/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:19:58,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:19:58,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:19:58,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:19:58,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:19:58,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:19:58,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:19:58,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:19:58,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:19:58,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:19:58,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:19:58,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:19:58,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:19:58,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:19:58,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:19:58,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:19:58,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:19:58,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:19:58,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:19:58,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:19:58,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:19:58,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:19:58,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:19:58,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:19:58,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 05:19:58,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 05:19:58,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 05:19:58,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 05:19:58,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 05:19:58,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 05:19:58,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:19:58,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:19:58,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:19:58,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:19:58,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:19:58,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:19:58,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:19:58,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:19:58,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:19:58,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:19:58,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:19:58,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:19:58,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:19:58,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:19:58,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:19:58,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:19:58,851 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:19:58,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:19:58,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:19:58,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:19:58,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:19:58,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:19:58,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:19:58,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:19:58,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:19:58,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:19:58,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:19:58,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:19:58,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:19:58,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:19:58,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:19:58,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:19:58,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:19:58,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:19:58,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:19:58,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:19:58,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:19:58,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:19:59,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:19:59,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:19:59,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:19:59,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:19:59,332 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:19:59,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c [2020-12-22 05:19:59,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6afaac772/499c45fb57144319a451a59aceb32e90/FLAG1f0522600 [2020-12-22 05:20:00,066 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:20:00,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c [2020-12-22 05:20:00,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6afaac772/499c45fb57144319a451a59aceb32e90/FLAG1f0522600 [2020-12-22 05:20:00,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6afaac772/499c45fb57144319a451a59aceb32e90 [2020-12-22 05:20:00,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:20:00,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:20:00,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:20:00,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:20:00,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:20:00,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f3f7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00, skipping insertion in model container [2020-12-22 05:20:00,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:20:00,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:20:00,659 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c[546,559] [2020-12-22 05:20:00,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:20:00,685 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:20:00,700 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c[546,559] [2020-12-22 05:20:00,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:20:00,724 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:20:00,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00 WrapperNode [2020-12-22 05:20:00,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:20:00,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:20:00,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:20:00,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:20:00,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:20:00,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:20:00,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:20:00,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:20:00,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... [2020-12-22 05:20:00,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:20:00,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:20:00,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:20:00,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:20:00,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:20:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:20:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:20:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:20:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:20:01,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:20:01,343 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-22 05:20:01,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:20:01 BoogieIcfgContainer [2020-12-22 05:20:01,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:20:01,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:20:01,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:20:01,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:20:01,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:20:00" (1/3) ... [2020-12-22 05:20:01,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd312f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:20:01, skipping insertion in model container [2020-12-22 05:20:01,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:20:00" (2/3) ... [2020-12-22 05:20:01,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd312f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:20:01, skipping insertion in model container [2020-12-22 05:20:01,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:20:01" (3/3) ... [2020-12-22 05:20:01,358 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound100.c [2020-12-22 05:20:01,365 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:20:01,371 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:20:01,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:20:01,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:20:01,501 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:20:01,501 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:20:01,501 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:20:01,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:20:01,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:20:01,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:20:01,502 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:20:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-22 05:20:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:20:01,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:01,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:01,528 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:01,535 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-22 05:20:01,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:01,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277356434] [2020-12-22 05:20:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:20:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:20:01,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277356434] [2020-12-22 05:20:01,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:20:01,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:20:01,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674565144] [2020-12-22 05:20:01,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:20:01,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:20:01,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:20:01,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:20:01,740 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-22 05:20:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:20:01,759 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-12-22 05:20:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:20:01,760 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 05:20:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:20:01,770 INFO L225 Difference]: With dead ends: 43 [2020-12-22 05:20:01,770 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 05:20:01,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:20:01,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 05:20:01,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-22 05:20:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 05:20:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-22 05:20:01,808 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-12-22 05:20:01,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:20:01,809 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-22 05:20:01,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:20:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-22 05:20:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:20:01,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:01,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:01,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:20:01,811 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:01,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-22 05:20:01,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:01,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904471224] [2020-12-22 05:20:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:01,839 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:01,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066624347] [2020-12-22 05:20:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:20:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:20:01,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:20:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:20:02,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904471224] [2020-12-22 05:20:02,143 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:20:02,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066624347] [2020-12-22 05:20:02,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:20:02,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:20:02,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352967740] [2020-12-22 05:20:02,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:20:02,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:20:02,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:20:02,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:20:02,147 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-12-22 05:20:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:20:02,316 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-22 05:20:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:20:02,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 05:20:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:20:02,318 INFO L225 Difference]: With dead ends: 29 [2020-12-22 05:20:02,318 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 05:20:02,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:20:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 05:20:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-22 05:20:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:20:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-12-22 05:20:02,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-12-22 05:20:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:20:02,326 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-12-22 05:20:02,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:20:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-12-22 05:20:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:20:02,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:02,327 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:02,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:20:02,542 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:02,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2131965670, now seen corresponding path program 1 times [2020-12-22 05:20:02,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:02,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939552244] [2020-12-22 05:20:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:02,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:02,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168048854] [2020-12-22 05:20:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:20:02,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:20:02,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:20:02,856 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 05:20:02,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939552244] [2020-12-22 05:20:02,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:20:02,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168048854] [2020-12-22 05:20:02,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:20:02,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:20:02,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415495471] [2020-12-22 05:20:02,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:20:02,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:20:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:20:02,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:20:02,868 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-12-22 05:20:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:20:03,330 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-12-22 05:20:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:20:03,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:20:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:20:03,332 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:20:03,332 INFO L226 Difference]: Without dead ends: 26 [2020-12-22 05:20:03,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:20:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-22 05:20:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-12-22 05:20:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 05:20:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-22 05:20:03,339 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2020-12-22 05:20:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:20:03,339 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-22 05:20:03,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:20:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-22 05:20:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:20:03,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:03,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:03,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:03,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:03,556 INFO L82 PathProgramCache]: Analyzing trace with hash -582143938, now seen corresponding path program 2 times [2020-12-22 05:20:03,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:03,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572729337] [2020-12-22 05:20:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:03,584 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:03,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887638655] [2020-12-22 05:20:03,586 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:03,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:20:03,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:20:03,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:20:03,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:20:05,856 WARN L838 $PredicateComparison]: unable to prove that (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (<= 1 c_ULTIMATE.start_main_~k~0) (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1))) is different from false [2020-12-22 05:20:12,044 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-22 05:20:14,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-12-22 05:20:14,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572729337] [2020-12-22 05:20:14,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:20:14,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887638655] [2020-12-22 05:20:14,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:20:14,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:20:14,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114701993] [2020-12-22 05:20:14,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:20:14,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:20:14,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:20:14,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=52, Unknown=3, NotChecked=14, Total=90 [2020-12-22 05:20:14,131 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-12-22 05:20:32,560 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (<= 1 c_ULTIMATE.start_main_~k~0))) (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) .cse1 (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (or (and .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond 1)) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond 0) (< c_ULTIMATE.start_main_~k~0 1))) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1)))) is different from false [2020-12-22 05:21:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:21:27,832 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-12-22 05:21:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:21:27,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-22 05:21:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:21:27,833 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:21:27,834 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 05:21:27,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 66.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=8, NotChecked=58, Total=306 [2020-12-22 05:21:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 05:21:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-12-22 05:21:27,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 05:21:27,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-12-22 05:21:27,841 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2020-12-22 05:21:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:21:27,842 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-12-22 05:21:27,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:21:27,842 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-12-22 05:21:27,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:21:27,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:21:27,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:21:28,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:21:28,049 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:21:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:21:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash 432797915, now seen corresponding path program 1 times [2020-12-22 05:21:28,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:21:28,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241146290] [2020-12-22 05:21:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:21:28,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:21:28,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555422792] [2020-12-22 05:21:28,068 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 05:21:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:21:28,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:21:28,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:21:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:21:28,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241146290] [2020-12-22 05:21:28,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:21:28,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555422792] [2020-12-22 05:21:28,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:21:28,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:21:28,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761198172] [2020-12-22 05:21:28,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:21:28,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:21:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:21:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:21:28,276 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2020-12-22 05:21:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:21:32,646 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-22 05:21:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:21:32,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 05:21:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:21:32,648 INFO L225 Difference]: With dead ends: 27 [2020-12-22 05:21:32,648 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 05:21:32,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:21:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 05:21:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 05:21:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 05:21:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-22 05:21:32,655 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2020-12-22 05:21:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:21:32,655 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-22 05:21:32,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:21:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-22 05:21:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:21:32,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:21:32,656 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:21:32,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:21:32,858 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:21:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:21:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash 432838630, now seen corresponding path program 3 times [2020-12-22 05:21:32,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:21:32,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898081747] [2020-12-22 05:21:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:21:32,877 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:21:32,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886314249] [2020-12-22 05:21:32,878 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:22:31,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:22:31,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:22:31,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:22:31,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:22:35,324 WARN L197 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 19 [2020-12-22 05:22:44,276 WARN L197 SmtUtils]: Spent 4.32 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-22 05:22:44,309 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:22:44,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:23:02,500 WARN L197 SmtUtils]: Spent 11.33 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-22 05:23:08,574 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (and (not (= (+ (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0) (+ (* .cse0 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (<= ULTIMATE.start_main_~z~0 100) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse0 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse0) (* .cse0 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start_main_~z~0))))) is different from false [2020-12-22 05:23:10,580 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (and (not (= (+ (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0) (+ (* .cse0 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (<= ULTIMATE.start_main_~z~0 100) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse0 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse0) (* .cse0 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start_main_~z~0))))) is different from true [2020-12-22 05:23:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:23:10,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898081747] [2020-12-22 05:23:10,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:23:10,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886314249] [2020-12-22 05:23:10,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:23:10,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:23:10,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711136663] [2020-12-22 05:23:10,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:23:10,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:23:10,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:23:10,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=76, Unknown=5, NotChecked=18, Total=132 [2020-12-22 05:23:10,587 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2020-12-22 05:23:21,237 WARN L197 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2020-12-22 05:23:54,511 WARN L197 SmtUtils]: Spent 22.49 s on a formula simplification that was a NOOP. DAG size: 41