/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/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:02:31,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:02:31,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:02:31,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:02:31,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:02:31,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:02:31,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:02:31,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:02:31,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:02:31,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:02:31,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:02:31,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:02:31,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:02:31,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:02:31,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:02:31,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:02:31,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:02:31,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:02:31,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:02:31,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:02:31,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:02:31,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:02:31,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:02:31,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:02:31,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:02:31,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:02:31,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:02:31,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:02:31,743 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:02:31,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:02:31,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:02:31,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:02:31,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:02:31,770 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:02:31,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:02:31,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:02:31,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:02:31,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:02:31,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:02:31,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:02:31,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:02:31,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:02:31,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:02:31,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:02:31,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:02:31,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:02:31,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:02:31,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:02:31,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:02:31,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:02:31,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:02:31,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:02:31,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:02:31,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:02:31,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:02:32,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:02:32,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:02:32,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:02:32,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:02:32,181 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:02:32,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:02:32,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872ebe151/54e7124cc35a4e04a643ecacc7c649d9/FLAG2f05336f0 [2020-12-22 10:02:33,238 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:02:33,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:02:33,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872ebe151/54e7124cc35a4e04a643ecacc7c649d9/FLAG2f05336f0 [2020-12-22 10:02:33,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872ebe151/54e7124cc35a4e04a643ecacc7c649d9 [2020-12-22 10:02:33,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:02:33,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:02:33,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:02:33,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:02:33,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:02:33,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:33" (1/1) ... [2020-12-22 10:02:33,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108859cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:33, skipping insertion in model container [2020-12-22 10:02:33,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:33" (1/1) ... [2020-12-22 10:02:33,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:02:33,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:02:34,010 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/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15651,15664] [2020-12-22 10:02:34,068 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/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[22469,22482] [2020-12-22 10:02:35,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:02:35,095 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:02:35,183 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/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15651,15664] [2020-12-22 10:02:35,202 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/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[22469,22482] [2020-12-22 10:02:35,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:02:36,041 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:02:36,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36 WrapperNode [2020-12-22 10:02:36,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:02:36,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:02:36,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:02:36,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:02:36,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:02:36,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:02:36,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:02:36,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:02:36,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:36,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (1/1) ... [2020-12-22 10:02:37,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:02:37,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:02:37,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:02:37,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:02:37,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (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 10:02:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:02:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:02:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:02:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:02:42,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:02:42,438 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:02:42,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:42 BoogieIcfgContainer [2020-12-22 10:02:42,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:02:42,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:02:42,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:02:42,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:02:42,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:02:33" (1/3) ... [2020-12-22 10:02:42,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19608e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:42, skipping insertion in model container [2020-12-22 10:02:42,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:36" (2/3) ... [2020-12-22 10:02:42,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d19608e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:02:42, skipping insertion in model container [2020-12-22 10:02:42,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:02:42" (3/3) ... [2020-12-22 10:02:42,461 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:02:42,468 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:02:42,474 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:02:42,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:02:42,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:02:42,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:02:42,539 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:02:42,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:02:42,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:02:42,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:02:42,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:02:42,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:02:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:02:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:02:42,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:42,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:42,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:42,592 INFO L82 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2020-12-22 10:02:42,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:42,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219400538] [2020-12-22 10:02:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:42,855 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 10:02:42,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219400538] [2020-12-22 10:02:42,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:42,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:02:42,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755238293] [2020-12-22 10:02:42,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:02:42,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:42,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:02:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:02:42,885 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 2 states. [2020-12-22 10:02:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:42,984 INFO L93 Difference]: Finished difference Result 1806 states and 3420 transitions. [2020-12-22 10:02:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:02:42,986 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2020-12-22 10:02:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:43,021 INFO L225 Difference]: With dead ends: 1806 [2020-12-22 10:02:43,022 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:02:43,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:02:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:02:43,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:02:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:02:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1622 transitions. [2020-12-22 10:02:43,160 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1622 transitions. Word has length 38 [2020-12-22 10:02:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:43,161 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1622 transitions. [2020-12-22 10:02:43,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:02:43,161 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1622 transitions. [2020-12-22 10:02:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:02:43,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:43,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:43,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:02:43,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:02:43,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:43,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12335754] [2020-12-22 10:02:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:43,339 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 10:02:43,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12335754] [2020-12-22 10:02:43,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:43,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:02:43,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796680940] [2020-12-22 10:02:43,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:02:43,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:02:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:02:43,345 INFO L87 Difference]: Start difference. First operand 861 states and 1622 transitions. Second operand 5 states. [2020-12-22 10:02:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:43,501 INFO L93 Difference]: Finished difference Result 926 states and 1723 transitions. [2020-12-22 10:02:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:02:43,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:02:43,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:43,507 INFO L225 Difference]: With dead ends: 926 [2020-12-22 10:02:43,507 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:02:43,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:02:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:02:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:02:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:02:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1582 transitions. [2020-12-22 10:02:43,543 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1582 transitions. Word has length 38 [2020-12-22 10:02:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:43,544 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1582 transitions. [2020-12-22 10:02:43,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:02:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1582 transitions. [2020-12-22 10:02:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 10:02:43,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:43,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:43,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:02:43,555 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:43,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:43,558 INFO L82 PathProgramCache]: Analyzing trace with hash -196717918, now seen corresponding path program 1 times [2020-12-22 10:02:43,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:43,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458643882] [2020-12-22 10:02:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:43,867 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 10:02:43,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458643882] [2020-12-22 10:02:43,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:43,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:43,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156687397] [2020-12-22 10:02:43,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:02:43,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:43,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:02:43,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:02:43,882 INFO L87 Difference]: Start difference. First operand 861 states and 1582 transitions. Second operand 4 states. [2020-12-22 10:02:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:54,353 INFO L93 Difference]: Finished difference Result 3116 states and 5891 transitions. [2020-12-22 10:02:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:02:54,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 10:02:54,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:54,368 INFO L225 Difference]: With dead ends: 3116 [2020-12-22 10:02:54,369 INFO L226 Difference]: Without dead ends: 2363 [2020-12-22 10:02:54,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 10:02:54,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-12-22 10:02:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2020-12-22 10:02:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-12-22 10:02:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3558 transitions. [2020-12-22 10:02:54,429 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3558 transitions. Word has length 61 [2020-12-22 10:02:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:54,430 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 3558 transitions. [2020-12-22 10:02:54,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:02:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3558 transitions. [2020-12-22 10:02:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:02:54,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:54,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:54,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:02:54,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:02:54,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:54,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810019673] [2020-12-22 10:02:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:54,533 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 10:02:54,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810019673] [2020-12-22 10:02:54,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:54,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:54,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361259844] [2020-12-22 10:02:54,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:02:54,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:54,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:02:54,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:54,537 INFO L87 Difference]: Start difference. First operand 2363 states and 3558 transitions. Second operand 3 states. [2020-12-22 10:02:54,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:54,588 INFO L93 Difference]: Finished difference Result 2479 states and 3742 transitions. [2020-12-22 10:02:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:02:54,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:02:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:54,603 INFO L225 Difference]: With dead ends: 2479 [2020-12-22 10:02:54,603 INFO L226 Difference]: Without dead ends: 2418 [2020-12-22 10:02:54,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2020-12-22 10:02:54,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2416. [2020-12-22 10:02:54,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2416 states. [2020-12-22 10:02:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3643 transitions. [2020-12-22 10:02:54,668 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3643 transitions. Word has length 77 [2020-12-22 10:02:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:54,669 INFO L481 AbstractCegarLoop]: Abstraction has 2416 states and 3643 transitions. [2020-12-22 10:02:54,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:02:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3643 transitions. [2020-12-22 10:02:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:02:54,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:54,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:54,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:02:54,672 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:54,673 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:02:54,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:54,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055570659] [2020-12-22 10:02:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:54,830 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 10:02:54,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055570659] [2020-12-22 10:02:54,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:54,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:54,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717233425] [2020-12-22 10:02:54,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:02:54,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:54,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:02:54,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:54,834 INFO L87 Difference]: Start difference. First operand 2416 states and 3643 transitions. Second operand 3 states. [2020-12-22 10:02:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:54,890 INFO L93 Difference]: Finished difference Result 2632 states and 3987 transitions. [2020-12-22 10:02:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:02:54,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:02:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:54,904 INFO L225 Difference]: With dead ends: 2632 [2020-12-22 10:02:54,905 INFO L226 Difference]: Without dead ends: 2518 [2020-12-22 10:02:54,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-12-22 10:02:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2020-12-22 10:02:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-12-22 10:02:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3802 transitions. [2020-12-22 10:02:54,977 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3802 transitions. Word has length 77 [2020-12-22 10:02:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:54,979 INFO L481 AbstractCegarLoop]: Abstraction has 2516 states and 3802 transitions. [2020-12-22 10:02:54,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:02:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3802 transitions. [2020-12-22 10:02:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:02:54,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:54,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:54,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:02:54,981 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:54,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:54,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:02:54,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:54,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18667745] [2020-12-22 10:02:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:55,082 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 10:02:55,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18667745] [2020-12-22 10:02:55,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:55,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:55,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005596242] [2020-12-22 10:02:55,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:02:55,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:55,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:02:55,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:55,085 INFO L87 Difference]: Start difference. First operand 2516 states and 3802 transitions. Second operand 3 states. [2020-12-22 10:02:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:55,149 INFO L93 Difference]: Finished difference Result 2920 states and 4444 transitions. [2020-12-22 10:02:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:02:55,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:02:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:55,164 INFO L225 Difference]: With dead ends: 2920 [2020-12-22 10:02:55,165 INFO L226 Difference]: Without dead ends: 2706 [2020-12-22 10:02:55,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2020-12-22 10:02:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2704. [2020-12-22 10:02:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-12-22 10:02:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 4098 transitions. [2020-12-22 10:02:55,242 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 4098 transitions. Word has length 77 [2020-12-22 10:02:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:55,242 INFO L481 AbstractCegarLoop]: Abstraction has 2704 states and 4098 transitions. [2020-12-22 10:02:55,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:02:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 4098 transitions. [2020-12-22 10:02:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:02:55,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:55,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:55,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:02:55,244 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:55,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:02:55,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:55,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350674891] [2020-12-22 10:02:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:55,372 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 10:02:55,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350674891] [2020-12-22 10:02:55,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:55,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:55,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942536047] [2020-12-22 10:02:55,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:02:55,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:55,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:02:55,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:55,376 INFO L87 Difference]: Start difference. First operand 2704 states and 4098 transitions. Second operand 3 states. [2020-12-22 10:02:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:55,448 INFO L93 Difference]: Finished difference Result 3460 states and 5292 transitions. [2020-12-22 10:02:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:02:55,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:02:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:55,464 INFO L225 Difference]: With dead ends: 3460 [2020-12-22 10:02:55,464 INFO L226 Difference]: Without dead ends: 3058 [2020-12-22 10:02:55,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-12-22 10:02:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3056. [2020-12-22 10:02:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3056 states. [2020-12-22 10:02:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4646 transitions. [2020-12-22 10:02:55,557 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4646 transitions. Word has length 77 [2020-12-22 10:02:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:55,559 INFO L481 AbstractCegarLoop]: Abstraction has 3056 states and 4646 transitions. [2020-12-22 10:02:55,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:02:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4646 transitions. [2020-12-22 10:02:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:02:55,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:55,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:55,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:02:55,566 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:55,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:02:55,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:55,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58892402] [2020-12-22 10:02:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:55,648 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 10:02:55,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58892402] [2020-12-22 10:02:55,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:55,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:55,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489636803] [2020-12-22 10:02:55,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:02:55,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:55,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:02:55,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:55,651 INFO L87 Difference]: Start difference. First operand 3056 states and 4646 transitions. Second operand 3 states. [2020-12-22 10:02:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:55,796 INFO L93 Difference]: Finished difference Result 4468 states and 6856 transitions. [2020-12-22 10:02:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:02:55,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:02:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:55,815 INFO L225 Difference]: With dead ends: 4468 [2020-12-22 10:02:55,816 INFO L226 Difference]: Without dead ends: 3714 [2020-12-22 10:02:55,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-12-22 10:02:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3712. [2020-12-22 10:02:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2020-12-22 10:02:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5654 transitions. [2020-12-22 10:02:55,954 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5654 transitions. Word has length 77 [2020-12-22 10:02:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:55,954 INFO L481 AbstractCegarLoop]: Abstraction has 3712 states and 5654 transitions. [2020-12-22 10:02:55,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:02:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5654 transitions. [2020-12-22 10:02:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:02:55,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:55,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:55,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:02:55,956 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:55,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:02:55,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:55,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727349125] [2020-12-22 10:02:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:56,095 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 10:02:56,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727349125] [2020-12-22 10:02:56,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:56,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:02:56,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382712358] [2020-12-22 10:02:56,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:02:56,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:56,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:02:56,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:02:56,097 INFO L87 Difference]: Start difference. First operand 3712 states and 5654 transitions. Second operand 8 states. [2020-12-22 10:02:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:57,181 INFO L93 Difference]: Finished difference Result 20632 states and 31970 transitions. [2020-12-22 10:02:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:02:57,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:02:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:57,261 INFO L225 Difference]: With dead ends: 20632 [2020-12-22 10:02:57,261 INFO L226 Difference]: Without dead ends: 19222 [2020-12-22 10:02:57,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:02:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19222 states. [2020-12-22 10:02:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19222 to 5120. [2020-12-22 10:02:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5120 states. [2020-12-22 10:02:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 7782 transitions. [2020-12-22 10:02:57,669 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 7782 transitions. Word has length 77 [2020-12-22 10:02:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:57,670 INFO L481 AbstractCegarLoop]: Abstraction has 5120 states and 7782 transitions. [2020-12-22 10:02:57,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:02:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 7782 transitions. [2020-12-22 10:02:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:02:57,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:57,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:57,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:02:57,671 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:57,672 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:02:57,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:57,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306442691] [2020-12-22 10:02:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:57,761 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 10:02:57,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306442691] [2020-12-22 10:02:57,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:57,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:57,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92916017] [2020-12-22 10:02:57,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:02:57,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:02:57,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:57,769 INFO L87 Difference]: Start difference. First operand 5120 states and 7782 transitions. Second operand 3 states. [2020-12-22 10:02:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:58,211 INFO L93 Difference]: Finished difference Result 10404 states and 15816 transitions. [2020-12-22 10:02:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:02:58,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:02:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:58,229 INFO L225 Difference]: With dead ends: 10404 [2020-12-22 10:02:58,229 INFO L226 Difference]: Without dead ends: 7586 [2020-12-22 10:02:58,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2020-12-22 10:02:58,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 7520. [2020-12-22 10:02:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:02:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11270 transitions. [2020-12-22 10:02:58,777 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11270 transitions. Word has length 79 [2020-12-22 10:02:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:58,778 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11270 transitions. [2020-12-22 10:02:58,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:02:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11270 transitions. [2020-12-22 10:02:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:02:58,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:58,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:02:58,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:02:58,779 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:02:58,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:58,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579067301] [2020-12-22 10:02:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:59,059 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 10:02:59,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579067301] [2020-12-22 10:02:59,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:59,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:02:59,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283414402] [2020-12-22 10:02:59,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:02:59,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:59,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:02:59,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:02:59,062 INFO L87 Difference]: Start difference. First operand 7520 states and 11270 transitions. Second operand 8 states. [2020-12-22 10:02:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:59,730 INFO L93 Difference]: Finished difference Result 12740 states and 19080 transitions. [2020-12-22 10:02:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:02:59,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:02:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:59,748 INFO L225 Difference]: With dead ends: 12740 [2020-12-22 10:02:59,748 INFO L226 Difference]: Without dead ends: 7522 [2020-12-22 10:02:59,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:02:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2020-12-22 10:03:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 7520. [2020-12-22 10:03:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:03:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11206 transitions. [2020-12-22 10:03:00,164 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11206 transitions. Word has length 79 [2020-12-22 10:03:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:00,165 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11206 transitions. [2020-12-22 10:03:00,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11206 transitions. [2020-12-22 10:03:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:03:00,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:00,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:00,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:03:00,166 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:00,167 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:03:00,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:00,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332300239] [2020-12-22 10:03:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:00,274 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 10:03:00,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332300239] [2020-12-22 10:03:00,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:00,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:03:00,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474161413] [2020-12-22 10:03:00,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:03:00,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:03:00,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:03:00,277 INFO L87 Difference]: Start difference. First operand 7520 states and 11206 transitions. Second operand 6 states. [2020-12-22 10:03:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:00,800 INFO L93 Difference]: Finished difference Result 12738 states and 18951 transitions. [2020-12-22 10:03:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:03:00,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:03:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:00,817 INFO L225 Difference]: With dead ends: 12738 [2020-12-22 10:03:00,817 INFO L226 Difference]: Without dead ends: 7520 [2020-12-22 10:03:00,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:03:00,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2020-12-22 10:03:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7520. [2020-12-22 10:03:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:03:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11142 transitions. [2020-12-22 10:03:01,469 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11142 transitions. Word has length 80 [2020-12-22 10:03:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:01,469 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11142 transitions. [2020-12-22 10:03:01,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:03:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11142 transitions. [2020-12-22 10:03:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:03:01,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:01,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:01,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:03:01,471 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:03:01,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:01,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034372961] [2020-12-22 10:03:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:01,626 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 10:03:01,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034372961] [2020-12-22 10:03:01,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:01,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:01,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597446426] [2020-12-22 10:03:01,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:01,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:01,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:01,630 INFO L87 Difference]: Start difference. First operand 7520 states and 11142 transitions. Second operand 8 states. [2020-12-22 10:03:02,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:02,618 INFO L93 Difference]: Finished difference Result 11426 states and 16785 transitions. [2020-12-22 10:03:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:03:02,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:03:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:02,645 INFO L225 Difference]: With dead ends: 11426 [2020-12-22 10:03:02,645 INFO L226 Difference]: Without dead ends: 11424 [2020-12-22 10:03:02,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:03:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11424 states. [2020-12-22 10:03:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11424 to 7712. [2020-12-22 10:03:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7712 states. [2020-12-22 10:03:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 11302 transitions. [2020-12-22 10:03:03,188 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 11302 transitions. Word has length 80 [2020-12-22 10:03:03,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:03,189 INFO L481 AbstractCegarLoop]: Abstraction has 7712 states and 11302 transitions. [2020-12-22 10:03:03,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 11302 transitions. [2020-12-22 10:03:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:03:03,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:03,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:03,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:03:03,191 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:03,191 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:03:03,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:03,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034538955] [2020-12-22 10:03:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:03,244 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 10:03:03,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034538955] [2020-12-22 10:03:03,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:03,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:03,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721606310] [2020-12-22 10:03:03,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:03,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:03,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:03,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:03,247 INFO L87 Difference]: Start difference. First operand 7712 states and 11302 transitions. Second operand 3 states. [2020-12-22 10:03:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:03,961 INFO L93 Difference]: Finished difference Result 13223 states and 19372 transitions. [2020-12-22 10:03:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:03,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:03:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:03,983 INFO L225 Difference]: With dead ends: 13223 [2020-12-22 10:03:03,983 INFO L226 Difference]: Without dead ends: 10212 [2020-12-22 10:03:03,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10212 states. [2020-12-22 10:03:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10212 to 10210. [2020-12-22 10:03:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10210 states. [2020-12-22 10:03:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14856 transitions. [2020-12-22 10:03:04,700 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14856 transitions. Word has length 81 [2020-12-22 10:03:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:04,701 INFO L481 AbstractCegarLoop]: Abstraction has 10210 states and 14856 transitions. [2020-12-22 10:03:04,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14856 transitions. [2020-12-22 10:03:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:04,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:04,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:04,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:03:04,714 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:04,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:03:04,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:04,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102445043] [2020-12-22 10:03:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:03:04,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102445043] [2020-12-22 10:03:04,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:04,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:04,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263378734] [2020-12-22 10:03:04,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:04,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:04,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:04,867 INFO L87 Difference]: Start difference. First operand 10210 states and 14856 transitions. Second operand 8 states. [2020-12-22 10:03:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:07,810 INFO L93 Difference]: Finished difference Result 59216 states and 85391 transitions. [2020-12-22 10:03:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:07,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:07,911 INFO L225 Difference]: With dead ends: 59216 [2020-12-22 10:03:07,911 INFO L226 Difference]: Without dead ends: 51310 [2020-12-22 10:03:07,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:03:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2020-12-22 10:03:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2020-12-22 10:03:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18114 states. [2020-12-22 10:03:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26152 transitions. [2020-12-22 10:03:09,532 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26152 transitions. Word has length 111 [2020-12-22 10:03:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:09,532 INFO L481 AbstractCegarLoop]: Abstraction has 18114 states and 26152 transitions. [2020-12-22 10:03:09,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26152 transitions. [2020-12-22 10:03:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:09,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:09,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:09,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:03:09,540 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:09,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:03:09,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:09,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720941501] [2020-12-22 10:03:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:03:09,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720941501] [2020-12-22 10:03:09,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:09,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:09,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325830150] [2020-12-22 10:03:09,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:09,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:09,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:09,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:09,688 INFO L87 Difference]: Start difference. First operand 18114 states and 26152 transitions. Second operand 8 states. [2020-12-22 10:03:09,915 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-22 10:03:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:13,436 INFO L93 Difference]: Finished difference Result 67120 states and 96687 transitions. [2020-12-22 10:03:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:13,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:13,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:13,534 INFO L225 Difference]: With dead ends: 67120 [2020-12-22 10:03:13,535 INFO L226 Difference]: Without dead ends: 59214 [2020-12-22 10:03:13,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:03:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2020-12-22 10:03:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2020-12-22 10:03:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29986 states. [2020-12-22 10:03:15,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43016 transitions. [2020-12-22 10:03:15,964 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43016 transitions. Word has length 111 [2020-12-22 10:03:15,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:15,965 INFO L481 AbstractCegarLoop]: Abstraction has 29986 states and 43016 transitions. [2020-12-22 10:03:15,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43016 transitions. [2020-12-22 10:03:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:15,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:15,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:15,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:03:15,974 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:03:15,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:15,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720706580] [2020-12-22 10:03:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:16,226 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-12-22 10:03:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:03:16,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720706580] [2020-12-22 10:03:16,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:16,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:16,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033709003] [2020-12-22 10:03:16,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:16,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:16,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:16,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:16,292 INFO L87 Difference]: Start difference. First operand 29986 states and 43016 transitions. Second operand 8 states. [2020-12-22 10:03:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:20,717 INFO L93 Difference]: Finished difference Result 75024 states and 107983 transitions. [2020-12-22 10:03:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:20,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:20,820 INFO L225 Difference]: With dead ends: 75024 [2020-12-22 10:03:20,821 INFO L226 Difference]: Without dead ends: 67118 [2020-12-22 10:03:20,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:03:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2020-12-22 10:03:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2020-12-22 10:03:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37890 states. [2020-12-22 10:03:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54312 transitions. [2020-12-22 10:03:24,123 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54312 transitions. Word has length 111 [2020-12-22 10:03:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:24,125 INFO L481 AbstractCegarLoop]: Abstraction has 37890 states and 54312 transitions. [2020-12-22 10:03:24,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54312 transitions. [2020-12-22 10:03:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:24,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:24,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:24,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:03:24,145 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:24,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:24,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:03:24,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:24,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304271105] [2020-12-22 10:03:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:03:24,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304271105] [2020-12-22 10:03:24,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:24,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:24,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827570759] [2020-12-22 10:03:24,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:24,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:24,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:24,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:24,283 INFO L87 Difference]: Start difference. First operand 37890 states and 54312 transitions. Second operand 8 states. [2020-12-22 10:03:29,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:29,792 INFO L93 Difference]: Finished difference Result 82928 states and 119279 transitions. [2020-12-22 10:03:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:29,792 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:29,883 INFO L225 Difference]: With dead ends: 82928 [2020-12-22 10:03:29,883 INFO L226 Difference]: Without dead ends: 75022 [2020-12-22 10:03:29,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:03:29,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2020-12-22 10:03:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 45794. [2020-12-22 10:03:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45794 states. [2020-12-22 10:03:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45794 states to 45794 states and 65608 transitions. [2020-12-22 10:03:33,879 INFO L78 Accepts]: Start accepts. Automaton has 45794 states and 65608 transitions. Word has length 111 [2020-12-22 10:03:33,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:33,880 INFO L481 AbstractCegarLoop]: Abstraction has 45794 states and 65608 transitions. [2020-12-22 10:03:33,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 45794 states and 65608 transitions. [2020-12-22 10:03:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:33,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:33,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:33,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:03:33,890 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:33,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:03:33,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:33,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006849171] [2020-12-22 10:03:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:03:34,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006849171] [2020-12-22 10:03:34,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:34,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:34,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491774272] [2020-12-22 10:03:34,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:34,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:34,026 INFO L87 Difference]: Start difference. First operand 45794 states and 65608 transitions. Second operand 8 states. [2020-12-22 10:03:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:40,524 INFO L93 Difference]: Finished difference Result 90832 states and 130575 transitions. [2020-12-22 10:03:40,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:40,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:40,612 INFO L225 Difference]: With dead ends: 90832 [2020-12-22 10:03:40,612 INFO L226 Difference]: Without dead ends: 82926 [2020-12-22 10:03:40,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:03:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82926 states. [2020-12-22 10:03:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82926 to 53698. [2020-12-22 10:03:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53698 states. [2020-12-22 10:03:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 76904 transitions. [2020-12-22 10:03:45,233 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 76904 transitions. Word has length 111 [2020-12-22 10:03:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:45,233 INFO L481 AbstractCegarLoop]: Abstraction has 53698 states and 76904 transitions. [2020-12-22 10:03:45,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 76904 transitions. [2020-12-22 10:03:45,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:03:45,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:45,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:45,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:03:45,246 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:45,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:03:45,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:45,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944788630] [2020-12-22 10:03:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:03:45,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944788630] [2020-12-22 10:03:45,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:45,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:45,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377064611] [2020-12-22 10:03:45,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:45,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:45,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:45,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:45,336 INFO L87 Difference]: Start difference. First operand 53698 states and 76904 transitions. Second operand 3 states. [2020-12-22 10:03:48,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:48,234 INFO L93 Difference]: Finished difference Result 89511 states and 128529 transitions. [2020-12-22 10:03:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:48,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:03:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:48,269 INFO L225 Difference]: With dead ends: 89511 [2020-12-22 10:03:48,269 INFO L226 Difference]: Without dead ends: 38117 [2020-12-22 10:03:48,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38117 states. [2020-12-22 10:03:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38117 to 38115. [2020-12-22 10:03:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38115 states. [2020-12-22 10:03:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38115 states to 38115 states and 54670 transitions. [2020-12-22 10:03:51,361 INFO L78 Accepts]: Start accepts. Automaton has 38115 states and 54670 transitions. Word has length 113 [2020-12-22 10:03:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:51,361 INFO L481 AbstractCegarLoop]: Abstraction has 38115 states and 54670 transitions. [2020-12-22 10:03:51,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 38115 states and 54670 transitions. [2020-12-22 10:03:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:03:51,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:51,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:03:51,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:03:51,369 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:51,370 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:03:51,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:51,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474265711] [2020-12-22 10:03:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:03:51,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474265711] [2020-12-22 10:03:51,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:51,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:51,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301902364] [2020-12-22 10:03:51,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:51,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:51,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:51,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:51,519 INFO L87 Difference]: Start difference. First operand 38115 states and 54670 transitions. Second operand 8 states. [2020-12-22 10:03:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:56,889 INFO L93 Difference]: Finished difference Result 71153 states and 102293 transitions. [2020-12-22 10:03:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:56,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:03:56,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:56,952 INFO L225 Difference]: With dead ends: 71153 [2020-12-22 10:03:56,953 INFO L226 Difference]: Without dead ends: 65647 [2020-12-22 10:03:56,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:03:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65647 states. [2020-12-22 10:04:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65647 to 43619. [2020-12-22 10:04:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43619 states. [2020-12-22 10:04:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43619 states to 43619 states and 62542 transitions. [2020-12-22 10:04:00,779 INFO L78 Accepts]: Start accepts. Automaton has 43619 states and 62542 transitions. Word has length 113 [2020-12-22 10:04:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:00,779 INFO L481 AbstractCegarLoop]: Abstraction has 43619 states and 62542 transitions. [2020-12-22 10:04:00,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:04:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 43619 states and 62542 transitions. [2020-12-22 10:04:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:04:00,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:00,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:00,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:04:00,787 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:00,787 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:04:00,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:00,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559016814] [2020-12-22 10:04:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:01,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559016814] [2020-12-22 10:04:01,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989463981] [2020-12-22 10:04:01,136 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 10:04:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:01,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:04:01,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:04:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:04:01,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:04:01,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:04:01,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422825118] [2020-12-22 10:04:01,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:04:01,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:04:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:04:01,778 INFO L87 Difference]: Start difference. First operand 43619 states and 62542 transitions. Second operand 16 states. [2020-12-22 10:04:03,072 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 10:04:07,578 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:04:07,788 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:04:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:32,008 INFO L93 Difference]: Finished difference Result 309560 states and 436777 transitions. [2020-12-22 10:04:32,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:04:32,011 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:04:32,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:32,762 INFO L225 Difference]: With dead ends: 309560 [2020-12-22 10:04:32,762 INFO L226 Difference]: Without dead ends: 268278 [2020-12-22 10:04:32,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:04:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268278 states. [2020-12-22 10:04:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268278 to 135312. [2020-12-22 10:04:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135312 states. [2020-12-22 10:04:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135312 states to 135312 states and 188780 transitions. [2020-12-22 10:04:48,805 INFO L78 Accepts]: Start accepts. Automaton has 135312 states and 188780 transitions. Word has length 114 [2020-12-22 10:04:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:48,806 INFO L481 AbstractCegarLoop]: Abstraction has 135312 states and 188780 transitions. [2020-12-22 10:04:48,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:04:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 135312 states and 188780 transitions. [2020-12-22 10:04:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:04:48,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:48,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:49,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:04:49,040 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:49,042 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:04:49,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:49,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345690123] [2020-12-22 10:04:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:49,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345690123] [2020-12-22 10:04:49,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887340625] [2020-12-22 10:04:49,465 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 10:04:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:49,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:04:49,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:04:49,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:04:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:50,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:04:50,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:04:50,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039995486] [2020-12-22 10:04:50,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:04:50,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:50,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:04:50,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:04:50,259 INFO L87 Difference]: Start difference. First operand 135312 states and 188780 transitions. Second operand 22 states. [2020-12-22 10:04:50,582 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:04:52,824 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:04:53,050 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:04:53,326 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:04:54,002 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:04:54,187 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:04:54,482 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:04:59,019 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:04:59,308 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:05:00,484 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:01,515 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:05:01,891 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:05:02,950 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-12-22 10:05:03,385 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:04,117 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:05:04,899 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:05,541 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:06,468 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:05:06,748 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:05:09,827 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:10,446 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:10,938 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:05:19,131 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:05:19,451 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:05:19,772 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:05:19,939 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:20,172 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:05:20,460 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:05:20,609 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:20,817 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:05:21,337 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:05:21,493 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:21,695 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:05:22,048 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:05:22,250 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:05:22,500 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:05:22,809 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:05:23,085 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:23,309 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:05:24,386 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:05:24,547 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:24,811 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:05:24,949 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:05:26,207 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:05:26,535 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:26,812 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:05:27,091 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:42,301 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:42,470 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:42,991 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:43,187 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:05:43,402 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:44,429 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:05:44,706 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:44,872 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:45,223 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:45,405 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:05:45,801 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:46,604 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:05:46,757 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:47,071 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:05:48,612 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:05:48,913 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:05:49,345 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:49,822 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:50,436 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:53,038 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:06:15,377 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:06:17,123 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:06:18,114 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44