/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/hard2_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:30:55,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:30:55,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:30:55,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:30:55,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:30:55,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:30:55,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:30:55,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:30:55,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:30:55,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:30:55,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:30:55,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:30:55,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:30:55,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:30:55,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:30:55,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:30:55,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:30:55,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:30:55,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:30:55,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:30:55,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:30:55,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:30:55,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:30:55,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:30:55,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:30:55,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:30:55,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:30:55,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:30:55,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:30:55,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:30:55,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:30:55,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:30:55,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:30:55,716 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:30:55,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:30:55,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:30:55,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:30:55,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:30:55,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:30:55,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:30:55,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:30:55,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:30:55,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:30:55,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:30:55,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:30:55,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:30:55,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:30:55,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:30:55,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:30:55,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:30:55,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:30:55,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:30:55,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:30:55,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:30:55,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:30:56,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:30:56,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:30:56,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:30:56,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:30:56,222 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:30:56,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-22 05:30:56,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c0059f4/bc4f2e7cba4641cea09e601d10effc45/FLAGb022c8f24 [2020-12-22 05:30:56,976 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:30:56,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-22 05:30:56,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c0059f4/bc4f2e7cba4641cea09e601d10effc45/FLAGb022c8f24 [2020-12-22 05:30:57,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c0059f4/bc4f2e7cba4641cea09e601d10effc45 [2020-12-22 05:30:57,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:30:57,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:30:57,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:57,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:30:57,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:30:57,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3add5cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57, skipping insertion in model container [2020-12-22 05:30:57,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:30:57,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:30:57,608 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/hard2_unwindbound10.c[526,539] [2020-12-22 05:30:57,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:57,656 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:30:57,675 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/hard2_unwindbound10.c[526,539] [2020-12-22 05:30:57,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:57,721 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:30:57,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57 WrapperNode [2020-12-22 05:30:57,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:57,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:57,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:30:57,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:30:57,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:57,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:30:57,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:30:57,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:30:57,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... [2020-12-22 05:30:57,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:30:57,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:30:57,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:30:57,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:30:57,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:30:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:30:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:30:57,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:30:57,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:30:58,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:30:58,376 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-22 05:30:58,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:58 BoogieIcfgContainer [2020-12-22 05:30:58,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:30:58,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:30:58,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:30:58,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:30:58,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:30:57" (1/3) ... [2020-12-22 05:30:58,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a2f566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:58, skipping insertion in model container [2020-12-22 05:30:58,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:57" (2/3) ... [2020-12-22 05:30:58,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a2f566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:58, skipping insertion in model container [2020-12-22 05:30:58,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:58" (3/3) ... [2020-12-22 05:30:58,388 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound10.c [2020-12-22 05:30:58,395 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:30:58,401 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:30:58,421 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:30:58,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:30:58,452 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:30:58,452 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:30:58,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:30:58,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:30:58,453 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:30:58,453 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:30:58,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:30:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-22 05:30:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:30:58,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:58,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:30:58,477 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:30:58,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:58,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893193459] [2020-12-22 05:30:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:58,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893193459] [2020-12-22 05:30:58,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:58,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:58,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813629958] [2020-12-22 05:30:58,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:58,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:58,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:58,794 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-22 05:30:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:58,944 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-22 05:30:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:58,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:30:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:58,955 INFO L225 Difference]: With dead ends: 102 [2020-12-22 05:30:58,956 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 05:30:58,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 05:30:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-22 05:30:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:30:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 05:30:59,000 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 05:30:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:59,000 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 05:30:59,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 05:30:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:30:59,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:59,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:59,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:30:59,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:59,003 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2020-12-22 05:30:59,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:59,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777040392] [2020-12-22 05:30:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:59,020 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:59,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618336946] [2020-12-22 05:30:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:59,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:30:59,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:59,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777040392] [2020-12-22 05:30:59,149 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:59,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618336946] [2020-12-22 05:30:59,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:59,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:30:59,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557458787] [2020-12-22 05:30:59,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:59,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:59,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:59,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:59,153 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 05:30:59,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:59,175 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-22 05:30:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:30:59,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:30:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:59,178 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:30:59,178 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 05:30:59,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 05:30:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-22 05:30:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:30:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:30:59,188 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:30:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:59,188 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:30:59,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:30:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:30:59,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:59,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:59,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:30:59,405 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:59,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:59,407 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 05:30:59,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:59,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879898260] [2020-12-22 05:30:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:59,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879898260] [2020-12-22 05:30:59,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:59,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:59,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790212997] [2020-12-22 05:30:59,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:59,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:59,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:59,465 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:30:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:59,539 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-22 05:30:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:59,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:30:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:59,541 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:30:59,542 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 05:30:59,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 05:30:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-22 05:30:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:30:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 05:30:59,551 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-22 05:30:59,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:59,552 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 05:30:59,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:59,552 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 05:30:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:30:59,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:59,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:59,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:30:59,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:59,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:59,555 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-22 05:30:59,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:59,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26916083] [2020-12-22 05:30:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:59,573 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:59,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282568052] [2020-12-22 05:30:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:59,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:30:59,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:59,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26916083] [2020-12-22 05:30:59,709 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:59,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282568052] [2020-12-22 05:30:59,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:59,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:30:59,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905046082] [2020-12-22 05:30:59,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:30:59,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:59,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:30:59,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:59,712 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-22 05:30:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:59,885 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-22 05:30:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:59,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:30:59,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:59,888 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:30:59,888 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:30:59,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:30:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:30:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-22 05:30:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 05:30:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-22 05:30:59,913 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-22 05:30:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:59,914 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-22 05:30:59,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:30:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-22 05:30:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:30:59,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:59,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:00,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:00,129 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:00,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:00,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2020-12-22 05:31:00,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:00,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236775333] [2020-12-22 05:31:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:00,158 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:00,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837897553] [2020-12-22 05:31:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:00,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:31:00,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:00,343 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 05:31:00,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236775333] [2020-12-22 05:31:00,345 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:00,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837897553] [2020-12-22 05:31:00,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:00,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:31:00,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052189778] [2020-12-22 05:31:00,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:00,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:00,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:00,354 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-22 05:31:00,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:00,449 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-22 05:31:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:31:00,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:31:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:00,451 INFO L225 Difference]: With dead ends: 66 [2020-12-22 05:31:00,451 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:31:00,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:31:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-22 05:31:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 05:31:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-22 05:31:00,463 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-22 05:31:00,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:00,464 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-22 05:31:00,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-22 05:31:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:31:00,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:00,465 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:00,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:00,679 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:00,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2020-12-22 05:31:00,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:00,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450093027] [2020-12-22 05:31:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:00,696 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:00,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920397031] [2020-12-22 05:31:00,697 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 05:31:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:00,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:31:00,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:00,814 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 05:31:00,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450093027] [2020-12-22 05:31:00,815 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:00,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920397031] [2020-12-22 05:31:00,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:00,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:31:00,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905457434] [2020-12-22 05:31:00,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:00,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:00,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:00,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:00,818 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-22 05:31:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:00,851 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-22 05:31:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:00,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:31:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:00,852 INFO L225 Difference]: With dead ends: 78 [2020-12-22 05:31:00,852 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 05:31:00,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 05:31:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 05:31:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 05:31:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-22 05:31:00,861 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-22 05:31:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:00,861 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-22 05:31:00,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-22 05:31:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:31:00,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:00,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:01,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:01,077 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2020-12-22 05:31:01,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:01,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899720035] [2020-12-22 05:31:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:01,092 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:01,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027257496] [2020-12-22 05:31:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:01,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:01,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:01,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899720035] [2020-12-22 05:31:01,264 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:01,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027257496] [2020-12-22 05:31:01,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:01,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:01,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172501151] [2020-12-22 05:31:01,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:01,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:01,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:01,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:01,267 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-22 05:31:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:01,494 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-22 05:31:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:31:01,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 05:31:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:01,495 INFO L225 Difference]: With dead ends: 117 [2020-12-22 05:31:01,496 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 05:31:01,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 05:31:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-22 05:31:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:31:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-22 05:31:01,505 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-22 05:31:01,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:01,506 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-22 05:31:01,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:01,506 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-22 05:31:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:31:01,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:01,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:01,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:31:01,723 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:01,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2020-12-22 05:31:01,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:01,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568651732] [2020-12-22 05:31:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:01,737 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:01,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213747473] [2020-12-22 05:31:01,738 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 05:31:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:01,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:31:01,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:01,874 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 05:31:01,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568651732] [2020-12-22 05:31:01,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:01,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213747473] [2020-12-22 05:31:01,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:01,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:31:01,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749951405] [2020-12-22 05:31:01,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:01,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:01,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:01,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:01,879 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-22 05:31:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:01,912 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-22 05:31:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:01,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-22 05:31:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:01,913 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:31:01,913 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 05:31:01,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 05:31:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-22 05:31:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:31:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-22 05:31:01,926 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-22 05:31:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:01,926 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-22 05:31:01,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-22 05:31:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:31:01,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:01,929 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:02,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:02,143 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:02,144 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2020-12-22 05:31:02,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:02,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001876450] [2020-12-22 05:31:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:02,159 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:02,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771916742] [2020-12-22 05:31:02,159 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 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 05:31:02,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:31:02,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:02,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:31:02,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 05:31:02,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001876450] [2020-12-22 05:31:02,243 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:02,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771916742] [2020-12-22 05:31:02,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:02,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:31:02,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7932048] [2020-12-22 05:31:02,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:02,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:02,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:02,246 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-22 05:31:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:02,304 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-22 05:31:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:02,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 05:31:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:02,306 INFO L225 Difference]: With dead ends: 99 [2020-12-22 05:31:02,306 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 05:31:02,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 05:31:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-22 05:31:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 05:31:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-22 05:31:02,315 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-22 05:31:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:02,315 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-22 05:31:02,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-22 05:31:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:31:02,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:02,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-22 05:31:02,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:02,535 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:02,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2020-12-22 05:31:02,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:02,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858926002] [2020-12-22 05:31:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:02,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:02,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061195899] [2020-12-22 05:31:02,549 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 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 05:31:02,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:02,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:02,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:31:02,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:02,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858926002] [2020-12-22 05:31:02,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:02,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061195899] [2020-12-22 05:31:02,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:02,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:02,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276794075] [2020-12-22 05:31:02,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:02,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:02,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:02,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:02,791 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-22 05:31:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:03,020 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-22 05:31:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:31:03,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-22 05:31:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:03,022 INFO L225 Difference]: With dead ends: 138 [2020-12-22 05:31:03,022 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 05:31:03,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 05:31:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-22 05:31:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:31:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-22 05:31:03,035 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-22 05:31:03,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:03,035 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-22 05:31:03,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-22 05:31:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:31:03,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:03,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:03,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:31:03,251 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2020-12-22 05:31:03,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:03,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717973010] [2020-12-22 05:31:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:03,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:03,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706999822] [2020-12-22 05:31:03,265 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 05:31:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:03,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:31:03,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:03,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717973010] [2020-12-22 05:31:03,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:03,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706999822] [2020-12-22 05:31:03,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:03,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:31:03,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599604925] [2020-12-22 05:31:03,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:03,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:03,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:03,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:03,412 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-22 05:31:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:03,460 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-22 05:31:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:03,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:31:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:03,461 INFO L225 Difference]: With dead ends: 100 [2020-12-22 05:31:03,462 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 05:31:03,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:03,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 05:31:03,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-22 05:31:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:31:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-22 05:31:03,472 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-22 05:31:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:03,473 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-22 05:31:03,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-22 05:31:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:31:03,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:03,474 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] [2020-12-22 05:31:03,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:03,685 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:03,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2020-12-22 05:31:03,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:03,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735419396] [2020-12-22 05:31:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:03,704 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:03,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195721198] [2020-12-22 05:31:03,705 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 05:31:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:03,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:31:03,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:03,909 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 05:31:03,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735419396] [2020-12-22 05:31:03,910 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:03,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195721198] [2020-12-22 05:31:03,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:03,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:03,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311926557] [2020-12-22 05:31:03,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:03,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:03,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:03,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:03,916 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-22 05:31:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:04,101 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-22 05:31:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:04,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 05:31:04,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:04,104 INFO L225 Difference]: With dead ends: 114 [2020-12-22 05:31:04,104 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 05:31:04,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 05:31:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-22 05:31:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:31:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-22 05:31:04,118 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-22 05:31:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:04,118 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-22 05:31:04,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-22 05:31:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 05:31:04,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:04,119 INFO L422 BasicCegarLoop]: trace histogram [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 05:31:04,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:04,333 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:04,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:04,334 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2020-12-22 05:31:04,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:04,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411105110] [2020-12-22 05:31:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:04,344 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:04,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640381736] [2020-12-22 05:31:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:04,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:31:04,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:04,487 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 05:31:04,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411105110] [2020-12-22 05:31:04,488 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:04,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640381736] [2020-12-22 05:31:04,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:04,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:31:04,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320836955] [2020-12-22 05:31:04,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:04,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:04,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:04,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:04,490 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-22 05:31:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:04,533 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-22 05:31:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:04,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-22 05:31:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:04,535 INFO L225 Difference]: With dead ends: 112 [2020-12-22 05:31:04,535 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 05:31:04,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:04,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 05:31:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-22 05:31:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 05:31:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-22 05:31:04,544 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-22 05:31:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:04,544 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-22 05:31:04,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-22 05:31:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:31:04,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:04,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:04,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:31:04,761 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:04,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:04,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2020-12-22 05:31:04,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:04,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947935844] [2020-12-22 05:31:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:04,773 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:04,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554819101] [2020-12-22 05:31:04,773 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 05:31:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:04,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:31:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:04,954 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 05:31:04,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947935844] [2020-12-22 05:31:04,955 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:04,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554819101] [2020-12-22 05:31:04,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:04,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:04,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96014248] [2020-12-22 05:31:04,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:04,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:04,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:04,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:04,957 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-22 05:31:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:05,121 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-22 05:31:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:05,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:31:05,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:05,122 INFO L225 Difference]: With dead ends: 130 [2020-12-22 05:31:05,122 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 05:31:05,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:05,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 05:31:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-22 05:31:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 05:31:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-22 05:31:05,130 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-22 05:31:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:05,130 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-22 05:31:05,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-22 05:31:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:31:05,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:05,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-22 05:31:05,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:31:05,348 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2020-12-22 05:31:05,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:05,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337235583] [2020-12-22 05:31:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:05,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:05,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215032599] [2020-12-22 05:31:05,360 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 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 05:31:05,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:31:05,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:31:05,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 05:31:05,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337235583] [2020-12-22 05:31:05,602 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:05,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215032599] [2020-12-22 05:31:05,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:05,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:05,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288151405] [2020-12-22 05:31:05,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:05,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:05,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:05,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:05,605 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-12-22 05:31:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:05,824 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-12-22 05:31:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:31:05,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-22 05:31:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:05,826 INFO L225 Difference]: With dead ends: 127 [2020-12-22 05:31:05,826 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 05:31:05,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 05:31:05,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-12-22 05:31:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 05:31:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2020-12-22 05:31:05,837 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 34 [2020-12-22 05:31:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:05,838 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2020-12-22 05:31:05,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2020-12-22 05:31:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:31:05,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:05,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:06,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:31:06,054 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:06,055 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2020-12-22 05:31:06,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:06,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744299110] [2020-12-22 05:31:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:06,065 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:06,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884168161] [2020-12-22 05:31:06,065 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 05:31:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:06,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:31:06,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:06,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744299110] [2020-12-22 05:31:06,237 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:06,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884168161] [2020-12-22 05:31:06,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:06,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:06,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314329922] [2020-12-22 05:31:06,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:06,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:06,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:06,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:06,239 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 8 states. [2020-12-22 05:31:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:06,377 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-12-22 05:31:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:06,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-22 05:31:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:06,378 INFO L225 Difference]: With dead ends: 100 [2020-12-22 05:31:06,378 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 05:31:06,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:06,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 05:31:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-22 05:31:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 05:31:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-22 05:31:06,387 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 34 [2020-12-22 05:31:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:06,388 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-22 05:31:06,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-22 05:31:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:31:06,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:06,388 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:06,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:06,603 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2020-12-22 05:31:06,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:06,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803917459] [2020-12-22 05:31:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:06,614 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:06,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807344958] [2020-12-22 05:31:06,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:31:06,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:06,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:06,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:31:06,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:06,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803917459] [2020-12-22 05:31:06,786 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:06,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807344958] [2020-12-22 05:31:06,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:06,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:31:06,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984661571] [2020-12-22 05:31:06,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:06,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:06,789 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 7 states. [2020-12-22 05:31:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:06,844 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-12-22 05:31:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:31:06,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-22 05:31:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:06,846 INFO L225 Difference]: With dead ends: 93 [2020-12-22 05:31:06,846 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 05:31:06,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 05:31:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-22 05:31:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 05:31:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2020-12-22 05:31:06,857 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 35 [2020-12-22 05:31:06,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:06,857 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2020-12-22 05:31:06,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2020-12-22 05:31:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:31:06,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:06,858 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] [2020-12-22 05:31:07,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:31:07,072 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2020-12-22 05:31:07,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:07,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301031624] [2020-12-22 05:31:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:07,087 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:07,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031162423] [2020-12-22 05:31:07,088 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 05:31:07,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:07,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:07,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:31:07,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:07,298 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 05:31:07,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301031624] [2020-12-22 05:31:07,299 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:07,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031162423] [2020-12-22 05:31:07,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:07,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:07,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014669138] [2020-12-22 05:31:07,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:07,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:07,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:07,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:07,301 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2020-12-22 05:31:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:07,572 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-12-22 05:31:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:31:07,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-22 05:31:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:07,573 INFO L225 Difference]: With dead ends: 157 [2020-12-22 05:31:07,573 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 05:31:07,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:07,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 05:31:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-12-22 05:31:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:31:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-12-22 05:31:07,583 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 37 [2020-12-22 05:31:07,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:07,584 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-12-22 05:31:07,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-12-22 05:31:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:31:07,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:07,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:07,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:31:07,799 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2020-12-22 05:31:07,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:07,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349294295] [2020-12-22 05:31:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:07,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:07,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399115746] [2020-12-22 05:31:07,813 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 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 05:31:07,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:07,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:07,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:31:07,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:07,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349294295] [2020-12-22 05:31:07,937 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:07,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399115746] [2020-12-22 05:31:07,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:07,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:07,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564066069] [2020-12-22 05:31:07,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:07,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:07,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:07,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:07,940 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 8 states. [2020-12-22 05:31:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:07,985 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-22 05:31:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:07,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-22 05:31:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:07,986 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:31:07,987 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 05:31:07,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 05:31:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-12-22 05:31:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 05:31:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-12-22 05:31:08,001 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 38 [2020-12-22 05:31:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:08,001 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-12-22 05:31:08,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-12-22 05:31:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 05:31:08,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:08,002 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:08,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:08,216 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:08,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:08,217 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2020-12-22 05:31:08,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:08,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665744638] [2020-12-22 05:31:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:08,226 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:08,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076188978] [2020-12-22 05:31:08,226 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:08,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-22 05:31:08,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:08,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:31:08,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665744638] [2020-12-22 05:31:08,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:08,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076188978] [2020-12-22 05:31:08,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:08,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:08,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220609631] [2020-12-22 05:31:08,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:08,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:08,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:08,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:08,394 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2020-12-22 05:31:08,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:08,467 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-22 05:31:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:31:08,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-22 05:31:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:08,469 INFO L225 Difference]: With dead ends: 117 [2020-12-22 05:31:08,469 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:31:08,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:31:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:31:08,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-22 05:31:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 05:31:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2020-12-22 05:31:08,479 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 43 [2020-12-22 05:31:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:08,479 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2020-12-22 05:31:08,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2020-12-22 05:31:08,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:31:08,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:08,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-22 05:31:08,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:08,695 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2020-12-22 05:31:08,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:08,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960359036] [2020-12-22 05:31:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:08,705 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:08,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409333827] [2020-12-22 05:31:08,705 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:08,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:31:08,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:08,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 05:31:08,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:08,952 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:31:08,971 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:08,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:31:09,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:09,023 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:09,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:09,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:09,040 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:09,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:09,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:31:09,071 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:09,074 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:09,079 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:09,087 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:09,091 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 05:31:09,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960359036] [2020-12-22 05:31:09,513 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:09,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409333827] [2020-12-22 05:31:09,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:09,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:31:09,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592450118] [2020-12-22 05:31:09,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:09,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:09,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:09,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:09,515 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 10 states. [2020-12-22 05:31:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:09,739 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-12-22 05:31:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:09,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-22 05:31:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:09,740 INFO L225 Difference]: With dead ends: 113 [2020-12-22 05:31:09,740 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:31:09,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:31:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-12-22 05:31:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 05:31:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-22 05:31:09,753 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2020-12-22 05:31:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:09,753 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-22 05:31:09,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-22 05:31:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:31:09,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:09,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:09,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:09,967 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:09,968 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2020-12-22 05:31:09,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:09,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881955593] [2020-12-22 05:31:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:09,976 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:09,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045764019] [2020-12-22 05:31:09,976 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:10,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:31:10,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:10,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:31:10,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:10,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881955593] [2020-12-22 05:31:10,183 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:10,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045764019] [2020-12-22 05:31:10,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:10,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:10,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118079964] [2020-12-22 05:31:10,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:10,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:10,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:10,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:10,186 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2020-12-22 05:31:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:10,245 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-12-22 05:31:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:31:10,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-22 05:31:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:10,247 INFO L225 Difference]: With dead ends: 127 [2020-12-22 05:31:10,247 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 05:31:10,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:10,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 05:31:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-12-22 05:31:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 05:31:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-12-22 05:31:10,260 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2020-12-22 05:31:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:10,260 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-12-22 05:31:10,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-12-22 05:31:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:31:10,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:10,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:10,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:31:10,475 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:10,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:10,475 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2020-12-22 05:31:10,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:10,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298063988] [2020-12-22 05:31:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:10,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:10,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39170100] [2020-12-22 05:31:10,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:10,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:31:10,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:10,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:10,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-22 05:31:10,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298063988] [2020-12-22 05:31:10,700 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:10,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39170100] [2020-12-22 05:31:10,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:10,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:31:10,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189745251] [2020-12-22 05:31:10,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:31:10,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:10,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:31:10,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:10,702 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2020-12-22 05:31:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:11,100 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2020-12-22 05:31:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:11,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-22 05:31:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:11,102 INFO L225 Difference]: With dead ends: 132 [2020-12-22 05:31:11,102 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 05:31:11,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:31:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 05:31:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-12-22 05:31:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 05:31:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-12-22 05:31:11,114 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2020-12-22 05:31:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:11,114 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-12-22 05:31:11,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:31:11,114 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-12-22 05:31:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:31:11,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:11,115 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:11,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 05:31:11,331 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:11,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:11,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2020-12-22 05:31:11,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:11,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513026210] [2020-12-22 05:31:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:11,339 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:11,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741400001] [2020-12-22 05:31:11,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:11,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:11,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:11,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:31:11,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:11,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513026210] [2020-12-22 05:31:11,514 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:11,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741400001] [2020-12-22 05:31:11,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:11,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:11,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124915610] [2020-12-22 05:31:11,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:11,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:11,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:11,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:11,516 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2020-12-22 05:31:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:11,600 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-22 05:31:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:31:11,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-22 05:31:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:11,601 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:31:11,601 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 05:31:11,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:31:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 05:31:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-22 05:31:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 05:31:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-12-22 05:31:11,613 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2020-12-22 05:31:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:11,613 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-12-22 05:31:11,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-12-22 05:31:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:31:11,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:11,614 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:11,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:11,829 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:11,829 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2020-12-22 05:31:11,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:11,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269679773] [2020-12-22 05:31:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:11,838 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:11,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808886937] [2020-12-22 05:31:11,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:11,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:11,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:11,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:31:11,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:12,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269679773] [2020-12-22 05:31:12,031 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:12,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808886937] [2020-12-22 05:31:12,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:12,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:12,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813006534] [2020-12-22 05:31:12,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:12,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:12,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:12,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:12,033 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2020-12-22 05:31:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:12,106 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-22 05:31:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:31:12,106 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-22 05:31:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:12,107 INFO L225 Difference]: With dead ends: 141 [2020-12-22 05:31:12,108 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 05:31:12,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 05:31:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-12-22 05:31:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 05:31:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2020-12-22 05:31:12,121 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2020-12-22 05:31:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:12,122 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2020-12-22 05:31:12,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2020-12-22 05:31:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:31:12,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:12,123 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:12,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 05:31:12,336 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2020-12-22 05:31:12,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:12,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297734049] [2020-12-22 05:31:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:12,344 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:12,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241576829] [2020-12-22 05:31:12,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:12,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-22 05:31:12,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:12,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:31:12,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:12,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297734049] [2020-12-22 05:31:12,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:12,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241576829] [2020-12-22 05:31:12,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:12,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:12,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129569062] [2020-12-22 05:31:12,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:12,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:12,531 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2020-12-22 05:31:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:12,632 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2020-12-22 05:31:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:31:12,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-22 05:31:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:12,633 INFO L225 Difference]: With dead ends: 140 [2020-12-22 05:31:12,634 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 05:31:12,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:31:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 05:31:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-22 05:31:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 05:31:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-22 05:31:12,647 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2020-12-22 05:31:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:12,648 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-22 05:31:12,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-22 05:31:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:31:12,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:12,649 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:12,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:12,863 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:12,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:12,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2020-12-22 05:31:12,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:12,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335026476] [2020-12-22 05:31:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:12,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:12,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128683162] [2020-12-22 05:31:12,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:12,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 05:31:12,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:12,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:31:12,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:13,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335026476] [2020-12-22 05:31:13,145 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:13,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128683162] [2020-12-22 05:31:13,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:13,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:31:13,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971576023] [2020-12-22 05:31:13,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:31:13,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:13,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:31:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:13,146 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2020-12-22 05:31:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:13,246 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2020-12-22 05:31:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:31:13,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-22 05:31:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:13,248 INFO L225 Difference]: With dead ends: 163 [2020-12-22 05:31:13,248 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 05:31:13,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:31:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 05:31:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-12-22 05:31:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 05:31:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-12-22 05:31:13,263 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2020-12-22 05:31:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:13,264 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-12-22 05:31:13,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:31:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-12-22 05:31:13,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:31:13,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:13,265 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:13,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:31:13,479 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:13,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2020-12-22 05:31:13,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:13,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012352895] [2020-12-22 05:31:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:13,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:13,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759786312] [2020-12-22 05:31:13,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:13,583 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-22 05:31:13,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:13,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:31:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:13,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012352895] [2020-12-22 05:31:13,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:13,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759786312] [2020-12-22 05:31:13,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:13,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:31:13,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438418964] [2020-12-22 05:31:13,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:31:13,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:13,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:31:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:31:13,724 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2020-12-22 05:31:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:13,834 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2020-12-22 05:31:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:31:13,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-22 05:31:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:13,836 INFO L225 Difference]: With dead ends: 187 [2020-12-22 05:31:13,836 INFO L226 Difference]: Without dead ends: 175 [2020-12-22 05:31:13,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:31:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-22 05:31:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-12-22 05:31:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 05:31:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2020-12-22 05:31:13,852 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2020-12-22 05:31:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:13,853 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2020-12-22 05:31:13,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:31:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2020-12-22 05:31:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:31:13,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:13,854 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:14,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 05:31:14,069 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:14,070 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2020-12-22 05:31:14,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:14,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908882038] [2020-12-22 05:31:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:14,078 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:14,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157267181] [2020-12-22 05:31:14,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:14,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:31:14,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:14,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908882038] [2020-12-22 05:31:14,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:14,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157267181] [2020-12-22 05:31:14,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:14,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:31:14,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594871117] [2020-12-22 05:31:14,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:31:14,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:14,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:31:14,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:14,356 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2020-12-22 05:31:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:14,509 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2020-12-22 05:31:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 05:31:14,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-22 05:31:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:14,512 INFO L225 Difference]: With dead ends: 209 [2020-12-22 05:31:14,512 INFO L226 Difference]: Without dead ends: 197 [2020-12-22 05:31:14,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:31:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-22 05:31:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-12-22 05:31:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-22 05:31:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2020-12-22 05:31:14,533 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2020-12-22 05:31:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:14,534 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2020-12-22 05:31:14,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:31:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2020-12-22 05:31:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:31:14,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:14,535 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:14,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 05:31:14,750 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:14,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2020-12-22 05:31:14,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:14,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443113343] [2020-12-22 05:31:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:14,760 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:14,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261299466] [2020-12-22 05:31:14,761 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:14,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:14,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:14,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:31:14,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 88 proven. 43 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-12-22 05:31:14,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443113343] [2020-12-22 05:31:14,945 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:14,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261299466] [2020-12-22 05:31:14,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:14,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:31:14,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441939129] [2020-12-22 05:31:14,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:14,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:14,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:14,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:14,947 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 5 states. [2020-12-22 05:31:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:15,009 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2020-12-22 05:31:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:15,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 05:31:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:15,011 INFO L225 Difference]: With dead ends: 241 [2020-12-22 05:31:15,011 INFO L226 Difference]: Without dead ends: 175 [2020-12-22 05:31:15,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-22 05:31:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-12-22 05:31:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-22 05:31:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2020-12-22 05:31:15,029 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 80 [2020-12-22 05:31:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:15,029 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2020-12-22 05:31:15,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2020-12-22 05:31:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 05:31:15,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:15,030 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:15,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:15,244 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:15,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1453108407, now seen corresponding path program 9 times [2020-12-22 05:31:15,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:15,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379786635] [2020-12-22 05:31:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:15,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:15,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504213799] [2020-12-22 05:31:15,255 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:15,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-22 05:31:15,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:15,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 05:31:15,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 87 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 05:31:15,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379786635] [2020-12-22 05:31:15,856 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:15,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504213799] [2020-12-22 05:31:15,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:15,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:31:15,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550930324] [2020-12-22 05:31:15,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:31:15,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:15,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:31:15,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:15,857 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand 13 states. [2020-12-22 05:31:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:16,179 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2020-12-22 05:31:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:31:16,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-12-22 05:31:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:16,181 INFO L225 Difference]: With dead ends: 252 [2020-12-22 05:31:16,181 INFO L226 Difference]: Without dead ends: 161 [2020-12-22 05:31:16,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:31:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-22 05:31:16,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-12-22 05:31:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-22 05:31:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 178 transitions. [2020-12-22 05:31:16,198 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 178 transitions. Word has length 81 [2020-12-22 05:31:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:16,199 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 178 transitions. [2020-12-22 05:31:16,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:31:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 178 transitions. [2020-12-22 05:31:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 05:31:16,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:16,200 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:16,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 05:31:16,414 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash -861698128, now seen corresponding path program 10 times [2020-12-22 05:31:16,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:16,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152736274] [2020-12-22 05:31:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:16,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:16,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119404782] [2020-12-22 05:31:16,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:17,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:17,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:17,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:31:17,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:17,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152736274] [2020-12-22 05:31:17,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:17,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119404782] [2020-12-22 05:31:17,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:17,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:17,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062789495] [2020-12-22 05:31:17,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:17,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:17,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:17,133 INFO L87 Difference]: Start difference. First operand 161 states and 178 transitions. Second operand 7 states. [2020-12-22 05:31:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:17,242 INFO L93 Difference]: Finished difference Result 232 states and 257 transitions. [2020-12-22 05:31:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:31:17,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 05:31:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:17,244 INFO L225 Difference]: With dead ends: 232 [2020-12-22 05:31:17,244 INFO L226 Difference]: Without dead ends: 147 [2020-12-22 05:31:17,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-22 05:31:17,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-12-22 05:31:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-22 05:31:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2020-12-22 05:31:17,259 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 82 [2020-12-22 05:31:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:17,260 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2020-12-22 05:31:17,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2020-12-22 05:31:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:31:17,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:17,261 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:17,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:17,466 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1395374203, now seen corresponding path program 6 times [2020-12-22 05:31:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:17,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806053531] [2020-12-22 05:31:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:17,490 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:17,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541752577] [2020-12-22 05:31:17,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:17,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-22 05:31:17,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:17,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:31:17,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:17,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806053531] [2020-12-22 05:31:17,768 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:17,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541752577] [2020-12-22 05:31:17,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:17,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:31:17,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753079181] [2020-12-22 05:31:17,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:31:17,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:31:17,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:17,770 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand 13 states. [2020-12-22 05:31:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:17,937 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2020-12-22 05:31:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 05:31:17,937 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-12-22 05:31:17,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:17,938 INFO L225 Difference]: With dead ends: 157 [2020-12-22 05:31:17,938 INFO L226 Difference]: Without dead ends: 149 [2020-12-22 05:31:17,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:31:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-22 05:31:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-12-22 05:31:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-22 05:31:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-12-22 05:31:17,955 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 83 [2020-12-22 05:31:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:17,955 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-12-22 05:31:17,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:31:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-12-22 05:31:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:31:17,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:17,956 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:18,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 05:31:18,170 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash -219254285, now seen corresponding path program 11 times [2020-12-22 05:31:18,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:18,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033134501] [2020-12-22 05:31:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:18,180 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:18,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372525089] [2020-12-22 05:31:18,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:19,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-22 05:31:19,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-22 05:31:19,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:31:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 05:31:19,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:31:19,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 05:31:19,554 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:31:19,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 05:31:19,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:31:19 BoogieIcfgContainer [2020-12-22 05:31:19,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:31:19,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:31:19,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:31:19,845 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:31:19,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:58" (3/4) ... [2020-12-22 05:31:19,847 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 05:31:19,964 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_unwindbound10.c-witness.graphml [2020-12-22 05:31:19,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:31:19,970 INFO L168 Benchmark]: Toolchain (without parser) took 22607.60 ms. Allocated memory was 168.8 MB in the beginning and 330.3 MB in the end (delta: 161.5 MB). Free memory was 143.6 MB in the beginning and 263.9 MB in the end (delta: -120.3 MB). Peak memory consumption was 41.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:19,970 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 168.8 MB. Free memory is still 141.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:31:19,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.52 ms. Allocated memory is still 168.8 MB. Free memory was 143.4 MB in the beginning and 133.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:19,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.06 ms. Allocated memory is still 168.8 MB. Free memory was 133.5 MB in the beginning and 131.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:19,972 INFO L168 Benchmark]: Boogie Preprocessor took 59.93 ms. Allocated memory is still 168.8 MB. Free memory was 131.9 MB in the beginning and 130.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:19,972 INFO L168 Benchmark]: RCFGBuilder took 523.76 ms. Allocated memory is still 168.8 MB. Free memory was 130.7 MB in the beginning and 149.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:19,973 INFO L168 Benchmark]: TraceAbstraction took 21463.36 ms. Allocated memory was 168.8 MB in the beginning and 330.3 MB in the end (delta: 161.5 MB). Free memory was 149.2 MB in the beginning and 269.6 MB in the end (delta: -120.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:19,973 INFO L168 Benchmark]: Witness Printer took 120.16 ms. Allocated memory is still 330.3 MB. Free memory was 269.6 MB in the beginning and 263.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:19,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 168.8 MB. Free memory is still 141.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.52 ms. Allocated memory is still 168.8 MB. Free memory was 143.4 MB in the beginning and 133.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 62.06 ms. Allocated memory is still 168.8 MB. Free memory was 133.5 MB in the beginning and 131.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.93 ms. Allocated memory is still 168.8 MB. Free memory was 131.9 MB in the beginning and 130.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 523.76 ms. Allocated memory is still 168.8 MB. Free memory was 130.7 MB in the beginning and 149.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21463.36 ms. Allocated memory was 168.8 MB in the beginning and 330.3 MB in the end (delta: 161.5 MB). Free memory was 149.2 MB in the beginning and 269.6 MB in the end (delta: -120.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. * Witness Printer took 120.16 ms. Allocated memory is still 330.3 MB. Free memory was 269.6 MB in the beginning and 263.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=4] [L34] EXPR counter++ VAL [counter=5] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=5] [L34] EXPR counter++ VAL [counter=6] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L38] COND TRUE !(r >= d) VAL [counter=6] [L44] EXPR counter++ VAL [counter=7] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=7] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=7] [L44] EXPR counter++ VAL [counter=8] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=8] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=8] [L44] EXPR counter++ VAL [counter=9] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=9] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=9] [L44] EXPR counter++ VAL [counter=10] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=10] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=10] [L44] EXPR counter++ VAL [counter=11] [L44] COND FALSE !(counter++<10) [L15] COND TRUE !(cond) VAL [counter=11] [L17] reach_error() VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.3s, OverallIterations: 34, TraceHistogramMax: 10, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 980 SDtfs, 1536 SDslu, 3555 SDs, 0 SdLazy, 2060 SolverSat, 528 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1372 GetRequests, 1086 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 33 MinimizatonAttempts, 195 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1404 NumberOfCodeBlocks, 1327 NumberOfCodeBlocksAsserted, 85 NumberOfCheckSat, 1288 ConstructedInterpolants, 0 QuantifiedInterpolants, 282245 SizeOfPredicates, 189 NumberOfNonLiveVariables, 5066 ConjunctsInSsa, 599 ConjunctsInUnsatCore, 33 InterpolantComputations, 6 PerfectInterpolantSequences, 326/1818 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...