/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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:33:35,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:33:35,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:33:35,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:33:35,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:33:35,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:33:35,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:33:35,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:33:35,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:33:35,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:33:35,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:33:35,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 08:33:35,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:33:36,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:33:36,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:33:36,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:33:36,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:33:36,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:33:36,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:33:36,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:33:36,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:33:36,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:33:36,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:33:36,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:33:36,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:33:36,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:33:36,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:33:36,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:33:36,067 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:33:36,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:33:36,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:33:36,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:33:36,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:33:36,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:33:36,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:33:36,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:33:36,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:33:36,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:33:36,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:33:36,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:33:36,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:33:36,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:33:36,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:33:36,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:33:36,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:33:36,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:33:36,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:33:36,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:33:36,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:33:36,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:33:36,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:33:36,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:33:36,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:33:36,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:33:36,572 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:33:36,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:33:36,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e02f9985/ca8d883f5ee34c28a281a582f9af8442/FLAG89b1c53d3 [2020-12-22 08:33:37,315 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:33:37,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:33:37,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e02f9985/ca8d883f5ee34c28a281a582f9af8442/FLAG89b1c53d3 [2020-12-22 08:33:37,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e02f9985/ca8d883f5ee34c28a281a582f9af8442 [2020-12-22 08:33:37,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:33:37,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:33:37,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:33:37,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:33:37,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:33:37,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:33:37" (1/1) ... [2020-12-22 08:33:37,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c786738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:37, skipping insertion in model container [2020-12-22 08:33:37,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:33:37" (1/1) ... [2020-12-22 08:33:37,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:33:37,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:33:37,924 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6961,6974] [2020-12-22 08:33:37,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:33:37,993 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:33:38,085 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6961,6974] [2020-12-22 08:33:38,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:33:38,151 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:33:38,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38 WrapperNode [2020-12-22 08:33:38,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:33:38,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:33:38,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:33:38,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:33:38,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:33:38,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:33:38,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:33:38,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:33:38,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (1/1) ... [2020-12-22 08:33:38,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:33:38,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:33:38,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:33:38,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:33:38,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (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 08:33:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:33:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:33:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:33:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:33:39,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:33:39,467 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:33:39,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:33:39 BoogieIcfgContainer [2020-12-22 08:33:39,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:33:39,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:33:39,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:33:39,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:33:39,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:33:37" (1/3) ... [2020-12-22 08:33:39,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b99b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:33:39, skipping insertion in model container [2020-12-22 08:33:39,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:38" (2/3) ... [2020-12-22 08:33:39,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b99b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:33:39, skipping insertion in model container [2020-12-22 08:33:39,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:33:39" (3/3) ... [2020-12-22 08:33:39,491 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:33:39,500 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:33:39,507 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:33:39,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:33:39,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:33:39,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:33:39,562 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:33:39,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:33:39,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:33:39,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:33:39,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:33:39,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:33:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-12-22 08:33:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:33:39,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:39,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:39,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:39,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1878373097, now seen corresponding path program 1 times [2020-12-22 08:33:39,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:39,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676262150] [2020-12-22 08:33:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:40,156 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 08:33:40,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676262150] [2020-12-22 08:33:40,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:40,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:40,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006819205] [2020-12-22 08:33:40,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:40,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:40,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:40,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:40,215 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2020-12-22 08:33:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:40,364 INFO L93 Difference]: Finished difference Result 370 states and 603 transitions. [2020-12-22 08:33:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:40,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:33:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:40,384 INFO L225 Difference]: With dead ends: 370 [2020-12-22 08:33:40,384 INFO L226 Difference]: Without dead ends: 250 [2020-12-22 08:33:40,388 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 08:33:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-22 08:33:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-12-22 08:33:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-22 08:33:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 370 transitions. [2020-12-22 08:33:40,462 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 370 transitions. Word has length 73 [2020-12-22 08:33:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:40,463 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 370 transitions. [2020-12-22 08:33:40,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:40,463 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 370 transitions. [2020-12-22 08:33:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:33:40,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:40,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:40,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:33:40,468 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:40,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:40,469 INFO L82 PathProgramCache]: Analyzing trace with hash 32941141, now seen corresponding path program 1 times [2020-12-22 08:33:40,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:40,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484962509] [2020-12-22 08:33:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:40,676 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 08:33:40,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484962509] [2020-12-22 08:33:40,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:40,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:40,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131685713] [2020-12-22 08:33:40,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:40,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:40,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:40,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:40,683 INFO L87 Difference]: Start difference. First operand 248 states and 370 transitions. Second operand 3 states. [2020-12-22 08:33:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:40,768 INFO L93 Difference]: Finished difference Result 624 states and 970 transitions. [2020-12-22 08:33:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:40,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:33:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:40,774 INFO L225 Difference]: With dead ends: 624 [2020-12-22 08:33:40,775 INFO L226 Difference]: Without dead ends: 420 [2020-12-22 08:33:40,777 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 08:33:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-12-22 08:33:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2020-12-22 08:33:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-22 08:33:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 641 transitions. [2020-12-22 08:33:40,837 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 641 transitions. Word has length 74 [2020-12-22 08:33:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:40,838 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 641 transitions. [2020-12-22 08:33:40,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 641 transitions. [2020-12-22 08:33:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:33:40,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:40,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:40,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:33:40,842 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2013184178, now seen corresponding path program 1 times [2020-12-22 08:33:40,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:40,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788502176] [2020-12-22 08:33:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:40,958 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 08:33:40,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788502176] [2020-12-22 08:33:40,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:40,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:40,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387569413] [2020-12-22 08:33:40,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:40,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:40,962 INFO L87 Difference]: Start difference. First operand 418 states and 641 transitions. Second operand 3 states. [2020-12-22 08:33:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:41,062 INFO L93 Difference]: Finished difference Result 1102 states and 1731 transitions. [2020-12-22 08:33:41,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:41,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:33:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:41,071 INFO L225 Difference]: With dead ends: 1102 [2020-12-22 08:33:41,072 INFO L226 Difference]: Without dead ends: 728 [2020-12-22 08:33:41,077 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 08:33:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-12-22 08:33:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 726. [2020-12-22 08:33:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2020-12-22 08:33:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1129 transitions. [2020-12-22 08:33:41,163 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1129 transitions. Word has length 75 [2020-12-22 08:33:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:41,163 INFO L481 AbstractCegarLoop]: Abstraction has 726 states and 1129 transitions. [2020-12-22 08:33:41,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1129 transitions. [2020-12-22 08:33:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:33:41,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:41,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:41,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:33:41,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:41,169 INFO L82 PathProgramCache]: Analyzing trace with hash -360572760, now seen corresponding path program 1 times [2020-12-22 08:33:41,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:41,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773328263] [2020-12-22 08:33:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:41,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773328263] [2020-12-22 08:33:41,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:41,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:41,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830555965] [2020-12-22 08:33:41,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:41,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:41,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:41,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:41,296 INFO L87 Difference]: Start difference. First operand 726 states and 1129 transitions. Second operand 3 states. [2020-12-22 08:33:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:41,418 INFO L93 Difference]: Finished difference Result 1962 states and 3091 transitions. [2020-12-22 08:33:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:41,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:33:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:41,430 INFO L225 Difference]: With dead ends: 1962 [2020-12-22 08:33:41,431 INFO L226 Difference]: Without dead ends: 1280 [2020-12-22 08:33:41,433 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 08:33:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-12-22 08:33:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1278. [2020-12-22 08:33:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-12-22 08:33:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1997 transitions. [2020-12-22 08:33:41,513 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1997 transitions. Word has length 76 [2020-12-22 08:33:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:41,514 INFO L481 AbstractCegarLoop]: Abstraction has 1278 states and 1997 transitions. [2020-12-22 08:33:41,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1997 transitions. [2020-12-22 08:33:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:33:41,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:41,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:41,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:33:41,520 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:41,520 INFO L82 PathProgramCache]: Analyzing trace with hash 25557647, now seen corresponding path program 1 times [2020-12-22 08:33:41,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:41,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080191810] [2020-12-22 08:33:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:41,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080191810] [2020-12-22 08:33:41,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:41,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:41,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430154070] [2020-12-22 08:33:41,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:41,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:41,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:41,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:41,659 INFO L87 Difference]: Start difference. First operand 1278 states and 1997 transitions. Second operand 3 states. [2020-12-22 08:33:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:41,789 INFO L93 Difference]: Finished difference Result 3490 states and 5487 transitions. [2020-12-22 08:33:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:41,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:33:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:41,805 INFO L225 Difference]: With dead ends: 3490 [2020-12-22 08:33:41,805 INFO L226 Difference]: Without dead ends: 2256 [2020-12-22 08:33:41,808 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 08:33:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2020-12-22 08:33:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2254. [2020-12-22 08:33:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-12-22 08:33:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3517 transitions. [2020-12-22 08:33:41,988 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3517 transitions. Word has length 77 [2020-12-22 08:33:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:41,989 INFO L481 AbstractCegarLoop]: Abstraction has 2254 states and 3517 transitions. [2020-12-22 08:33:41,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3517 transitions. [2020-12-22 08:33:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:33:41,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:41,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:41,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:33:41,991 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:41,992 INFO L82 PathProgramCache]: Analyzing trace with hash 551922959, now seen corresponding path program 1 times [2020-12-22 08:33:41,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:41,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923754179] [2020-12-22 08:33:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:42,311 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 08:33:42,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923754179] [2020-12-22 08:33:42,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:42,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:33:42,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354426231] [2020-12-22 08:33:42,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:33:42,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:42,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:33:42,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:42,314 INFO L87 Difference]: Start difference. First operand 2254 states and 3517 transitions. Second operand 8 states. [2020-12-22 08:33:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:43,519 INFO L93 Difference]: Finished difference Result 13674 states and 21315 transitions. [2020-12-22 08:33:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:33:43,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-22 08:33:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:43,585 INFO L225 Difference]: With dead ends: 13674 [2020-12-22 08:33:43,585 INFO L226 Difference]: Without dead ends: 11464 [2020-12-22 08:33:43,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2020-12-22 08:33:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11454. [2020-12-22 08:33:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11454 states. [2020-12-22 08:33:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 17805 transitions. [2020-12-22 08:33:44,752 INFO L78 Accepts]: Start accepts. Automaton has 11454 states and 17805 transitions. Word has length 78 [2020-12-22 08:33:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:44,752 INFO L481 AbstractCegarLoop]: Abstraction has 11454 states and 17805 transitions. [2020-12-22 08:33:44,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:33:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 11454 states and 17805 transitions. [2020-12-22 08:33:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:33:44,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:44,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:44,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:33:44,754 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:44,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:44,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1269976494, now seen corresponding path program 1 times [2020-12-22 08:33:44,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:44,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896988132] [2020-12-22 08:33:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:44,858 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 08:33:44,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896988132] [2020-12-22 08:33:44,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:44,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:44,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729487449] [2020-12-22 08:33:44,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:44,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:44,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:44,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:44,864 INFO L87 Difference]: Start difference. First operand 11454 states and 17805 transitions. Second operand 3 states. [2020-12-22 08:33:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:46,385 INFO L93 Difference]: Finished difference Result 32162 states and 49871 transitions. [2020-12-22 08:33:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:46,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:33:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:46,480 INFO L225 Difference]: With dead ends: 32162 [2020-12-22 08:33:46,480 INFO L226 Difference]: Without dead ends: 20752 [2020-12-22 08:33:46,501 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 08:33:46,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20752 states. [2020-12-22 08:33:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20752 to 20750. [2020-12-22 08:33:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20750 states. [2020-12-22 08:33:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20750 states to 20750 states and 31917 transitions. [2020-12-22 08:33:48,173 INFO L78 Accepts]: Start accepts. Automaton has 20750 states and 31917 transitions. Word has length 78 [2020-12-22 08:33:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:48,173 INFO L481 AbstractCegarLoop]: Abstraction has 20750 states and 31917 transitions. [2020-12-22 08:33:48,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 20750 states and 31917 transitions. [2020-12-22 08:33:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:33:48,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:48,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:48,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:33:48,176 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:48,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1961103994, now seen corresponding path program 1 times [2020-12-22 08:33:48,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:48,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373326690] [2020-12-22 08:33:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:48,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373326690] [2020-12-22 08:33:48,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:48,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:48,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433574192] [2020-12-22 08:33:48,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:33:48,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:48,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:33:48,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:48,346 INFO L87 Difference]: Start difference. First operand 20750 states and 31917 transitions. Second operand 6 states. [2020-12-22 08:33:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:52,279 INFO L93 Difference]: Finished difference Result 81748 states and 125616 transitions. [2020-12-22 08:33:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:52,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 08:33:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:52,473 INFO L225 Difference]: With dead ends: 81748 [2020-12-22 08:33:52,473 INFO L226 Difference]: Without dead ends: 61042 [2020-12-22 08:33:52,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61042 states. [2020-12-22 08:33:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61042 to 61038. [2020-12-22 08:33:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61038 states. [2020-12-22 08:33:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61038 states to 61038 states and 93421 transitions. [2020-12-22 08:33:56,491 INFO L78 Accepts]: Start accepts. Automaton has 61038 states and 93421 transitions. Word has length 80 [2020-12-22 08:33:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:56,491 INFO L481 AbstractCegarLoop]: Abstraction has 61038 states and 93421 transitions. [2020-12-22 08:33:56,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:33:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 61038 states and 93421 transitions. [2020-12-22 08:33:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:33:56,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:56,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:56,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:33:56,493 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:56,494 INFO L82 PathProgramCache]: Analyzing trace with hash -343599103, now seen corresponding path program 1 times [2020-12-22 08:33:56,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:56,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068160542] [2020-12-22 08:33:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:56,637 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 08:33:56,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068160542] [2020-12-22 08:33:56,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:56,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:33:56,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098311156] [2020-12-22 08:33:56,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:33:56,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:56,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:33:56,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:56,640 INFO L87 Difference]: Start difference. First operand 61038 states and 93421 transitions. Second operand 8 states. [2020-12-22 08:34:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:09,722 INFO L93 Difference]: Finished difference Result 343996 states and 527188 transitions. [2020-12-22 08:34:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:34:09,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 08:34:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:10,725 INFO L225 Difference]: With dead ends: 343996 [2020-12-22 08:34:10,725 INFO L226 Difference]: Without dead ends: 283002 [2020-12-22 08:34:10,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:34:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283002 states. [2020-12-22 08:34:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283002 to 122030. [2020-12-22 08:34:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122030 states. [2020-12-22 08:34:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122030 states to 122030 states and 184493 transitions. [2020-12-22 08:34:20,440 INFO L78 Accepts]: Start accepts. Automaton has 122030 states and 184493 transitions. Word has length 80 [2020-12-22 08:34:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:20,440 INFO L481 AbstractCegarLoop]: Abstraction has 122030 states and 184493 transitions. [2020-12-22 08:34:20,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:34:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 122030 states and 184493 transitions. [2020-12-22 08:34:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:34:20,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:20,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:20,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:34:20,443 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:20,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2081093798, now seen corresponding path program 1 times [2020-12-22 08:34:20,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:20,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320775624] [2020-12-22 08:34:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:20,781 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 08:34:20,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320775624] [2020-12-22 08:34:20,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:20,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:34:20,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675114508] [2020-12-22 08:34:20,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:34:20,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:20,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:34:20,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:34:20,786 INFO L87 Difference]: Start difference. First operand 122030 states and 184493 transitions. Second operand 5 states. [2020-12-22 08:34:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:34,794 INFO L93 Difference]: Finished difference Result 248624 states and 373550 transitions. [2020-12-22 08:34:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:34:34,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:34:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:35,262 INFO L225 Difference]: With dead ends: 248624 [2020-12-22 08:34:35,263 INFO L226 Difference]: Without dead ends: 248622 [2020-12-22 08:34:35,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248622 states. [2020-12-22 08:34:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248622 to 126638. [2020-12-22 08:34:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126638 states. [2020-12-22 08:34:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126638 states to 126638 states and 189101 transitions. [2020-12-22 08:34:45,585 INFO L78 Accepts]: Start accepts. Automaton has 126638 states and 189101 transitions. Word has length 81 [2020-12-22 08:34:45,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:45,585 INFO L481 AbstractCegarLoop]: Abstraction has 126638 states and 189101 transitions. [2020-12-22 08:34:45,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:34:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 126638 states and 189101 transitions. [2020-12-22 08:34:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:34:45,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:45,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:45,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:34:45,587 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:45,588 INFO L82 PathProgramCache]: Analyzing trace with hash -78825167, now seen corresponding path program 1 times [2020-12-22 08:34:45,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:45,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912947240] [2020-12-22 08:34:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:45,657 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 08:34:45,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912947240] [2020-12-22 08:34:45,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:45,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:45,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026597966] [2020-12-22 08:34:45,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:45,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:45,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:45,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:45,660 INFO L87 Difference]: Start difference. First operand 126638 states and 189101 transitions. Second operand 3 states. [2020-12-22 08:34:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:58,121 INFO L93 Difference]: Finished difference Result 310084 states and 462801 transitions. [2020-12-22 08:34:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:58,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 08:34:58,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:58,418 INFO L225 Difference]: With dead ends: 310084 [2020-12-22 08:34:58,418 INFO L226 Difference]: Without dead ends: 183490 [2020-12-22 08:34:58,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 08:34:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183490 states. [2020-12-22 08:35:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183490 to 183488. [2020-12-22 08:35:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183488 states. [2020-12-22 08:35:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183488 states to 183488 states and 272687 transitions. [2020-12-22 08:35:12,510 INFO L78 Accepts]: Start accepts. Automaton has 183488 states and 272687 transitions. Word has length 82 [2020-12-22 08:35:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:12,510 INFO L481 AbstractCegarLoop]: Abstraction has 183488 states and 272687 transitions. [2020-12-22 08:35:12,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 183488 states and 272687 transitions. [2020-12-22 08:35:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:35:12,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:12,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:12,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:35:12,578 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:12,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1944041502, now seen corresponding path program 1 times [2020-12-22 08:35:12,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:12,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879105738] [2020-12-22 08:35:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:12,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879105738] [2020-12-22 08:35:12,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502959232] [2020-12-22 08:35:12,995 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 08:35:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:13,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 08:35:13,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:35:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:35:13,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:35:13,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2020-12-22 08:35:13,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589562924] [2020-12-22 08:35:13,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:35:13,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:13,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:35:13,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:35:13,522 INFO L87 Difference]: Start difference. First operand 183488 states and 272687 transitions. Second operand 13 states.