14,051 INFO L82 PathProgramCache]: Analyzing trace with hash -258480994, now seen corresponding path program 2 times [2020-12-22 04:53:14,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:14,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621287424] [2020-12-22 04:53:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:14,064 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:14,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227294487] [2020-12-22 04:53:14,064 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 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 04:53:14,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:14,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:14,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 04:53:14,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:14,386 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 04:53:14,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621287424] [2020-12-22 04:53:14,387 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:14,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227294487] [2020-12-22 04:53:14,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:14,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 04:53:14,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97542965] [2020-12-22 04:53:14,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 04:53:14,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:14,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 04:53:14,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:14,390 INFO L87 Difference]: Start difference. First operand 153 states and 186 transitions. Second operand 12 states. [2020-12-22 04:53:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:14,814 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2020-12-22 04:53:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 04:53:14,815 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-12-22 04:53:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:14,816 INFO L225 Difference]: With dead ends: 175 [2020-12-22 04:53:14,817 INFO L226 Difference]: Without dead ends: 173 [2020-12-22 04:53:14,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-12-22 04:53:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-22 04:53:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 162. [2020-12-22 04:53:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-22 04:53:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2020-12-22 04:53:14,840 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 32 [2020-12-22 04:53:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:14,857 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2020-12-22 04:53:14,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 04:53:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2020-12-22 04:53:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 04:53:14,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:14,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:15,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 04:53:15,067 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:15,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 166708793, now seen corresponding path program 1 times [2020-12-22 04:53:15,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:15,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132745271] [2020-12-22 04:53:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:15,079 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:15,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686797614] [2020-12-22 04:53:15,080 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 04:53:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:15,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-22 04:53:15,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:15,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132745271] [2020-12-22 04:53:15,596 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:15,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686797614] [2020-12-22 04:53:15,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:15,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 04:53:15,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057904315] [2020-12-22 04:53:15,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 04:53:15,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:15,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 04:53:15,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:53:15,598 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand 13 states. [2020-12-22 04:53:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:16,290 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2020-12-22 04:53:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 04:53:16,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-12-22 04:53:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:16,293 INFO L225 Difference]: With dead ends: 198 [2020-12-22 04:53:16,293 INFO L226 Difference]: Without dead ends: 192 [2020-12-22 04:53:16,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-12-22 04:53:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-22 04:53:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 185. [2020-12-22 04:53:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-22 04:53:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2020-12-22 04:53:16,318 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 35 [2020-12-22 04:53:16,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:16,319 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2020-12-22 04:53:16,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 04:53:16,319 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2020-12-22 04:53:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 04:53:16,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:16,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:16,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 04:53:16,536 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:16,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1049273685, now seen corresponding path program 2 times [2020-12-22 04:53:16,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:16,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238267565] [2020-12-22 04:53:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:16,548 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:16,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102074128] [2020-12-22 04:53:16,548 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 04:53:16,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:16,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:16,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 04:53:16,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:16,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238267565] [2020-12-22 04:53:16,678 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:16,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102074128] [2020-12-22 04:53:16,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:53:16,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:53:16,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128694077] [2020-12-22 04:53:16,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:53:16,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:16,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:53:16,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:53:16,680 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand 5 states. [2020-12-22 04:53:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:16,785 INFO L93 Difference]: Finished difference Result 244 states and 289 transitions. [2020-12-22 04:53:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:53:16,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-22 04:53:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:16,787 INFO L225 Difference]: With dead ends: 244 [2020-12-22 04:53:16,787 INFO L226 Difference]: Without dead ends: 170 [2020-12-22 04:53:16,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 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 04:53:16,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-22 04:53:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 150. [2020-12-22 04:53:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-22 04:53:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 171 transitions. [2020-12-22 04:53:16,814 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 171 transitions. Word has length 40 [2020-12-22 04:53:16,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:16,814 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 171 transitions. [2020-12-22 04:53:16,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:53:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 171 transitions. [2020-12-22 04:53:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 04:53:16,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:16,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:17,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 04:53:17,033 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:17,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:17,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1676607048, now seen corresponding path program 1 times [2020-12-22 04:53:17,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:17,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252850306] [2020-12-22 04:53:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:17,047 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:17,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416646879] [2020-12-22 04:53:17,048 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 04:53:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:53:17,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 68 conjunts are in the unsatisfiable core [2020-12-22 04:53:17,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:53:17,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252850306] [2020-12-22 04:53:17,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:17,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416646879] [2020-12-22 04:53:17,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:17,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 04:53:17,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836480350] [2020-12-22 04:53:17,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 04:53:17,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 04:53:17,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-22 04:53:17,903 INFO L87 Difference]: Start difference. First operand 150 states and 171 transitions. Second operand 14 states. [2020-12-22 04:53:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:36,859 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2020-12-22 04:53:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 04:53:36,861 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-12-22 04:53:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:36,863 INFO L225 Difference]: With dead ends: 161 [2020-12-22 04:53:36,863 INFO L226 Difference]: Without dead ends: 159 [2020-12-22 04:53:36,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-12-22 04:53:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-22 04:53:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2020-12-22 04:53:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-22 04:53:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2020-12-22 04:53:36,891 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 41 [2020-12-22 04:53:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:36,891 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2020-12-22 04:53:36,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 04:53:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2020-12-22 04:53:36,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 04:53:36,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:36,894 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:37,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:37,109 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:37,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1203110922, now seen corresponding path program 3 times [2020-12-22 04:53:37,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:37,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428266118] [2020-12-22 04:53:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:37,129 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:37,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245481083] [2020-12-22 04:53:37,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:53:37,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 04:53:37,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 04:53:37,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 04:53:37,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428266118] [2020-12-22 04:53:37,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:37,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245481083] [2020-12-22 04:53:37,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:37,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:53:37,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928338457] [2020-12-22 04:53:37,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:53:37,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:37,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:53:37,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:53:37,520 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand 8 states. [2020-12-22 04:53:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:43,976 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-12-22 04:53:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:53:43,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-12-22 04:53:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:43,979 INFO L225 Difference]: With dead ends: 127 [2020-12-22 04:53:43,979 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 04:53:43,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:53:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 04:53:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-12-22 04:53:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-22 04:53:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-12-22 04:53:44,001 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 41 [2020-12-22 04:53:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:44,001 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-12-22 04:53:44,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:53:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-12-22 04:53:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 04:53:44,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:44,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:53:44,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 04:53:44,217 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:44,218 INFO L82 PathProgramCache]: Analyzing trace with hash 73031501, now seen corresponding path program 2 times [2020-12-22 04:53:44,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:44,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712733921] [2020-12-22 04:53:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:44,233 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:44,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815038644] [2020-12-22 04:53:44,234 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 04:53:44,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:53:44,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:44,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-22 04:53:44,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:44,777 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 04:53:44,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712733921] [2020-12-22 04:53:44,778 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:53:44,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815038644] [2020-12-22 04:53:44,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:53:44,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 04:53:44,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557517535] [2020-12-22 04:53:44,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 04:53:44,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:53:44,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 04:53:44,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:53:44,780 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 12 states. [2020-12-22 04:53:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:53:45,463 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2020-12-22 04:53:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 04:53:45,464 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-12-22 04:53:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:53:45,465 INFO L225 Difference]: With dead ends: 157 [2020-12-22 04:53:45,465 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 04:53:45,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-12-22 04:53:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 04:53:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2020-12-22 04:53:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-22 04:53:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2020-12-22 04:53:45,489 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 44 [2020-12-22 04:53:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:53:45,489 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2020-12-22 04:53:45,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 04:53:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2020-12-22 04:53:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 04:53:45,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:53:45,490 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 04:53:45,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 04:53:45,704 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:53:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:53:45,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1376461020, now seen corresponding path program 3 times [2020-12-22 04:53:45,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:53:45,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061796508] [2020-12-22 04:53:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:53:45,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:53:45,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946454882] [2020-12-22 04:53:45,717 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 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 04:53:45,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:53:45,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:53:45,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 04:53:45,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:53:46,316 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:53:50,111 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 04:53:52,975 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:53:52,996 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:54:15,113 WARN L197 SmtUtils]: Spent 10.29 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-22 04:54:21,345 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~q~0 Int) (v_prenex_3 Int) (ULTIMATE.start_main_~s~0 Int) (ULTIMATE.start_main_~r~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int) (ULTIMATE.start_main_~k~0 Int)) (let ((.cse0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0))) (and (not (= ULTIMATE.start_main_~k~0 0)) (= (mod (+ (* (+ ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) (* (+ (* v_prenex_3 ULTIMATE.start_main_~k~0) ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0) (not (= (+ .cse0 .cse1) 0)) (= (+ (* v_prenex_3 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (div (+ .cse0 .cse1 (* v_prenex_3 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~k~0))))) is different from false [2020-12-22 04:54:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 04:54:21,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061796508] [2020-12-22 04:54:21,366 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:54:21,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946454882] [2020-12-22 04:54:21,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:54:21,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 04:54:21,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181587647] [2020-12-22 04:54:21,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 04:54:21,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:54:21,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 04:54:21,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=88, Unknown=5, NotChecked=18, Total=132 [2020-12-22 04:54:21,372 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand 12 states. [2020-12-22 04:54:32,269 WARN L197 SmtUtils]: Spent 8.67 s on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-12-22 04:55:04,098 WARN L197 SmtUtils]: Spent 10.43 s on a formula simplification. DAG size of input: 59 DAG size of output: 19 [2020-12-22 04:55:30,707 WARN L197 SmtUtils]: Spent 10.40 s on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 04:55:46,509 WARN L197 SmtUtils]: Spent 5.72 s on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-12-22 04:56:04,902 WARN L197 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 04:56:52,403 WARN L197 SmtUtils]: Spent 8.56 s on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2020-12-22 04:56:58,478 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_prenex_3 Int) (ULTIMATE.start_main_~r~0 Int) (ULTIMATE.start_main_~k~0 Int)) (and (not (= ULTIMATE.start_main_~k~0 0)) (= (+ (* v_prenex_3 c_ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (div (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0) (* v_prenex_3 c_ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* (- 1) c_ULTIMATE.start_main_~b~0)) ULTIMATE.start_main_~k~0)) (= (mod (+ (* (+ c_ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~b~0 (- 1)) (* (+ (* v_prenex_3 ULTIMATE.start_main_~k~0) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0))) (exists ((v_prenex_3 Int) (ULTIMATE.start_main_~r~0 Int) (ULTIMATE.start_main_~k~0 Int)) (and (not (= ULTIMATE.start_main_~k~0 0)) (= (mod (+ (* (+ c_ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) c_ULTIMATE.start_main_~y~0) (* (+ (* v_prenex_3 ULTIMATE.start_main_~k~0) c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0) (= (+ (* v_prenex_3 c_ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0)) (div (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0) (* v_prenex_3 c_ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~k~0))))) is different from true