/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/systemc/mem_slave_tlm.5.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:06:02,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:06:02,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:06:02,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:06:02,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:06:02,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:06:02,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:06:02,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:06:02,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:06:02,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:06:02,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:06:02,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:06:02,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:06:02,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:06:02,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:06:02,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:06:02,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:06:02,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:06:02,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:06:02,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:06:02,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:06:02,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:06:02,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:06:02,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:06:02,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:06:02,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:06:02,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:06:02,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:06:02,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:06:02,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:06:02,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:06:02,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:06:02,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:06:02,762 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:06:02,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:06:02,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:06:02,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:06:02,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:06:02,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:06:02,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:06:02,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:06:02,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:06:02,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:06:02,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:06:02,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:06:02,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:06:02,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:06:02,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:06:02,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:06:02,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:06:02,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:06:02,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:06:02,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:06:02,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:06:02,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:06:03,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:06:03,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:06:03,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:06:03,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:06:03,208 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:06:03,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2020-12-22 07:06:03,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666c0a283/424844dfc56e46f38c17735bdc96aacd/FLAG2bfa794d1 [2020-12-22 07:06:04,185 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:06:04,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2020-12-22 07:06:04,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666c0a283/424844dfc56e46f38c17735bdc96aacd/FLAG2bfa794d1 [2020-12-22 07:06:04,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666c0a283/424844dfc56e46f38c17735bdc96aacd [2020-12-22 07:06:04,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:06:04,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:06:04,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:06:04,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:06:04,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:06:04,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:04,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a9e2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04, skipping insertion in model container [2020-12-22 07:06:04,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:04,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:06:04,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:06:04,646 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/systemc/mem_slave_tlm.5.cil.c[341,354] [2020-12-22 07:06:04,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:06:04,787 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:06:04,802 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/systemc/mem_slave_tlm.5.cil.c[341,354] [2020-12-22 07:06:04,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:06:04,971 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:06:04,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04 WrapperNode [2020-12-22 07:06:04,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:06:04,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:06:04,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:06:04,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:06:04,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:06:05,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:06:05,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:06:05,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:06:05,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (1/1) ... [2020-12-22 07:06:05,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:06:05,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:06:05,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:06:05,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:06:05,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (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 07:06:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:06:05,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:06:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:06:05,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:06:06,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:06:06,395 INFO L299 CfgBuilder]: Removed 39 assume(true) statements. [2020-12-22 07:06:06,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:06:06 BoogieIcfgContainer [2020-12-22 07:06:06,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:06:06,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:06:06,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:06:06,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:06:06,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:06:04" (1/3) ... [2020-12-22 07:06:06,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b916ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:06:06, skipping insertion in model container [2020-12-22 07:06:06,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:06:04" (2/3) ... [2020-12-22 07:06:06,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b916ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:06:06, skipping insertion in model container [2020-12-22 07:06:06,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:06:06" (3/3) ... [2020-12-22 07:06:06,408 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2020-12-22 07:06:06,415 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:06:06,421 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 07:06:06,439 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 07:06:06,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:06:06,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:06:06,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:06:06,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:06:06,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:06:06,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:06:06,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:06:06,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:06:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states. [2020-12-22 07:06:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 07:06:06,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:06,509 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] [2020-12-22 07:06:06,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:06,516 INFO L82 PathProgramCache]: Analyzing trace with hash -963603713, now seen corresponding path program 1 times [2020-12-22 07:06:06,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:06,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800495398] [2020-12-22 07:06:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:06,763 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 07:06:06,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800495398] [2020-12-22 07:06:06,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:06,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:06,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967807032] [2020-12-22 07:06:06,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:06,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:06,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:06,846 INFO L87 Difference]: Start difference. First operand 278 states. Second operand 3 states. [2020-12-22 07:06:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:07,287 INFO L93 Difference]: Finished difference Result 737 states and 1340 transitions. [2020-12-22 07:06:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:07,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 07:06:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:07,309 INFO L225 Difference]: With dead ends: 737 [2020-12-22 07:06:07,310 INFO L226 Difference]: Without dead ends: 456 [2020-12-22 07:06:07,315 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 07:06:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-12-22 07:06:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 440. [2020-12-22 07:06:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-12-22 07:06:07,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 698 transitions. [2020-12-22 07:06:07,404 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 698 transitions. Word has length 28 [2020-12-22 07:06:07,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:07,404 INFO L481 AbstractCegarLoop]: Abstraction has 440 states and 698 transitions. [2020-12-22 07:06:07,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:07,404 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 698 transitions. [2020-12-22 07:06:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 07:06:07,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:07,408 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] [2020-12-22 07:06:07,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:06:07,409 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1271304470, now seen corresponding path program 1 times [2020-12-22 07:06:07,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:07,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656846925] [2020-12-22 07:06:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:07,492 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 07:06:07,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656846925] [2020-12-22 07:06:07,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:07,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:07,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100871211] [2020-12-22 07:06:07,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:07,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:07,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:07,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:07,497 INFO L87 Difference]: Start difference. First operand 440 states and 698 transitions. Second operand 3 states. [2020-12-22 07:06:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:07,649 INFO L93 Difference]: Finished difference Result 1159 states and 1863 transitions. [2020-12-22 07:06:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:07,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 07:06:07,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:07,657 INFO L225 Difference]: With dead ends: 1159 [2020-12-22 07:06:07,658 INFO L226 Difference]: Without dead ends: 733 [2020-12-22 07:06:07,665 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 07:06:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2020-12-22 07:06:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 717. [2020-12-22 07:06:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-12-22 07:06:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1169 transitions. [2020-12-22 07:06:07,825 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1169 transitions. Word has length 40 [2020-12-22 07:06:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:07,826 INFO L481 AbstractCegarLoop]: Abstraction has 717 states and 1169 transitions. [2020-12-22 07:06:07,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1169 transitions. [2020-12-22 07:06:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 07:06:07,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:07,836 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] [2020-12-22 07:06:07,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:06:07,836 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1281078165, now seen corresponding path program 1 times [2020-12-22 07:06:07,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:07,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014437601] [2020-12-22 07:06:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:07,939 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 07:06:07,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014437601] [2020-12-22 07:06:07,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:07,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:07,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994896683] [2020-12-22 07:06:07,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:07,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:07,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:07,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:07,942 INFO L87 Difference]: Start difference. First operand 717 states and 1169 transitions. Second operand 3 states. [2020-12-22 07:06:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:08,071 INFO L93 Difference]: Finished difference Result 1795 states and 2924 transitions. [2020-12-22 07:06:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:08,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 07:06:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:08,080 INFO L225 Difference]: With dead ends: 1795 [2020-12-22 07:06:08,080 INFO L226 Difference]: Without dead ends: 1103 [2020-12-22 07:06:08,086 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 07:06:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-12-22 07:06:08,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1091. [2020-12-22 07:06:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-12-22 07:06:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1772 transitions. [2020-12-22 07:06:08,165 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1772 transitions. Word has length 41 [2020-12-22 07:06:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:08,165 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1772 transitions. [2020-12-22 07:06:08,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1772 transitions. [2020-12-22 07:06:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 07:06:08,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:08,169 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:06:08,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:06:08,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash -154905712, now seen corresponding path program 1 times [2020-12-22 07:06:08,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:08,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367311450] [2020-12-22 07:06:08,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:08,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367311450] [2020-12-22 07:06:08,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:08,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:06:08,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049047012] [2020-12-22 07:06:08,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:06:08,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:06:08,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:06:08,298 INFO L87 Difference]: Start difference. First operand 1091 states and 1772 transitions. Second operand 4 states. [2020-12-22 07:06:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:08,771 INFO L93 Difference]: Finished difference Result 3005 states and 4865 transitions. [2020-12-22 07:06:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:06:08,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 07:06:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:08,784 INFO L225 Difference]: With dead ends: 3005 [2020-12-22 07:06:08,784 INFO L226 Difference]: Without dead ends: 1939 [2020-12-22 07:06:08,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:06:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-12-22 07:06:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1709. [2020-12-22 07:06:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-12-22 07:06:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2744 transitions. [2020-12-22 07:06:08,891 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2744 transitions. Word has length 46 [2020-12-22 07:06:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:08,891 INFO L481 AbstractCegarLoop]: Abstraction has 1709 states and 2744 transitions. [2020-12-22 07:06:08,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:06:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2744 transitions. [2020-12-22 07:06:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 07:06:08,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:08,896 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] [2020-12-22 07:06:08,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:06:08,896 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:08,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:08,897 INFO L82 PathProgramCache]: Analyzing trace with hash 796224946, now seen corresponding path program 1 times [2020-12-22 07:06:08,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:08,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715126575] [2020-12-22 07:06:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:08,989 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 07:06:08,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715126575] [2020-12-22 07:06:08,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:08,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:06:08,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170346538] [2020-12-22 07:06:08,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:06:08,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:08,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:06:08,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:06:08,992 INFO L87 Difference]: Start difference. First operand 1709 states and 2744 transitions. Second operand 4 states. [2020-12-22 07:06:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:09,598 INFO L93 Difference]: Finished difference Result 5093 states and 8076 transitions. [2020-12-22 07:06:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:06:09,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 07:06:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:09,620 INFO L225 Difference]: With dead ends: 5093 [2020-12-22 07:06:09,620 INFO L226 Difference]: Without dead ends: 3403 [2020-12-22 07:06:09,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:06:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-12-22 07:06:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3017. [2020-12-22 07:06:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3017 states. [2020-12-22 07:06:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 4775 transitions. [2020-12-22 07:06:09,781 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 4775 transitions. Word has length 52 [2020-12-22 07:06:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:09,781 INFO L481 AbstractCegarLoop]: Abstraction has 3017 states and 4775 transitions. [2020-12-22 07:06:09,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:06:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 4775 transitions. [2020-12-22 07:06:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 07:06:09,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:09,785 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] [2020-12-22 07:06:09,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:06:09,785 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:09,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:09,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1351345783, now seen corresponding path program 1 times [2020-12-22 07:06:09,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:09,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880863418] [2020-12-22 07:06:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:09,902 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 07:06:09,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880863418] [2020-12-22 07:06:09,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:09,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:09,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508229272] [2020-12-22 07:06:09,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:09,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:09,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:09,909 INFO L87 Difference]: Start difference. First operand 3017 states and 4775 transitions. Second operand 3 states. [2020-12-22 07:06:10,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:10,138 INFO L93 Difference]: Finished difference Result 7103 states and 11202 transitions. [2020-12-22 07:06:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:10,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 07:06:10,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:10,162 INFO L225 Difference]: With dead ends: 7103 [2020-12-22 07:06:10,163 INFO L226 Difference]: Without dead ends: 4109 [2020-12-22 07:06:10,170 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 07:06:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2020-12-22 07:06:10,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3925. [2020-12-22 07:06:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3925 states. [2020-12-22 07:06:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 6141 transitions. [2020-12-22 07:06:10,449 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 6141 transitions. Word has length 52 [2020-12-22 07:06:10,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:10,450 INFO L481 AbstractCegarLoop]: Abstraction has 3925 states and 6141 transitions. [2020-12-22 07:06:10,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 6141 transitions. [2020-12-22 07:06:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 07:06:10,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:10,454 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] [2020-12-22 07:06:10,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:06:10,454 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash 597787097, now seen corresponding path program 1 times [2020-12-22 07:06:10,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:10,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340532114] [2020-12-22 07:06:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:10,552 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 07:06:10,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340532114] [2020-12-22 07:06:10,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:10,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:10,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493135478] [2020-12-22 07:06:10,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:10,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:10,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:10,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:10,557 INFO L87 Difference]: Start difference. First operand 3925 states and 6141 transitions. Second operand 3 states. [2020-12-22 07:06:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:11,095 INFO L93 Difference]: Finished difference Result 9443 states and 14897 transitions. [2020-12-22 07:06:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:11,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 07:06:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:11,125 INFO L225 Difference]: With dead ends: 9443 [2020-12-22 07:06:11,126 INFO L226 Difference]: Without dead ends: 5541 [2020-12-22 07:06:11,133 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 07:06:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5541 states. [2020-12-22 07:06:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5541 to 4755. [2020-12-22 07:06:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4755 states. [2020-12-22 07:06:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4755 states to 4755 states and 7178 transitions. [2020-12-22 07:06:11,362 INFO L78 Accepts]: Start accepts. Automaton has 4755 states and 7178 transitions. Word has length 60 [2020-12-22 07:06:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:11,363 INFO L481 AbstractCegarLoop]: Abstraction has 4755 states and 7178 transitions. [2020-12-22 07:06:11,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4755 states and 7178 transitions. [2020-12-22 07:06:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 07:06:11,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:11,367 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] [2020-12-22 07:06:11,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:06:11,367 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:11,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:11,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2030496955, now seen corresponding path program 1 times [2020-12-22 07:06:11,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:11,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238122786] [2020-12-22 07:06:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:11,452 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 07:06:11,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238122786] [2020-12-22 07:06:11,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:11,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:11,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786924971] [2020-12-22 07:06:11,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:11,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:11,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:11,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:11,455 INFO L87 Difference]: Start difference. First operand 4755 states and 7178 transitions. Second operand 3 states. [2020-12-22 07:06:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:11,728 INFO L93 Difference]: Finished difference Result 9353 states and 14133 transitions. [2020-12-22 07:06:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:11,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 07:06:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:11,754 INFO L225 Difference]: With dead ends: 9353 [2020-12-22 07:06:11,754 INFO L226 Difference]: Without dead ends: 4621 [2020-12-22 07:06:11,761 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 07:06:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2020-12-22 07:06:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 4621. [2020-12-22 07:06:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4621 states. [2020-12-22 07:06:11,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 6877 transitions. [2020-12-22 07:06:11,984 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 6877 transitions. Word has length 62 [2020-12-22 07:06:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:11,985 INFO L481 AbstractCegarLoop]: Abstraction has 4621 states and 6877 transitions. [2020-12-22 07:06:11,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 6877 transitions. [2020-12-22 07:06:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:06:11,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:11,988 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] [2020-12-22 07:06:11,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:06:11,988 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:11,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:11,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1137929187, now seen corresponding path program 1 times [2020-12-22 07:06:11,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:11,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809155490] [2020-12-22 07:06:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:12,043 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 07:06:12,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809155490] [2020-12-22 07:06:12,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:12,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:12,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71718880] [2020-12-22 07:06:12,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:12,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:12,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:12,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:12,053 INFO L87 Difference]: Start difference. First operand 4621 states and 6877 transitions. Second operand 3 states. [2020-12-22 07:06:12,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:12,327 INFO L93 Difference]: Finished difference Result 9889 states and 14872 transitions. [2020-12-22 07:06:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:12,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:06:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:12,355 INFO L225 Difference]: With dead ends: 9889 [2020-12-22 07:06:12,355 INFO L226 Difference]: Without dead ends: 5291 [2020-12-22 07:06:12,362 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 07:06:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2020-12-22 07:06:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 3543. [2020-12-22 07:06:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2020-12-22 07:06:12,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5319 transitions. [2020-12-22 07:06:12,542 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5319 transitions. Word has length 63 [2020-12-22 07:06:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:12,543 INFO L481 AbstractCegarLoop]: Abstraction has 3543 states and 5319 transitions. [2020-12-22 07:06:12,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:12,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5319 transitions. [2020-12-22 07:06:12,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:06:12,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:12,545 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] [2020-12-22 07:06:12,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:06:12,545 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:12,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:12,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2053707672, now seen corresponding path program 1 times [2020-12-22 07:06:12,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:12,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122710682] [2020-12-22 07:06:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:12,619 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 07:06:12,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122710682] [2020-12-22 07:06:12,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:12,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:06:12,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829775773] [2020-12-22 07:06:12,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:06:12,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:06:12,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:12,624 INFO L87 Difference]: Start difference. First operand 3543 states and 5319 transitions. Second operand 6 states. [2020-12-22 07:06:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:13,917 INFO L93 Difference]: Finished difference Result 16685 states and 24815 transitions. [2020-12-22 07:06:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:06:13,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 07:06:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:13,964 INFO L225 Difference]: With dead ends: 16685 [2020-12-22 07:06:13,964 INFO L226 Difference]: Without dead ends: 13361 [2020-12-22 07:06:13,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:06:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13361 states. [2020-12-22 07:06:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13361 to 4409. [2020-12-22 07:06:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4409 states. [2020-12-22 07:06:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 6577 transitions. [2020-12-22 07:06:14,309 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 6577 transitions. Word has length 65 [2020-12-22 07:06:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:14,310 INFO L481 AbstractCegarLoop]: Abstraction has 4409 states and 6577 transitions. [2020-12-22 07:06:14,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:06:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 6577 transitions. [2020-12-22 07:06:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:06:14,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:14,344 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] [2020-12-22 07:06:14,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:06:14,345 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash 308353685, now seen corresponding path program 1 times [2020-12-22 07:06:14,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:14,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131232595] [2020-12-22 07:06:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:14,431 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 07:06:14,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131232595] [2020-12-22 07:06:14,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:14,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:06:14,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315793232] [2020-12-22 07:06:14,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:06:14,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:14,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:06:14,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:06:14,435 INFO L87 Difference]: Start difference. First operand 4409 states and 6577 transitions. Second operand 7 states. [2020-12-22 07:06:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:16,500 INFO L93 Difference]: Finished difference Result 30225 states and 44734 transitions. [2020-12-22 07:06:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 07:06:16,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-12-22 07:06:16,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:16,563 INFO L225 Difference]: With dead ends: 30225 [2020-12-22 07:06:16,563 INFO L226 Difference]: Without dead ends: 26035 [2020-12-22 07:06:16,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2020-12-22 07:06:16,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26035 states. [2020-12-22 07:06:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26035 to 4717. [2020-12-22 07:06:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4717 states. [2020-12-22 07:06:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6987 transitions. [2020-12-22 07:06:17,065 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6987 transitions. Word has length 66 [2020-12-22 07:06:17,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:17,066 INFO L481 AbstractCegarLoop]: Abstraction has 4717 states and 6987 transitions. [2020-12-22 07:06:17,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:06:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6987 transitions. [2020-12-22 07:06:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:06:17,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:17,068 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:06:17,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:06:17,069 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:17,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1102042814, now seen corresponding path program 1 times [2020-12-22 07:06:17,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:17,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249207836] [2020-12-22 07:06:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:17,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249207836] [2020-12-22 07:06:17,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:17,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:17,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215205584] [2020-12-22 07:06:17,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:17,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:17,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:17,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:17,101 INFO L87 Difference]: Start difference. First operand 4717 states and 6987 transitions. Second operand 3 states. [2020-12-22 07:06:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:17,497 INFO L93 Difference]: Finished difference Result 9956 states and 14724 transitions. [2020-12-22 07:06:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:17,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 07:06:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:17,510 INFO L225 Difference]: With dead ends: 9956 [2020-12-22 07:06:17,510 INFO L226 Difference]: Without dead ends: 5260 [2020-12-22 07:06:17,518 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 07:06:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2020-12-22 07:06:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5186. [2020-12-22 07:06:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5186 states. [2020-12-22 07:06:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7664 transitions. [2020-12-22 07:06:17,844 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 7664 transitions. Word has length 77 [2020-12-22 07:06:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:17,844 INFO L481 AbstractCegarLoop]: Abstraction has 5186 states and 7664 transitions. [2020-12-22 07:06:17,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 7664 transitions. [2020-12-22 07:06:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 07:06:17,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:17,847 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-22 07:06:17,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:06:17,848 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash 348611025, now seen corresponding path program 1 times [2020-12-22 07:06:17,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:17,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804337091] [2020-12-22 07:06:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:17,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804337091] [2020-12-22 07:06:17,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:17,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:06:17,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336584457] [2020-12-22 07:06:17,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:06:17,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:17,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:06:17,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:06:17,925 INFO L87 Difference]: Start difference. First operand 5186 states and 7664 transitions. Second operand 4 states. [2020-12-22 07:06:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:18,748 INFO L93 Difference]: Finished difference Result 13878 states and 20348 transitions. [2020-12-22 07:06:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:06:18,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-22 07:06:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:18,769 INFO L225 Difference]: With dead ends: 13878 [2020-12-22 07:06:18,769 INFO L226 Difference]: Without dead ends: 8592 [2020-12-22 07:06:18,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 07:06:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2020-12-22 07:06:19,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 7621. [2020-12-22 07:06:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7621 states. [2020-12-22 07:06:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7621 states to 7621 states and 11024 transitions. [2020-12-22 07:06:19,386 INFO L78 Accepts]: Start accepts. Automaton has 7621 states and 11024 transitions. Word has length 88 [2020-12-22 07:06:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:19,386 INFO L481 AbstractCegarLoop]: Abstraction has 7621 states and 11024 transitions. [2020-12-22 07:06:19,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:06:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 7621 states and 11024 transitions. [2020-12-22 07:06:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 07:06:19,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:19,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-22 07:06:19,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:06:19,390 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:19,390 INFO L82 PathProgramCache]: Analyzing trace with hash 766561691, now seen corresponding path program 1 times [2020-12-22 07:06:19,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:19,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116642362] [2020-12-22 07:06:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:19,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116642362] [2020-12-22 07:06:19,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:19,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:19,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958963975] [2020-12-22 07:06:19,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:19,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:19,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:19,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:19,435 INFO L87 Difference]: Start difference. First operand 7621 states and 11024 transitions. Second operand 3 states. [2020-12-22 07:06:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:19,788 INFO L93 Difference]: Finished difference Result 10976 states and 15901 transitions. [2020-12-22 07:06:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:19,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 07:06:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:19,797 INFO L225 Difference]: With dead ends: 10976 [2020-12-22 07:06:19,797 INFO L226 Difference]: Without dead ends: 3363 [2020-12-22 07:06:19,808 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 07:06:19,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-12-22 07:06:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3310. [2020-12-22 07:06:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3310 states. [2020-12-22 07:06:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4481 transitions. [2020-12-22 07:06:20,050 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4481 transitions. Word has length 95 [2020-12-22 07:06:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:20,051 INFO L481 AbstractCegarLoop]: Abstraction has 3310 states and 4481 transitions. [2020-12-22 07:06:20,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4481 transitions. [2020-12-22 07:06:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 07:06:20,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:20,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:20,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:06:20,053 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash 826534791, now seen corresponding path program 1 times [2020-12-22 07:06:20,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:20,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332038779] [2020-12-22 07:06:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:20,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332038779] [2020-12-22 07:06:20,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:20,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:06:20,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049443301] [2020-12-22 07:06:20,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:06:20,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:20,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:06:20,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:06:20,122 INFO L87 Difference]: Start difference. First operand 3310 states and 4481 transitions. Second operand 5 states. [2020-12-22 07:06:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:20,767 INFO L93 Difference]: Finished difference Result 12609 states and 17059 transitions. [2020-12-22 07:06:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:06:20,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 07:06:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:20,784 INFO L225 Difference]: With dead ends: 12609 [2020-12-22 07:06:20,785 INFO L226 Difference]: Without dead ends: 9473 [2020-12-22 07:06:20,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:06:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2020-12-22 07:06:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 3312. [2020-12-22 07:06:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-12-22 07:06:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4477 transitions. [2020-12-22 07:06:21,122 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4477 transitions. Word has length 98 [2020-12-22 07:06:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:21,122 INFO L481 AbstractCegarLoop]: Abstraction has 3312 states and 4477 transitions. [2020-12-22 07:06:21,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:06:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4477 transitions. [2020-12-22 07:06:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 07:06:21,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:21,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:21,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:06:21,125 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:21,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:21,125 INFO L82 PathProgramCache]: Analyzing trace with hash -313074590, now seen corresponding path program 1 times [2020-12-22 07:06:21,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:21,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527291674] [2020-12-22 07:06:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:21,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527291674] [2020-12-22 07:06:21,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810249744] [2020-12-22 07:06:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:06:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:21,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:21,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:21,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:21,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:21,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259812258] [2020-12-22 07:06:21,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:21,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:21,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:21,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:21,531 INFO L87 Difference]: Start difference. First operand 3312 states and 4477 transitions. Second operand 3 states. [2020-12-22 07:06:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:21,883 INFO L93 Difference]: Finished difference Result 3955 states and 5340 transitions. [2020-12-22 07:06:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:21,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 07:06:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:21,887 INFO L225 Difference]: With dead ends: 3955 [2020-12-22 07:06:21,888 INFO L226 Difference]: Without dead ends: 3951 [2020-12-22 07:06:21,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2020-12-22 07:06:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3901. [2020-12-22 07:06:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3901 states. [2020-12-22 07:06:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 5264 transitions. [2020-12-22 07:06:22,208 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 5264 transitions. Word has length 100 [2020-12-22 07:06:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:22,208 INFO L481 AbstractCegarLoop]: Abstraction has 3901 states and 5264 transitions. [2020-12-22 07:06:22,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 5264 transitions. [2020-12-22 07:06:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 07:06:22,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:22,212 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:22,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 07:06:22,427 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:22,428 INFO L82 PathProgramCache]: Analyzing trace with hash -190497954, now seen corresponding path program 1 times [2020-12-22 07:06:22,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:22,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031182304] [2020-12-22 07:06:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:22,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031182304] [2020-12-22 07:06:22,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215941741] [2020-12-22 07:06:22,558 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 07:06:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:22,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:22,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:22,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:22,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:22,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379024117] [2020-12-22 07:06:22,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:22,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:22,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:22,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:22,902 INFO L87 Difference]: Start difference. First operand 3901 states and 5264 transitions. Second operand 3 states. [2020-12-22 07:06:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:23,191 INFO L93 Difference]: Finished difference Result 6951 states and 9433 transitions. [2020-12-22 07:06:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:23,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2020-12-22 07:06:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:23,194 INFO L225 Difference]: With dead ends: 6951 [2020-12-22 07:06:23,194 INFO L226 Difference]: Without dead ends: 3059 [2020-12-22 07:06:23,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2020-12-22 07:06:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2838. [2020-12-22 07:06:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2838 states. [2020-12-22 07:06:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3776 transitions. [2020-12-22 07:06:23,442 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3776 transitions. Word has length 156 [2020-12-22 07:06:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:23,442 INFO L481 AbstractCegarLoop]: Abstraction has 2838 states and 3776 transitions. [2020-12-22 07:06:23,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3776 transitions. [2020-12-22 07:06:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 07:06:23,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:23,446 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:23,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 07:06:23,662 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:23,663 INFO L82 PathProgramCache]: Analyzing trace with hash -458245749, now seen corresponding path program 1 times [2020-12-22 07:06:23,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:23,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417054921] [2020-12-22 07:06:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:23,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417054921] [2020-12-22 07:06:23,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370815092] [2020-12-22 07:06:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:23,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:23,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:06:24,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:24,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:24,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116169973] [2020-12-22 07:06:24,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:24,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:24,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:24,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:24,124 INFO L87 Difference]: Start difference. First operand 2838 states and 3776 transitions. Second operand 3 states. [2020-12-22 07:06:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:24,401 INFO L93 Difference]: Finished difference Result 5507 states and 7368 transitions. [2020-12-22 07:06:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:24,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-12-22 07:06:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:24,406 INFO L225 Difference]: With dead ends: 5507 [2020-12-22 07:06:24,406 INFO L226 Difference]: Without dead ends: 2838 [2020-12-22 07:06:24,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2020-12-22 07:06:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2838. [2020-12-22 07:06:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2838 states. [2020-12-22 07:06:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3680 transitions. [2020-12-22 07:06:24,579 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3680 transitions. Word has length 159 [2020-12-22 07:06:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:24,580 INFO L481 AbstractCegarLoop]: Abstraction has 2838 states and 3680 transitions. [2020-12-22 07:06:24,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3680 transitions. [2020-12-22 07:06:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 07:06:24,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:24,583 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:24,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 07:06:24,787 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:24,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:24,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1040089916, now seen corresponding path program 1 times [2020-12-22 07:06:24,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:24,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355986725] [2020-12-22 07:06:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:24,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355986725] [2020-12-22 07:06:24,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280427102] [2020-12-22 07:06:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:25,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:25,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 07:06:25,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:25,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:25,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973242707] [2020-12-22 07:06:25,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:25,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:25,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:25,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:25,191 INFO L87 Difference]: Start difference. First operand 2838 states and 3680 transitions. Second operand 3 states. [2020-12-22 07:06:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:25,871 INFO L93 Difference]: Finished difference Result 6422 states and 8493 transitions. [2020-12-22 07:06:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:25,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-12-22 07:06:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:25,877 INFO L225 Difference]: With dead ends: 6422 [2020-12-22 07:06:25,877 INFO L226 Difference]: Without dead ends: 3753 [2020-12-22 07:06:25,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2020-12-22 07:06:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3662. [2020-12-22 07:06:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3662 states. [2020-12-22 07:06:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 4641 transitions. [2020-12-22 07:06:26,207 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 4641 transitions. Word has length 160 [2020-12-22 07:06:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:26,208 INFO L481 AbstractCegarLoop]: Abstraction has 3662 states and 4641 transitions. [2020-12-22 07:06:26,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 4641 transitions. [2020-12-22 07:06:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-12-22 07:06:26,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:26,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:06:26,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:26,427 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:26,428 INFO L82 PathProgramCache]: Analyzing trace with hash 225096567, now seen corresponding path program 1 times [2020-12-22 07:06:26,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:26,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417490103] [2020-12-22 07:06:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:26,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417490103] [2020-12-22 07:06:26,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756665640] [2020-12-22 07:06:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:26,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:06:26,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:27,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:27,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-12-22 07:06:27,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778431890] [2020-12-22 07:06:27,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:06:27,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:27,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:06:27,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:06:27,046 INFO L87 Difference]: Start difference. First operand 3662 states and 4641 transitions. Second operand 9 states. [2020-12-22 07:06:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:29,483 INFO L93 Difference]: Finished difference Result 18380 states and 23381 transitions. [2020-12-22 07:06:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 07:06:29,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-12-22 07:06:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:29,537 INFO L225 Difference]: With dead ends: 18380 [2020-12-22 07:06:29,538 INFO L226 Difference]: Without dead ends: 14887 [2020-12-22 07:06:29,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 07:06:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14887 states. [2020-12-22 07:06:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14887 to 5193. [2020-12-22 07:06:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5193 states. [2020-12-22 07:06:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 6612 transitions. [2020-12-22 07:06:30,081 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 6612 transitions. Word has length 162 [2020-12-22 07:06:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:30,081 INFO L481 AbstractCegarLoop]: Abstraction has 5193 states and 6612 transitions. [2020-12-22 07:06:30,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:06:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 6612 transitions. [2020-12-22 07:06:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-12-22 07:06:30,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:30,086 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:06:30,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:30,300 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:30,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:30,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2103811804, now seen corresponding path program 1 times [2020-12-22 07:06:30,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:30,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679368693] [2020-12-22 07:06:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 10 proven. 192 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:06:30,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679368693] [2020-12-22 07:06:30,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868814537] [2020-12-22 07:06:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:30,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 07:06:30,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 10 proven. 192 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:06:31,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:31,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-12-22 07:06:31,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152388697] [2020-12-22 07:06:31,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:06:31,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:31,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:06:31,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:06:31,410 INFO L87 Difference]: Start difference. First operand 5193 states and 6612 transitions. Second operand 11 states. [2020-12-22 07:06:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:34,297 INFO L93 Difference]: Finished difference Result 23937 states and 30355 transitions. [2020-12-22 07:06:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-22 07:06:34,298 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-12-22 07:06:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:34,350 INFO L225 Difference]: With dead ends: 23937 [2020-12-22 07:06:34,350 INFO L226 Difference]: Without dead ends: 18913 [2020-12-22 07:06:34,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 278 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 07:06:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18913 states. [2020-12-22 07:06:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18913 to 6601. [2020-12-22 07:06:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6601 states. [2020-12-22 07:06:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 8416 transitions. [2020-12-22 07:06:35,257 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 8416 transitions. Word has length 260 [2020-12-22 07:06:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:35,257 INFO L481 AbstractCegarLoop]: Abstraction has 6601 states and 8416 transitions. [2020-12-22 07:06:35,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:06:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 8416 transitions. [2020-12-22 07:06:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-12-22 07:06:35,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:35,260 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:35,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:35,462 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:35,463 INFO L82 PathProgramCache]: Analyzing trace with hash 705037150, now seen corresponding path program 1 times [2020-12-22 07:06:35,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:35,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668259772] [2020-12-22 07:06:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 15 proven. 448 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 07:06:35,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668259772] [2020-12-22 07:06:35,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260280391] [2020-12-22 07:06:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:36,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 07:06:36,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 15 proven. 448 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 07:06:36,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:36,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-22 07:06:36,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803428383] [2020-12-22 07:06:36,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:06:36,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:36,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:06:36,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:06:36,742 INFO L87 Difference]: Start difference. First operand 6601 states and 8416 transitions. Second operand 13 states. [2020-12-22 07:06:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:41,041 INFO L93 Difference]: Finished difference Result 29573 states and 37442 transitions. [2020-12-22 07:06:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-22 07:06:41,042 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 359 [2020-12-22 07:06:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:41,075 INFO L225 Difference]: With dead ends: 29573 [2020-12-22 07:06:41,075 INFO L226 Difference]: Without dead ends: 23141 [2020-12-22 07:06:41,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 381 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=315, Invalid=2655, Unknown=0, NotChecked=0, Total=2970 [2020-12-22 07:06:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23141 states. [2020-12-22 07:06:42,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23141 to 8011. [2020-12-22 07:06:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8011 states. [2020-12-22 07:06:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8011 states to 8011 states and 10222 transitions. [2020-12-22 07:06:42,047 INFO L78 Accepts]: Start accepts. Automaton has 8011 states and 10222 transitions. Word has length 359 [2020-12-22 07:06:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:42,048 INFO L481 AbstractCegarLoop]: Abstraction has 8011 states and 10222 transitions. [2020-12-22 07:06:42,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:06:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8011 states and 10222 transitions. [2020-12-22 07:06:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-12-22 07:06:42,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:42,053 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-12-22 07:06:42,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:42,267 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:42,268 INFO L82 PathProgramCache]: Analyzing trace with hash -832045976, now seen corresponding path program 1 times [2020-12-22 07:06:42,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:42,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017076981] [2020-12-22 07:06:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 20 proven. 812 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 07:06:42,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017076981] [2020-12-22 07:06:42,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364275229] [2020-12-22 07:06:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:43,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 07:06:43,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 20 proven. 812 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 07:06:43,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:43,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-12-22 07:06:43,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482782914] [2020-12-22 07:06:43,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 07:06:43,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:44,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 07:06:44,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:06:44,008 INFO L87 Difference]: Start difference. First operand 8011 states and 10222 transitions. Second operand 15 states. [2020-12-22 07:06:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:49,805 INFO L93 Difference]: Finished difference Result 35213 states and 44533 transitions. [2020-12-22 07:06:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-12-22 07:06:49,806 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 459 [2020-12-22 07:06:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:49,836 INFO L225 Difference]: With dead ends: 35213 [2020-12-22 07:06:49,836 INFO L226 Difference]: Without dead ends: 27371 [2020-12-22 07:06:49,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 485 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=369, Invalid=3921, Unknown=0, NotChecked=0, Total=4290 [2020-12-22 07:06:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27371 states. [2020-12-22 07:06:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27371 to 9423. [2020-12-22 07:06:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9423 states. [2020-12-22 07:06:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 12030 transitions. [2020-12-22 07:06:51,084 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 12030 transitions. Word has length 459 [2020-12-22 07:06:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:51,085 INFO L481 AbstractCegarLoop]: Abstraction has 9423 states and 12030 transitions. [2020-12-22 07:06:51,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 07:06:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 12030 transitions. [2020-12-22 07:06:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-12-22 07:06:51,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:51,094 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2020-12-22 07:06:51,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 07:06:51,309 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:51,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1426740585, now seen corresponding path program 1 times [2020-12-22 07:06:51,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:51,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621588237] [2020-12-22 07:06:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 912 proven. 398 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 07:06:51,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621588237] [2020-12-22 07:06:51,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453073064] [2020-12-22 07:06:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:52,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 07:06:52,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 1310 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 07:06:53,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:53,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2020-12-22 07:06:53,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468748848] [2020-12-22 07:06:53,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:06:53,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:53,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:06:53,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:06:53,018 INFO L87 Difference]: Start difference. First operand 9423 states and 12030 transitions. Second operand 13 states. [2020-12-22 07:06:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:55,262 INFO L93 Difference]: Finished difference Result 22059 states and 28008 transitions. [2020-12-22 07:06:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 07:06:55,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 560 [2020-12-22 07:06:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:55,277 INFO L225 Difference]: With dead ends: 22059 [2020-12-22 07:06:55,278 INFO L226 Difference]: Without dead ends: 12802 [2020-12-22 07:06:55,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2020-12-22 07:06:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12802 states. [2020-12-22 07:06:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12802 to 9293. [2020-12-22 07:06:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9293 states. [2020-12-22 07:06:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9293 states to 9293 states and 11855 transitions. [2020-12-22 07:06:56,275 INFO L78 Accepts]: Start accepts. Automaton has 9293 states and 11855 transitions. Word has length 560 [2020-12-22 07:06:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:56,276 INFO L481 AbstractCegarLoop]: Abstraction has 9293 states and 11855 transitions. [2020-12-22 07:06:56,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:06:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 9293 states and 11855 transitions. [2020-12-22 07:06:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-12-22 07:06:56,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:56,282 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-12-22 07:06:56,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:56,496 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1627083542, now seen corresponding path program 1 times [2020-12-22 07:06:56,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:56,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409861987] [2020-12-22 07:06:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2020-12-22 07:06:56,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409861987] [2020-12-22 07:06:56,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:56,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:56,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423752378] [2020-12-22 07:06:56,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:56,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:56,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:56,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:56,939 INFO L87 Difference]: Start difference. First operand 9293 states and 11855 transitions. Second operand 3 states. [2020-12-22 07:06:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:57,315 INFO L93 Difference]: Finished difference Result 11318 states and 14188 transitions. [2020-12-22 07:06:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:57,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 561 [2020-12-22 07:06:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:57,319 INFO L225 Difference]: With dead ends: 11318 [2020-12-22 07:06:57,319 INFO L226 Difference]: Without dead ends: 2080 [2020-12-22 07:06:57,325 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 07:06:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-12-22 07:06:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2077. [2020-12-22 07:06:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2020-12-22 07:06:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2303 transitions. [2020-12-22 07:06:57,542 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2303 transitions. Word has length 561 [2020-12-22 07:06:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:57,543 INFO L481 AbstractCegarLoop]: Abstraction has 2077 states and 2303 transitions. [2020-12-22 07:06:57,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2303 transitions. [2020-12-22 07:06:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-12-22 07:06:57,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:57,550 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-12-22 07:06:57,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:06:57,550 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash -312768950, now seen corresponding path program 1 times [2020-12-22 07:06:57,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:57,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360207557] [2020-12-22 07:06:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2020-12-22 07:06:57,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360207557] [2020-12-22 07:06:57,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:57,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:06:57,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236431374] [2020-12-22 07:06:57,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:06:57,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:57,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:06:57,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:06:57,930 INFO L87 Difference]: Start difference. First operand 2077 states and 2303 transitions. Second operand 7 states. [2020-12-22 07:06:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:58,466 INFO L93 Difference]: Finished difference Result 4252 states and 4754 transitions. [2020-12-22 07:06:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:06:58,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-12-22 07:06:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:58,470 INFO L225 Difference]: With dead ends: 4252 [2020-12-22 07:06:58,470 INFO L226 Difference]: Without dead ends: 3328 [2020-12-22 07:06:58,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:06:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2020-12-22 07:06:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 2069. [2020-12-22 07:06:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2020-12-22 07:06:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2285 transitions. [2020-12-22 07:06:58,691 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2285 transitions. Word has length 562 [2020-12-22 07:06:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:58,692 INFO L481 AbstractCegarLoop]: Abstraction has 2069 states and 2285 transitions. [2020-12-22 07:06:58,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:06:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2285 transitions. [2020-12-22 07:06:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-12-22 07:06:58,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:58,698 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-12-22 07:06:58,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:06:58,698 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:58,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash -37977565, now seen corresponding path program 1 times [2020-12-22 07:06:58,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:58,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525197325] [2020-12-22 07:06:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2020-12-22 07:06:59,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525197325] [2020-12-22 07:06:59,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:59,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:06:59,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061325588] [2020-12-22 07:06:59,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:06:59,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:59,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:06:59,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:06:59,037 INFO L87 Difference]: Start difference. First operand 2069 states and 2285 transitions. Second operand 5 states. [2020-12-22 07:06:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:59,459 INFO L93 Difference]: Finished difference Result 3542 states and 3942 transitions. [2020-12-22 07:06:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:06:59,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 563 [2020-12-22 07:06:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:59,462 INFO L225 Difference]: With dead ends: 3542 [2020-12-22 07:06:59,462 INFO L226 Difference]: Without dead ends: 2616 [2020-12-22 07:06:59,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:06:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2020-12-22 07:06:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 1997. [2020-12-22 07:06:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2020-12-22 07:06:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2144 transitions. [2020-12-22 07:06:59,689 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2144 transitions. Word has length 563 [2020-12-22 07:06:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:59,690 INFO L481 AbstractCegarLoop]: Abstraction has 1997 states and 2144 transitions. [2020-12-22 07:06:59,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:06:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2144 transitions. [2020-12-22 07:06:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2020-12-22 07:06:59,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:59,696 INFO L422 BasicCegarLoop]: trace histogram [12, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 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, 1] [2020-12-22 07:06:59,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 07:06:59,697 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:06:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:59,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1142183535, now seen corresponding path program 1 times [2020-12-22 07:06:59,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:59,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446188417] [2020-12-22 07:06:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 118 proven. 393 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2020-12-22 07:07:00,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446188417] [2020-12-22 07:07:00,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838924846] [2020-12-22 07:07:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:01,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 07:07:01,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 120 proven. 323 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2020-12-22 07:07:02,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:02,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 21 [2020-12-22 07:07:02,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756816907] [2020-12-22 07:07:02,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 07:07:02,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 07:07:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-12-22 07:07:02,246 INFO L87 Difference]: Start difference. First operand 1997 states and 2144 transitions. Second operand 21 states. [2020-12-22 07:07:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:03,509 INFO L93 Difference]: Finished difference Result 2311 states and 2482 transitions. [2020-12-22 07:07:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 07:07:03,510 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 618 [2020-12-22 07:07:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:03,512 INFO L225 Difference]: With dead ends: 2311 [2020-12-22 07:07:03,512 INFO L226 Difference]: Without dead ends: 2309 [2020-12-22 07:07:03,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 623 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=1513, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 07:07:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2020-12-22 07:07:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 1997. [2020-12-22 07:07:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2020-12-22 07:07:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2143 transitions. [2020-12-22 07:07:03,773 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2143 transitions. Word has length 618 [2020-12-22 07:07:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:03,774 INFO L481 AbstractCegarLoop]: Abstraction has 1997 states and 2143 transitions. [2020-12-22 07:07:03,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 07:07:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2143 transitions. [2020-12-22 07:07:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-12-22 07:07:03,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:03,780 INFO L422 BasicCegarLoop]: trace histogram [13, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:07:03,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 07:07:03,981 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:03,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1804738143, now seen corresponding path program 1 times [2020-12-22 07:07:03,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:03,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218138709] [2020-12-22 07:07:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 337 proven. 47 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2020-12-22 07:07:04,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218138709] [2020-12-22 07:07:04,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760720841] [2020-12-22 07:07:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:04,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:07:04,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 337 proven. 47 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2020-12-22 07:07:05,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:05,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-12-22 07:07:05,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485541119] [2020-12-22 07:07:05,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:07:05,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:05,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:07:05,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:07:05,625 INFO L87 Difference]: Start difference. First operand 1997 states and 2143 transitions. Second operand 9 states. [2020-12-22 07:07:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:06,330 INFO L93 Difference]: Finished difference Result 3367 states and 3619 transitions. [2020-12-22 07:07:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:07:06,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 667 [2020-12-22 07:07:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:06,333 INFO L225 Difference]: With dead ends: 3367 [2020-12-22 07:07:06,333 INFO L226 Difference]: Without dead ends: 2692 [2020-12-22 07:07:06,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 675 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:07:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-12-22 07:07:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1991. [2020-12-22 07:07:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-12-22 07:07:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2127 transitions. [2020-12-22 07:07:06,585 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2127 transitions. Word has length 667 [2020-12-22 07:07:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:06,586 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2127 transitions. [2020-12-22 07:07:06,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:07:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2127 transitions. [2020-12-22 07:07:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2020-12-22 07:07:06,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:06,594 INFO L422 BasicCegarLoop]: trace histogram [14, 10, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:07:06,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 07:07:06,808 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:06,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1673506766, now seen corresponding path program 1 times [2020-12-22 07:07:06,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:06,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216424926] [2020-12-22 07:07:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 223 proven. 987 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2020-12-22 07:07:08,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216424926] [2020-12-22 07:07:08,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823159020] [2020-12-22 07:07:08,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:08,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 07:07:08,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 307 proven. 849 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-12-22 07:07:10,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:10,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 32 [2020-12-22 07:07:10,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339253036] [2020-12-22 07:07:10,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 07:07:10,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:10,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 07:07:10,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2020-12-22 07:07:10,189 INFO L87 Difference]: Start difference. First operand 1991 states and 2127 transitions. Second operand 32 states. [2020-12-22 07:07:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:11,891 INFO L93 Difference]: Finished difference Result 2237 states and 2390 transitions. [2020-12-22 07:07:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 07:07:11,891 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 724 [2020-12-22 07:07:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:11,894 INFO L225 Difference]: With dead ends: 2237 [2020-12-22 07:07:11,894 INFO L226 Difference]: Without dead ends: 2235 [2020-12-22 07:07:11,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 726 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=435, Invalid=3347, Unknown=0, NotChecked=0, Total=3782 [2020-12-22 07:07:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-12-22 07:07:12,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1991. [2020-12-22 07:07:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-12-22 07:07:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2126 transitions. [2020-12-22 07:07:12,136 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2126 transitions. Word has length 724 [2020-12-22 07:07:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:12,136 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2126 transitions. [2020-12-22 07:07:12,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 07:07:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2126 transitions. [2020-12-22 07:07:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-12-22 07:07:12,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:12,144 INFO L422 BasicCegarLoop]: trace histogram [15, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:07:12,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:12,359 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash -187150814, now seen corresponding path program 1 times [2020-12-22 07:07:12,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:12,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413893320] [2020-12-22 07:07:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 568 proven. 208 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2020-12-22 07:07:13,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413893320] [2020-12-22 07:07:13,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618624577] [2020-12-22 07:07:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:13,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 07:07:13,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 568 proven. 208 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2020-12-22 07:07:14,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:14,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-12-22 07:07:14,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902525846] [2020-12-22 07:07:14,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:07:14,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:14,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:07:14,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:07:14,659 INFO L87 Difference]: Start difference. First operand 1991 states and 2126 transitions. Second operand 11 states. [2020-12-22 07:07:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:15,534 INFO L93 Difference]: Finished difference Result 3003 states and 3216 transitions. [2020-12-22 07:07:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 07:07:15,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 773 [2020-12-22 07:07:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:15,538 INFO L225 Difference]: With dead ends: 3003 [2020-12-22 07:07:15,538 INFO L226 Difference]: Without dead ends: 2519 [2020-12-22 07:07:15,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 784 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:07:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2020-12-22 07:07:15,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 1987. [2020-12-22 07:07:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-12-22 07:07:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2112 transitions. [2020-12-22 07:07:15,781 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2112 transitions. Word has length 773 [2020-12-22 07:07:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:15,781 INFO L481 AbstractCegarLoop]: Abstraction has 1987 states and 2112 transitions. [2020-12-22 07:07:15,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:07:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2112 transitions. [2020-12-22 07:07:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2020-12-22 07:07:15,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:15,787 INFO L422 BasicCegarLoop]: trace histogram [16, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 07:07:15,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 07:07:15,991 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1604741410, now seen corresponding path program 1 times [2020-12-22 07:07:15,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:15,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221225394] [2020-12-22 07:07:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 182 proven. 1738 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-12-22 07:07:17,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221225394] [2020-12-22 07:07:17,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743565069] [2020-12-22 07:07:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:18,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 07:07:18,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 406 proven. 1478 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-12-22 07:07:20,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:20,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 38 [2020-12-22 07:07:20,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742679926] [2020-12-22 07:07:20,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-22 07:07:20,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:20,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-22 07:07:20,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 07:07:20,497 INFO L87 Difference]: Start difference. First operand 1987 states and 2112 transitions. Second operand 38 states. [2020-12-22 07:07:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:22,964 INFO L93 Difference]: Finished difference Result 2243 states and 2385 transitions. [2020-12-22 07:07:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-22 07:07:22,964 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 831 [2020-12-22 07:07:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:22,968 INFO L225 Difference]: With dead ends: 2243 [2020-12-22 07:07:22,968 INFO L226 Difference]: Without dead ends: 2241 [2020-12-22 07:07:22,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 835 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=507, Invalid=4895, Unknown=0, NotChecked=0, Total=5402 [2020-12-22 07:07:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2020-12-22 07:07:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1987. [2020-12-22 07:07:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-12-22 07:07:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2111 transitions. [2020-12-22 07:07:23,238 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2111 transitions. Word has length 831 [2020-12-22 07:07:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:23,238 INFO L481 AbstractCegarLoop]: Abstraction has 1987 states and 2111 transitions. [2020-12-22 07:07:23,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-22 07:07:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2111 transitions. [2020-12-22 07:07:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-12-22 07:07:23,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:23,246 INFO L422 BasicCegarLoop]: trace histogram [17, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:23,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:23,447 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:23,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:23,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2120824654, now seen corresponding path program 1 times [2020-12-22 07:07:23,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:23,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975107896] [2020-12-22 07:07:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 799 proven. 484 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-12-22 07:07:24,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975107896] [2020-12-22 07:07:24,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951525919] [2020-12-22 07:07:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:24,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2395 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 07:07:25,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 799 proven. 484 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-12-22 07:07:26,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:26,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-22 07:07:26,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287444434] [2020-12-22 07:07:26,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:07:26,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:26,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:07:26,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:07:26,442 INFO L87 Difference]: Start difference. First operand 1987 states and 2111 transitions. Second operand 13 states. [2020-12-22 07:07:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:27,562 INFO L93 Difference]: Finished difference Result 2641 states and 2815 transitions. [2020-12-22 07:07:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 07:07:27,563 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 880 [2020-12-22 07:07:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:27,567 INFO L225 Difference]: With dead ends: 2641 [2020-12-22 07:07:27,567 INFO L226 Difference]: Without dead ends: 2348 [2020-12-22 07:07:27,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 894 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2020-12-22 07:07:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2020-12-22 07:07:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 1985. [2020-12-22 07:07:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1985 states. [2020-12-22 07:07:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2099 transitions. [2020-12-22 07:07:27,822 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2099 transitions. Word has length 880 [2020-12-22 07:07:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:27,823 INFO L481 AbstractCegarLoop]: Abstraction has 1985 states and 2099 transitions. [2020-12-22 07:07:27,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:07:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2099 transitions. [2020-12-22 07:07:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2020-12-22 07:07:27,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:27,830 INFO L422 BasicCegarLoop]: trace histogram [18, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:28,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 07:07:28,032 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:28,034 INFO L82 PathProgramCache]: Analyzing trace with hash 957864572, now seen corresponding path program 1 times [2020-12-22 07:07:28,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:28,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060304898] [2020-12-22 07:07:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 141 proven. 2498 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-12-22 07:07:30,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060304898] [2020-12-22 07:07:30,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828230329] [2020-12-22 07:07:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:30,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 69 conjunts are in the unsatisfiable core [2020-12-22 07:07:30,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 413 proven. 2208 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-12-22 07:07:33,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:33,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 44 [2020-12-22 07:07:33,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683395802] [2020-12-22 07:07:33,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-22 07:07:33,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:33,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-22 07:07:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1774, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 07:07:33,898 INFO L87 Difference]: Start difference. First operand 1985 states and 2099 transitions. Second operand 44 states. [2020-12-22 07:07:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:37,146 INFO L93 Difference]: Finished difference Result 2251 states and 2382 transitions. [2020-12-22 07:07:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-22 07:07:37,147 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 939 [2020-12-22 07:07:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:37,151 INFO L225 Difference]: With dead ends: 2251 [2020-12-22 07:07:37,151 INFO L226 Difference]: Without dead ends: 2249 [2020-12-22 07:07:37,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 945 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=568, Invalid=6572, Unknown=0, NotChecked=0, Total=7140 [2020-12-22 07:07:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2020-12-22 07:07:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1985. [2020-12-22 07:07:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1985 states. [2020-12-22 07:07:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2098 transitions. [2020-12-22 07:07:37,423 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2098 transitions. Word has length 939 [2020-12-22 07:07:37,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:37,424 INFO L481 AbstractCegarLoop]: Abstraction has 1985 states and 2098 transitions. [2020-12-22 07:07:37,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-22 07:07:37,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2098 transitions. [2020-12-22 07:07:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-12-22 07:07:37,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:37,432 INFO L422 BasicCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-22 07:07:37,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:37,633 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash -250589900, now seen corresponding path program 1 times [2020-12-22 07:07:37,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:37,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065885733] [2020-12-22 07:07:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 1030 proven. 876 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2020-12-22 07:07:39,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065885733] [2020-12-22 07:07:39,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210478399] [2020-12-22 07:07:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:39,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 07:07:39,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 1030 proven. 876 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2020-12-22 07:07:41,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:41,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-12-22 07:07:41,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527764252] [2020-12-22 07:07:41,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 07:07:41,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:41,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 07:07:41,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:07:41,347 INFO L87 Difference]: Start difference. First operand 1985 states and 2098 transitions. Second operand 15 states. [2020-12-22 07:07:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:42,726 INFO L93 Difference]: Finished difference Result 2356 states and 2500 transitions. [2020-12-22 07:07:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 07:07:42,726 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 988 [2020-12-22 07:07:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:42,729 INFO L225 Difference]: With dead ends: 2356 [2020-12-22 07:07:42,729 INFO L226 Difference]: Without dead ends: 2254 [2020-12-22 07:07:42,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1004 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2020-12-22 07:07:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-12-22 07:07:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1983. [2020-12-22 07:07:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-12-22 07:07:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2087 transitions. [2020-12-22 07:07:42,992 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2087 transitions. Word has length 988 [2020-12-22 07:07:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:42,992 INFO L481 AbstractCegarLoop]: Abstraction has 1983 states and 2087 transitions. [2020-12-22 07:07:42,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 07:07:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2087 transitions. [2020-12-22 07:07:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2020-12-22 07:07:43,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:43,001 INFO L422 BasicCegarLoop]: trace histogram [20, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-22 07:07:43,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 07:07:43,212 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:07:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash 198975503, now seen corresponding path program 1 times [2020-12-22 07:07:43,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:43,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127750506] [2020-12-22 07:07:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3399 backedges. 100 proven. 3266 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-22 07:07:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127750506] [2020-12-22 07:07:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339801553] [2020-12-22 07:07:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:46,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 81 conjunts are in the unsatisfiable core [2020-12-22 07:07:46,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3399 backedges. 328 proven. 3038 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-22 07:07:50,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:50,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 50 [2020-12-22 07:07:50,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347024489] [2020-12-22 07:07:50,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-12-22 07:07:50,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:50,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-12-22 07:07:50,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2314, Unknown=0, NotChecked=0, Total=2450 [2020-12-22 07:07:50,261 INFO L87 Difference]: Start difference. First operand 1983 states and 2087 transitions. Second operand 50 states. [2020-12-22 07:07:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:55,089 INFO L93 Difference]: Finished difference Result 2254 states and 2376 transitions. [2020-12-22 07:07:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-12-22 07:07:55,089 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 1048 [2020-12-22 07:07:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:55,090 INFO L225 Difference]: With dead ends: 2254 [2020-12-22 07:07:55,090 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 07:07:55,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1062 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=760, Invalid=9952, Unknown=0, NotChecked=0, Total=10712 [2020-12-22 07:07:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 07:07:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 07:07:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 07:07:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 07:07:55,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1048 [2020-12-22 07:07:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:55,094 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 07:07:55,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-12-22 07:07:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 07:07:55,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 07:07:55,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 07:07:55,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 07:08:00,260 WARN L197 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 860 DAG size of output: 686 [2020-12-22 07:08:03,584 WARN L197 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 860 DAG size of output: 686 [2020-12-22 07:08:04,883 WARN L197 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 721 DAG size of output: 613 [2020-12-22 07:08:13,348 WARN L197 SmtUtils]: Spent 8.46 s on a formula simplification. DAG size of input: 1648 DAG size of output: 1331 [2020-12-22 07:08:13,499 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 213 [2020-12-22 07:08:14,656 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 721 DAG size of output: 613 [2020-12-22 07:08:15,770 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 698 DAG size of output: 566 [2020-12-22 07:08:18,941 WARN L197 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 830 DAG size of output: 662 [2020-12-22 07:08:19,177 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 246 [2020-12-22 07:08:22,310 WARN L197 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 860 DAG size of output: 686 [2020-12-22 07:08:22,541 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 246 [2020-12-22 07:08:22,863 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 253 [2020-12-22 07:08:23,097 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 247 [2020-12-22 07:08:26,214 WARN L197 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 842 DAG size of output: 711 [2020-12-22 07:08:26,450 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 246 [2020-12-22 07:08:26,583 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 216 [2020-12-22 07:08:29,731 WARN L197 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 842 DAG size of output: 711 [2020-12-22 07:08:29,861 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 213 [2020-12-22 07:08:31,011 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 721 DAG size of output: 613 [2020-12-22 07:08:31,131 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 202 [2020-12-22 07:08:32,189 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 698 DAG size of output: 591 [2020-12-22 07:08:32,318 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 213 [2020-12-22 07:08:32,586 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 214 [2020-12-22 07:08:33,751 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 721 DAG size of output: 613 [2020-12-22 07:08:34,071 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 287 [2020-12-22 07:08:34,302 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 246 [2020-12-22 07:08:38,784 WARN L197 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 909 DAG size of output: 763 [2020-12-22 07:08:39,141 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 265 [2020-12-22 07:08:39,496 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 265 [2020-12-22 07:08:39,747 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 232 [2020-12-22 07:08:42,678 WARN L197 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 842 DAG size of output: 711 [2020-12-22 07:08:42,791 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 215 [2020-12-22 07:08:42,997 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 243 [2020-12-22 07:08:45,982 WARN L197 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 842 DAG size of output: 711 [2020-12-22 07:08:46,094 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 215 [2020-12-22 07:08:47,427 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 737 DAG size of output: 635 [2020-12-22 07:08:47,557 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 213 [2020-12-22 07:08:48,642 WARN L197 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 721 DAG size of output: 613 [2020-12-22 07:08:48,802 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 213 [2020-12-22 07:08:49,822 WARN L197 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 159 [2020-12-22 07:08:50,287 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 291 [2020-12-22 07:08:50,581 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 249 [2020-12-22 07:09:01,780 WARN L197 SmtUtils]: Spent 11.19 s on a formula simplification. DAG size of input: 1962 DAG size of output: 1597 [2020-12-22 07:09:05,726 WARN L197 SmtUtils]: Spent 3.87 s on a formula simplification. DAG size of input: 965 DAG size of output: 724 [2020-12-22 07:09:08,591 WARN L197 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 842 DAG size of output: 711 [2020-12-22 07:09:08,707 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 215 [2020-12-22 07:09:09,008 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 249 [2020-12-22 07:09:09,169 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 213 [2020-12-22 07:09:09,282 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 215 [2020-12-22 07:09:09,570 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 249 [2020-12-22 07:09:10,178 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 436 DAG size of output: 359 [2020-12-22 07:09:10,386 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 248 [2020-12-22 07:09:10,597 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 253 [2020-12-22 07:09:11,882 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 454 DAG size of output: 401 [2020-12-22 07:09:14,843 WARN L197 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 842 DAG size of output: 711 [2020-12-22 07:09:15,616 WARN L197 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 410 [2020-12-22 07:09:18,264 WARN L197 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 704 DAG size of output: 607 [2020-12-22 07:09:18,375 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 215 [2020-12-22 07:09:21,272 WARN L197 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 860 DAG size of output: 686 [2020-12-22 07:09:21,388 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 215 [2020-12-22 07:09:21,508 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 189 [2020-12-22 07:09:21,653 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 219 [2020-12-22 07:09:24,642 WARN L197 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 860 DAG size of output: 686 [2020-12-22 07:09:24,837 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 229 [2020-12-22 07:09:25,050 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 276 [2020-12-22 07:09:28,122 WARN L197 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 874 DAG size of output: 714 [2020-12-22 07:09:29,217 WARN L197 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 557 DAG size of output: 467 [2020-12-22 07:09:30,013 WARN L197 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 447 DAG size of output: 404 [2020-12-22 07:09:40,426 WARN L197 SmtUtils]: Spent 10.26 s on a formula simplification. DAG size of input: 646 DAG size of output: 203 [2020-12-22 07:09:50,721 WARN L197 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 646 DAG size of output: 203 [2020-12-22 07:09:50,856 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:09:50,991 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:09:51,342 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2020-12-22 07:09:58,808 WARN L197 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 560 DAG size of output: 186