/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/product-lines/elevator_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:59:47,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:59:47,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:59:47,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:59:47,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:59:47,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:59:47,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:59:47,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:59:47,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:59:47,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:59:47,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:59:47,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:59:47,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:59:47,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:59:47,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:59:47,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:59:47,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:59:47,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:59:47,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:59:47,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:59:47,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:59:47,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:59:47,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:59:47,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:59:47,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:59:47,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:59:47,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:59:47,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:59:47,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:59:47,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:59:47,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:59:47,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:59:47,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:59:47,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:59:47,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:59:47,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:59:47,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:59:47,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:59:47,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:59:47,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:59:47,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:59:47,868 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:59:47,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:59:47,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:59:47,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:59:47,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:59:47,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:59:47,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:59:47,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:59:47,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:59:47,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:59:47,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:59:47,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:59:47,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:59:47,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:47,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:59:47,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:59:47,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:59:47,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:59:47,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:59:47,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:59:47,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:59:47,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:59:48,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:59:48,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:59:48,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:59:48,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:59:48,341 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:59:48,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2020-12-22 05:59:48,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16faf4c2b/99dc9d6f370f4aedb8ba6b70d94e5266/FLAG89ae56482 [2020-12-22 05:59:49,215 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:49,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2020-12-22 05:59:49,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16faf4c2b/99dc9d6f370f4aedb8ba6b70d94e5266/FLAG89ae56482 [2020-12-22 05:59:49,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16faf4c2b/99dc9d6f370f4aedb8ba6b70d94e5266 [2020-12-22 05:59:49,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:49,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:49,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:49,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:49,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:49,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:49" (1/1) ... [2020-12-22 05:59:49,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18789399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:49, skipping insertion in model container [2020-12-22 05:59:49,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:49" (1/1) ... [2020-12-22 05:59:49,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:49,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:49,988 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/product-lines/elevator_spec1_product22.cil.c[26947,26960] [2020-12-22 05:59:50,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:50,467 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:50,539 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/product-lines/elevator_spec1_product22.cil.c[26947,26960] [2020-12-22 05:59:50,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:50,672 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:50,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50 WrapperNode [2020-12-22 05:59:50,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:50,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:50,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:50,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:50,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:50,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:51,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:51,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:51,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:51,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... [2020-12-22 05:59:51,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:51,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:51,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:51,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:51,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:00:06,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:00:06,796 INFO L299 CfgBuilder]: Removed 1433 assume(true) statements. [2020-12-22 06:00:06,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:00:06 BoogieIcfgContainer [2020-12-22 06:00:06,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:00:06,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:00:06,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:00:06,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:00:06,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:49" (1/3) ... [2020-12-22 06:00:06,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f75490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:00:06, skipping insertion in model container [2020-12-22 06:00:06,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:50" (2/3) ... [2020-12-22 06:00:06,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f75490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:00:06, skipping insertion in model container [2020-12-22 06:00:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:00:06" (3/3) ... [2020-12-22 06:00:06,820 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2020-12-22 06:00:06,829 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:00:06,840 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:00:06,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:00:06,933 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:00:06,933 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:00:06,933 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:00:06,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:00:06,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:00:06,938 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:00:06,938 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:00:06,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:00:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6691 states. [2020-12-22 06:00:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:00:07,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:07,085 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] [2020-12-22 06:00:07,086 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 06:00:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash -204439617, now seen corresponding path program 1 times [2020-12-22 06:00:07,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:07,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441143010] [2020-12-22 06:00:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:07,619 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 06:00:07,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441143010] [2020-12-22 06:00:07,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:07,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:07,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243719044] [2020-12-22 06:00:07,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:07,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:07,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:07,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:07,648 INFO L87 Difference]: Start difference. First operand 6691 states. Second operand 3 states. [2020-12-22 06:00:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:08,395 INFO L93 Difference]: Finished difference Result 19993 states and 37895 transitions. [2020-12-22 06:00:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:08,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 06:00:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:08,550 INFO L225 Difference]: With dead ends: 19993 [2020-12-22 06:00:08,550 INFO L226 Difference]: Without dead ends: 13307 [2020-12-22 06:00:08,577 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 06:00:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13307 states. [2020-12-22 06:00:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13307 to 6687. [2020-12-22 06:00:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6687 states. [2020-12-22 06:00:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 12662 transitions. [2020-12-22 06:00:08,981 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 12662 transitions. Word has length 36 [2020-12-22 06:00:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:08,981 INFO L481 AbstractCegarLoop]: Abstraction has 6687 states and 12662 transitions. [2020-12-22 06:00:08,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 12662 transitions. [2020-12-22 06:00:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:00:08,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:08,986 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] [2020-12-22 06:00:08,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:00:08,987 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 06:00:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:08,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2058587016, now seen corresponding path program 1 times [2020-12-22 06:00:08,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:08,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327736572] [2020-12-22 06:00:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:09,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327736572] [2020-12-22 06:00:09,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:09,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:09,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145440047] [2020-12-22 06:00:09,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:09,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:09,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:09,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:09,153 INFO L87 Difference]: Start difference. First operand 6687 states and 12662 transitions. Second operand 6 states. [2020-12-22 06:00:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:10,642 INFO L93 Difference]: Finished difference Result 26523 states and 50245 transitions. [2020-12-22 06:00:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:10,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-12-22 06:00:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:10,755 INFO L225 Difference]: With dead ends: 26523 [2020-12-22 06:00:10,755 INFO L226 Difference]: Without dead ends: 19879 [2020-12-22 06:00:10,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:00:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19879 states. [2020-12-22 06:00:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19879 to 6683. [2020-12-22 06:00:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6683 states. [2020-12-22 06:00:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6683 states to 6683 states and 12651 transitions. [2020-12-22 06:00:11,177 INFO L78 Accepts]: Start accepts. Automaton has 6683 states and 12651 transitions. Word has length 43 [2020-12-22 06:00:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,177 INFO L481 AbstractCegarLoop]: Abstraction has 6683 states and 12651 transitions. [2020-12-22 06:00:11,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 6683 states and 12651 transitions. [2020-12-22 06:00:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:00:11,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,183 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] [2020-12-22 06:00:11,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:00:11,183 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 06:00:11,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,186 INFO L82 PathProgramCache]: Analyzing trace with hash -420158203, now seen corresponding path program 1 times [2020-12-22 06:00:11,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469297440] [2020-12-22 06:00:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:11,330 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 06:00:11,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469297440] [2020-12-22 06:00:11,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:11,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:11,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610374974] [2020-12-22 06:00:11,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:11,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:11,336 INFO L87 Difference]: Start difference. First operand 6683 states and 12651 transitions. Second operand 4 states. [2020-12-22 06:00:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:12,340 INFO L93 Difference]: Finished difference Result 19937 states and 37762 transitions. [2020-12-22 06:00:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:12,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:00:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:12,383 INFO L225 Difference]: With dead ends: 19937 [2020-12-22 06:00:12,383 INFO L226 Difference]: Without dead ends: 13297 [2020-12-22 06:00:12,397 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 06:00:12,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2020-12-22 06:00:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 6683. [2020-12-22 06:00:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6683 states. [2020-12-22 06:00:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6683 states to 6683 states and 12642 transitions. [2020-12-22 06:00:12,731 INFO L78 Accepts]: Start accepts. Automaton has 6683 states and 12642 transitions. Word has length 45 [2020-12-22 06:00:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,738 INFO L481 AbstractCegarLoop]: Abstraction has 6683 states and 12642 transitions. [2020-12-22 06:00:12,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 6683 states and 12642 transitions. [2020-12-22 06:00:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:00:12,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,741 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] [2020-12-22 06:00:12,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:00:12,741 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 06:00:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1480661970, now seen corresponding path program 1 times [2020-12-22 06:00:12,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647112059] [2020-12-22 06:00:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:13,010 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 06:00:13,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647112059] [2020-12-22 06:00:13,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:13,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:13,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21785229] [2020-12-22 06:00:13,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:13,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:13,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:13,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:13,014 INFO L87 Difference]: Start difference. First operand 6683 states and 12642 transitions. Second operand 4 states. [2020-12-22 06:00:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:13,832 INFO L93 Difference]: Finished difference Result 19937 states and 37744 transitions. [2020-12-22 06:00:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:13,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:00:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:13,864 INFO L225 Difference]: With dead ends: 19937 [2020-12-22 06:00:13,864 INFO L226 Difference]: Without dead ends: 13297 [2020-12-22 06:00:13,878 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 06:00:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2020-12-22 06:00:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 6683. [2020-12-22 06:00:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6683 states. [2020-12-22 06:00:14,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6683 states to 6683 states and 12633 transitions. [2020-12-22 06:00:14,336 INFO L78 Accepts]: Start accepts. Automaton has 6683 states and 12633 transitions. Word has length 47 [2020-12-22 06:00:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:14,337 INFO L481 AbstractCegarLoop]: Abstraction has 6683 states and 12633 transitions. [2020-12-22 06:00:14,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 6683 states and 12633 transitions. [2020-12-22 06:00:14,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:00:14,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:14,342 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] [2020-12-22 06:00:14,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:00:14,343 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 06:00:14,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:14,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1469424379, now seen corresponding path program 1 times [2020-12-22 06:00:14,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:14,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560231359] [2020-12-22 06:00:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:14,459 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 06:00:14,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560231359] [2020-12-22 06:00:14,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:14,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:14,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062527072] [2020-12-22 06:00:14,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:14,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:14,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:14,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:14,462 INFO L87 Difference]: Start difference. First operand 6683 states and 12633 transitions. Second operand 4 states. [2020-12-22 06:00:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:16,253 INFO L93 Difference]: Finished difference Result 33105 states and 62672 transitions. [2020-12-22 06:00:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:16,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:00:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:16,435 INFO L225 Difference]: With dead ends: 33105 [2020-12-22 06:00:16,435 INFO L226 Difference]: Without dead ends: 26465 [2020-12-22 06:00:16,451 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 06:00:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26465 states. [2020-12-22 06:00:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26465 to 6683. [2020-12-22 06:00:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6683 states. [2020-12-22 06:00:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6683 states to 6683 states and 12629 transitions. [2020-12-22 06:00:16,836 INFO L78 Accepts]: Start accepts. Automaton has 6683 states and 12629 transitions. Word has length 49 [2020-12-22 06:00:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:16,838 INFO L481 AbstractCegarLoop]: Abstraction has 6683 states and 12629 transitions. [2020-12-22 06:00:16,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6683 states and 12629 transitions. [2020-12-22 06:00:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:00:16,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:16,841 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] [2020-12-22 06:00:16,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:00:16,843 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 06:00:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:16,843 INFO L82 PathProgramCache]: Analyzing trace with hash -37914235, now seen corresponding path program 1 times [2020-12-22 06:00:16,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:16,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741727932] [2020-12-22 06:00:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:16,948 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 06:00:16,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741727932] [2020-12-22 06:00:16,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:16,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:16,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516548456] [2020-12-22 06:00:16,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:16,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:16,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:16,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:16,952 INFO L87 Difference]: Start difference. First operand 6683 states and 12629 transitions. Second operand 4 states. [2020-12-22 06:00:18,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:18,131 INFO L93 Difference]: Finished difference Result 26500 states and 50159 transitions. [2020-12-22 06:00:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:18,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:00:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:18,185 INFO L225 Difference]: With dead ends: 26500 [2020-12-22 06:00:18,186 INFO L226 Difference]: Without dead ends: 19839 [2020-12-22 06:00:18,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19839 states. [2020-12-22 06:00:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19839 to 6665. [2020-12-22 06:00:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6665 states. [2020-12-22 06:00:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 12598 transitions. [2020-12-22 06:00:18,715 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 12598 transitions. Word has length 49 [2020-12-22 06:00:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:18,716 INFO L481 AbstractCegarLoop]: Abstraction has 6665 states and 12598 transitions. [2020-12-22 06:00:18,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 12598 transitions. [2020-12-22 06:00:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:00:18,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:18,717 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] [2020-12-22 06:00:18,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:00:18,718 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 06:00:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash 814270506, now seen corresponding path program 1 times [2020-12-22 06:00:18,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:18,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921906176] [2020-12-22 06:00:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:18,797 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 06:00:18,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921906176] [2020-12-22 06:00:18,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:18,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:18,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421798899] [2020-12-22 06:00:18,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:18,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:18,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:18,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:18,800 INFO L87 Difference]: Start difference. First operand 6665 states and 12598 transitions. Second operand 4 states. [2020-12-22 06:00:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:19,693 INFO L93 Difference]: Finished difference Result 19901 states and 37657 transitions. [2020-12-22 06:00:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:19,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:00:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:19,725 INFO L225 Difference]: With dead ends: 19901 [2020-12-22 06:00:19,726 INFO L226 Difference]: Without dead ends: 13258 [2020-12-22 06:00:19,737 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 06:00:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13258 states. [2020-12-22 06:00:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13258 to 6665. [2020-12-22 06:00:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6665 states. [2020-12-22 06:00:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 12592 transitions. [2020-12-22 06:00:20,068 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 12592 transitions. Word has length 50 [2020-12-22 06:00:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:20,068 INFO L481 AbstractCegarLoop]: Abstraction has 6665 states and 12592 transitions. [2020-12-22 06:00:20,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 12592 transitions. [2020-12-22 06:00:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:00:20,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:20,069 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] [2020-12-22 06:00:20,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:00:20,070 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 06:00:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 348367594, now seen corresponding path program 1 times [2020-12-22 06:00:20,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:20,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196974510] [2020-12-22 06:00:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:20,209 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 06:00:20,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196974510] [2020-12-22 06:00:20,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:20,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:20,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685965730] [2020-12-22 06:00:20,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:20,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:20,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:20,212 INFO L87 Difference]: Start difference. First operand 6665 states and 12592 transitions. Second operand 4 states. [2020-12-22 06:00:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:20,946 INFO L93 Difference]: Finished difference Result 19901 states and 37645 transitions. [2020-12-22 06:00:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:20,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:00:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:20,980 INFO L225 Difference]: With dead ends: 19901 [2020-12-22 06:00:20,980 INFO L226 Difference]: Without dead ends: 13258 [2020-12-22 06:00:20,992 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 06:00:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13258 states. [2020-12-22 06:00:21,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13258 to 6665. [2020-12-22 06:00:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6665 states. [2020-12-22 06:00:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 12586 transitions. [2020-12-22 06:00:21,418 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 12586 transitions. Word has length 51 [2020-12-22 06:00:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:21,420 INFO L481 AbstractCegarLoop]: Abstraction has 6665 states and 12586 transitions. [2020-12-22 06:00:21,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 12586 transitions. [2020-12-22 06:00:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:00:21,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:21,421 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 06:00:21,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:00:21,422 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 06:00:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:21,423 INFO L82 PathProgramCache]: Analyzing trace with hash 544278895, now seen corresponding path program 1 times [2020-12-22 06:00:21,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:21,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674284597] [2020-12-22 06:00:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:21,561 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 06:00:21,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674284597] [2020-12-22 06:00:21,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:21,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:21,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193504469] [2020-12-22 06:00:21,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:21,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:21,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:21,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:21,564 INFO L87 Difference]: Start difference. First operand 6665 states and 12586 transitions. Second operand 7 states. [2020-12-22 06:00:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:23,121 INFO L93 Difference]: Finished difference Result 33076 states and 62586 transitions. [2020-12-22 06:00:23,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:23,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 06:00:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:23,179 INFO L225 Difference]: With dead ends: 33076 [2020-12-22 06:00:23,180 INFO L226 Difference]: Without dead ends: 26439 [2020-12-22 06:00:23,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26439 states. [2020-12-22 06:00:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26439 to 6667. [2020-12-22 06:00:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6667 states. [2020-12-22 06:00:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6667 states to 6667 states and 12587 transitions. [2020-12-22 06:00:23,835 INFO L78 Accepts]: Start accepts. Automaton has 6667 states and 12587 transitions. Word has length 52 [2020-12-22 06:00:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:23,839 INFO L481 AbstractCegarLoop]: Abstraction has 6667 states and 12587 transitions. [2020-12-22 06:00:23,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:23,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6667 states and 12587 transitions. [2020-12-22 06:00:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:00:23,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:23,841 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] [2020-12-22 06:00:23,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:00:23,841 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 06:00:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash 922022740, now seen corresponding path program 1 times [2020-12-22 06:00:23,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:23,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903457297] [2020-12-22 06:00:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:23,923 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 06:00:23,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903457297] [2020-12-22 06:00:23,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:23,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:23,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676832349] [2020-12-22 06:00:23,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:23,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:23,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:23,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:23,925 INFO L87 Difference]: Start difference. First operand 6667 states and 12587 transitions. Second operand 7 states. [2020-12-22 06:00:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:25,563 INFO L93 Difference]: Finished difference Result 33068 states and 62565 transitions. [2020-12-22 06:00:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:25,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 06:00:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:25,778 INFO L225 Difference]: With dead ends: 33068 [2020-12-22 06:00:25,778 INFO L226 Difference]: Without dead ends: 26434 [2020-12-22 06:00:25,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26434 states. [2020-12-22 06:00:26,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26434 to 6672. [2020-12-22 06:00:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6672 states. [2020-12-22 06:00:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 12595 transitions. [2020-12-22 06:00:26,237 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 12595 transitions. Word has length 54 [2020-12-22 06:00:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:26,237 INFO L481 AbstractCegarLoop]: Abstraction has 6672 states and 12595 transitions. [2020-12-22 06:00:26,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 12595 transitions. [2020-12-22 06:00:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:00:26,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:26,238 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] [2020-12-22 06:00:26,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:00:26,239 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 06:00:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:26,239 INFO L82 PathProgramCache]: Analyzing trace with hash 848132079, now seen corresponding path program 1 times [2020-12-22 06:00:26,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:26,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760503045] [2020-12-22 06:00:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:26,291 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 06:00:26,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760503045] [2020-12-22 06:00:26,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:26,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:26,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600841920] [2020-12-22 06:00:26,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:26,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:26,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:26,293 INFO L87 Difference]: Start difference. First operand 6672 states and 12595 transitions. Second operand 3 states. [2020-12-22 06:00:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:26,706 INFO L93 Difference]: Finished difference Result 13286 states and 25108 transitions. [2020-12-22 06:00:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:26,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:00:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:26,714 INFO L225 Difference]: With dead ends: 13286 [2020-12-22 06:00:26,714 INFO L226 Difference]: Without dead ends: 6651 [2020-12-22 06:00:26,721 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 06:00:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2020-12-22 06:00:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6651. [2020-12-22 06:00:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6651 states. [2020-12-22 06:00:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 12559 transitions. [2020-12-22 06:00:27,068 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 12559 transitions. Word has length 56 [2020-12-22 06:00:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:27,069 INFO L481 AbstractCegarLoop]: Abstraction has 6651 states and 12559 transitions. [2020-12-22 06:00:27,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 12559 transitions. [2020-12-22 06:00:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:00:27,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:27,070 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] [2020-12-22 06:00:27,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:00:27,070 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 06:00:27,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1660045014, now seen corresponding path program 1 times [2020-12-22 06:00:27,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:27,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787194346] [2020-12-22 06:00:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:27,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787194346] [2020-12-22 06:00:27,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:27,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:27,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71412414] [2020-12-22 06:00:27,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:27,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:27,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:27,144 INFO L87 Difference]: Start difference. First operand 6651 states and 12559 transitions. Second operand 5 states. [2020-12-22 06:00:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:27,683 INFO L93 Difference]: Finished difference Result 13235 states and 25030 transitions. [2020-12-22 06:00:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:27,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 06:00:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:27,692 INFO L225 Difference]: With dead ends: 13235 [2020-12-22 06:00:27,692 INFO L226 Difference]: Without dead ends: 6645 [2020-12-22 06:00:27,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2020-12-22 06:00:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 6645. [2020-12-22 06:00:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6645 states. [2020-12-22 06:00:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 12550 transitions. [2020-12-22 06:00:27,958 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 12550 transitions. Word has length 58 [2020-12-22 06:00:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:27,958 INFO L481 AbstractCegarLoop]: Abstraction has 6645 states and 12550 transitions. [2020-12-22 06:00:27,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 12550 transitions. [2020-12-22 06:00:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:00:27,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:27,959 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] [2020-12-22 06:00:27,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:00:27,959 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 06:00:27,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1928367274, now seen corresponding path program 1 times [2020-12-22 06:00:27,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:27,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162796922] [2020-12-22 06:00:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:28,028 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 06:00:28,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162796922] [2020-12-22 06:00:28,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:28,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:28,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392888481] [2020-12-22 06:00:28,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:28,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:28,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:28,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:28,031 INFO L87 Difference]: Start difference. First operand 6645 states and 12550 transitions. Second operand 4 states. [2020-12-22 06:00:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:28,360 INFO L93 Difference]: Finished difference Result 13229 states and 25021 transitions. [2020-12-22 06:00:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:28,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:00:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:28,369 INFO L225 Difference]: With dead ends: 13229 [2020-12-22 06:00:28,369 INFO L226 Difference]: Without dead ends: 6631 [2020-12-22 06:00:28,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2020-12-22 06:00:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6631. [2020-12-22 06:00:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6631 states. [2020-12-22 06:00:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 12529 transitions. [2020-12-22 06:00:28,839 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 12529 transitions. Word has length 58 [2020-12-22 06:00:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:28,839 INFO L481 AbstractCegarLoop]: Abstraction has 6631 states and 12529 transitions. [2020-12-22 06:00:28,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 12529 transitions. [2020-12-22 06:00:28,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:00:28,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:28,841 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] [2020-12-22 06:00:28,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:00:28,841 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 06:00:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:28,842 INFO L82 PathProgramCache]: Analyzing trace with hash 427975005, now seen corresponding path program 1 times [2020-12-22 06:00:28,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:28,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763117735] [2020-12-22 06:00:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:28,981 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 06:00:28,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763117735] [2020-12-22 06:00:28,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:28,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:28,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739882973] [2020-12-22 06:00:28,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:28,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:28,985 INFO L87 Difference]: Start difference. First operand 6631 states and 12529 transitions. Second operand 6 states. [2020-12-22 06:00:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:29,531 INFO L93 Difference]: Finished difference Result 13229 states and 25016 transitions. [2020-12-22 06:00:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:29,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 06:00:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:29,541 INFO L225 Difference]: With dead ends: 13229 [2020-12-22 06:00:29,541 INFO L226 Difference]: Without dead ends: 6651 [2020-12-22 06:00:29,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2020-12-22 06:00:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6631. [2020-12-22 06:00:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6631 states. [2020-12-22 06:00:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 12528 transitions. [2020-12-22 06:00:29,944 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 12528 transitions. Word has length 59 [2020-12-22 06:00:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:29,945 INFO L481 AbstractCegarLoop]: Abstraction has 6631 states and 12528 transitions. [2020-12-22 06:00:29,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 12528 transitions. [2020-12-22 06:00:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:00:29,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:29,946 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 06:00:29,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:00:29,947 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 06:00:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:29,947 INFO L82 PathProgramCache]: Analyzing trace with hash 113578385, now seen corresponding path program 1 times [2020-12-22 06:00:29,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:29,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421714697] [2020-12-22 06:00:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:30,036 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 06:00:30,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421714697] [2020-12-22 06:00:30,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:30,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:30,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833875759] [2020-12-22 06:00:30,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:30,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:30,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:30,039 INFO L87 Difference]: Start difference. First operand 6631 states and 12528 transitions. Second operand 6 states. [2020-12-22 06:00:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:30,574 INFO L93 Difference]: Finished difference Result 13219 states and 24997 transitions. [2020-12-22 06:00:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:30,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:00:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:30,583 INFO L225 Difference]: With dead ends: 13219 [2020-12-22 06:00:30,584 INFO L226 Difference]: Without dead ends: 6646 [2020-12-22 06:00:30,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2020-12-22 06:00:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 6631. [2020-12-22 06:00:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6631 states. [2020-12-22 06:00:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 12527 transitions. [2020-12-22 06:00:30,838 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 12527 transitions. Word has length 60 [2020-12-22 06:00:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:30,838 INFO L481 AbstractCegarLoop]: Abstraction has 6631 states and 12527 transitions. [2020-12-22 06:00:30,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 12527 transitions. [2020-12-22 06:00:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:00:30,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:30,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:30,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:00:30,840 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 06:00:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:30,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1604010734, now seen corresponding path program 1 times [2020-12-22 06:00:30,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:30,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260151239] [2020-12-22 06:00:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:30,922 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 06:00:30,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260151239] [2020-12-22 06:00:30,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:30,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:30,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811599803] [2020-12-22 06:00:30,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:30,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:30,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:30,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:30,924 INFO L87 Difference]: Start difference. First operand 6631 states and 12527 transitions. Second operand 3 states. [2020-12-22 06:00:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:31,955 INFO L93 Difference]: Finished difference Result 14863 states and 28113 transitions. [2020-12-22 06:00:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:31,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:00:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:31,973 INFO L225 Difference]: With dead ends: 14863 [2020-12-22 06:00:31,973 INFO L226 Difference]: Without dead ends: 11522 [2020-12-22 06:00:31,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:00:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11522 states. [2020-12-22 06:00:32,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11522 to 9543. [2020-12-22 06:00:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9543 states. [2020-12-22 06:00:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9543 states to 9543 states and 18043 transitions. [2020-12-22 06:00:32,420 INFO L78 Accepts]: Start accepts. Automaton has 9543 states and 18043 transitions. Word has length 61 [2020-12-22 06:00:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:32,421 INFO L481 AbstractCegarLoop]: Abstraction has 9543 states and 18043 transitions. [2020-12-22 06:00:32,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9543 states and 18043 transitions. [2020-12-22 06:00:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:00:32,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:32,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:32,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:00:32,426 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 06:00:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash -678243071, now seen corresponding path program 1 times [2020-12-22 06:00:32,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:32,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145902854] [2020-12-22 06:00:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:32,550 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 06:00:32,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145902854] [2020-12-22 06:00:32,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:32,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:32,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089969123] [2020-12-22 06:00:32,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:00:32,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:32,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:00:32,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:32,552 INFO L87 Difference]: Start difference. First operand 9543 states and 18043 transitions. Second operand 8 states. [2020-12-22 06:00:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:34,507 INFO L93 Difference]: Finished difference Result 20973 states and 39449 transitions. [2020-12-22 06:00:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:00:34,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 06:00:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:34,525 INFO L225 Difference]: With dead ends: 20973 [2020-12-22 06:00:34,525 INFO L226 Difference]: Without dead ends: 12607 [2020-12-22 06:00:34,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:00:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12607 states. [2020-12-22 06:00:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12607 to 7863. [2020-12-22 06:00:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7863 states. [2020-12-22 06:00:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7863 states to 7863 states and 14803 transitions. [2020-12-22 06:00:35,105 INFO L78 Accepts]: Start accepts. Automaton has 7863 states and 14803 transitions. Word has length 79 [2020-12-22 06:00:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:35,105 INFO L481 AbstractCegarLoop]: Abstraction has 7863 states and 14803 transitions. [2020-12-22 06:00:35,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:00:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7863 states and 14803 transitions. [2020-12-22 06:00:35,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:00:35,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:35,109 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 06:00:35,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:00:35,109 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 06:00:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:35,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1129806194, now seen corresponding path program 1 times [2020-12-22 06:00:35,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:35,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111004232] [2020-12-22 06:00:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:35,197 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 06:00:35,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111004232] [2020-12-22 06:00:35,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:35,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:35,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687981087] [2020-12-22 06:00:35,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:35,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:35,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:35,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:35,199 INFO L87 Difference]: Start difference. First operand 7863 states and 14803 transitions. Second operand 3 states. [2020-12-22 06:00:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:36,095 INFO L93 Difference]: Finished difference Result 18426 states and 34736 transitions. [2020-12-22 06:00:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:36,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:00:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:36,109 INFO L225 Difference]: With dead ends: 18426 [2020-12-22 06:00:36,109 INFO L226 Difference]: Without dead ends: 11792 [2020-12-22 06:00:36,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:00:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11792 states. [2020-12-22 06:00:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11792 to 11777. [2020-12-22 06:00:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11777 states. [2020-12-22 06:00:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11777 states to 11777 states and 22135 transitions. [2020-12-22 06:00:36,651 INFO L78 Accepts]: Start accepts. Automaton has 11777 states and 22135 transitions. Word has length 80 [2020-12-22 06:00:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:36,651 INFO L481 AbstractCegarLoop]: Abstraction has 11777 states and 22135 transitions. [2020-12-22 06:00:36,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11777 states and 22135 transitions. [2020-12-22 06:00:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:00:36,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:36,655 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 06:00:36,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:00:36,656 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 06:00:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:36,656 INFO L82 PathProgramCache]: Analyzing trace with hash 341655751, now seen corresponding path program 1 times [2020-12-22 06:00:36,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:36,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332067733] [2020-12-22 06:00:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:36,724 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 06:00:36,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332067733] [2020-12-22 06:00:36,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:36,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:36,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054370248] [2020-12-22 06:00:36,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:36,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:36,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:36,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:36,727 INFO L87 Difference]: Start difference. First operand 11777 states and 22135 transitions. Second operand 3 states. [2020-12-22 06:00:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:38,238 INFO L93 Difference]: Finished difference Result 29490 states and 55486 transitions. [2020-12-22 06:00:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:38,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:00:38,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:38,263 INFO L225 Difference]: With dead ends: 29490 [2020-12-22 06:00:38,264 INFO L226 Difference]: Without dead ends: 19532 [2020-12-22 06:00:38,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:00:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19532 states. [2020-12-22 06:00:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19532 to 19517. [2020-12-22 06:00:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19517 states. [2020-12-22 06:00:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19517 states to 19517 states and 36650 transitions. [2020-12-22 06:00:39,084 INFO L78 Accepts]: Start accepts. Automaton has 19517 states and 36650 transitions. Word has length 81 [2020-12-22 06:00:39,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:39,084 INFO L481 AbstractCegarLoop]: Abstraction has 19517 states and 36650 transitions. [2020-12-22 06:00:39,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19517 states and 36650 transitions. [2020-12-22 06:00:39,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:00:39,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:39,088 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 06:00:39,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:00:39,089 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 06:00:39,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:39,089 INFO L82 PathProgramCache]: Analyzing trace with hash -687316393, now seen corresponding path program 1 times [2020-12-22 06:00:39,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:39,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707536856] [2020-12-22 06:00:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:39,168 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 06:00:39,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707536856] [2020-12-22 06:00:39,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:39,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:39,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91399573] [2020-12-22 06:00:39,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:39,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:39,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:39,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:39,170 INFO L87 Difference]: Start difference. First operand 19517 states and 36650 transitions. Second operand 3 states. [2020-12-22 06:00:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:41,090 INFO L93 Difference]: Finished difference Result 51442 states and 96663 transitions. [2020-12-22 06:00:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:41,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:00:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:41,133 INFO L225 Difference]: With dead ends: 51442 [2020-12-22 06:00:41,133 INFO L226 Difference]: Without dead ends: 34816 [2020-12-22 06:00:41,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:00:41,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34816 states. [2020-12-22 06:00:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34816 to 34801. [2020-12-22 06:00:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34801 states. [2020-12-22 06:00:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34801 states to 34801 states and 65300 transitions. [2020-12-22 06:00:42,506 INFO L78 Accepts]: Start accepts. Automaton has 34801 states and 65300 transitions. Word has length 82 [2020-12-22 06:00:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:42,506 INFO L481 AbstractCegarLoop]: Abstraction has 34801 states and 65300 transitions. [2020-12-22 06:00:42,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 34801 states and 65300 transitions. [2020-12-22 06:00:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:00:42,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:42,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:42,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:00:42,510 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 06:00:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash -591826676, now seen corresponding path program 1 times [2020-12-22 06:00:42,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:42,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314672365] [2020-12-22 06:00:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:42,575 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 06:00:42,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314672365] [2020-12-22 06:00:42,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:42,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:42,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904833275] [2020-12-22 06:00:42,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:42,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:42,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:42,577 INFO L87 Difference]: Start difference. First operand 34801 states and 65300 transitions. Second operand 3 states. [2020-12-22 06:00:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:45,784 INFO L93 Difference]: Finished difference Result 94954 states and 178208 transitions. [2020-12-22 06:00:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:45,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:00:45,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:45,879 INFO L225 Difference]: With dead ends: 94954 [2020-12-22 06:00:45,879 INFO L226 Difference]: Without dead ends: 64972 [2020-12-22 06:00:45,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:00:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64972 states. [2020-12-22 06:00:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64972 to 64957. [2020-12-22 06:00:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64957 states. [2020-12-22 06:00:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64957 states to 64957 states and 121758 transitions. [2020-12-22 06:00:48,971 INFO L78 Accepts]: Start accepts. Automaton has 64957 states and 121758 transitions. Word has length 83 [2020-12-22 06:00:48,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:48,972 INFO L481 AbstractCegarLoop]: Abstraction has 64957 states and 121758 transitions. [2020-12-22 06:00:48,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 64957 states and 121758 transitions. [2020-12-22 06:00:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:00:48,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:48,975 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, 1, 1] [2020-12-22 06:00:48,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:00:48,975 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 06:00:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:48,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1803195970, now seen corresponding path program 1 times [2020-12-22 06:00:48,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:48,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290496760] [2020-12-22 06:00:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:49,055 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 06:00:49,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290496760] [2020-12-22 06:00:49,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:49,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:49,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808771042] [2020-12-22 06:00:49,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:49,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:49,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:49,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:49,057 INFO L87 Difference]: Start difference. First operand 64957 states and 121758 transitions. Second operand 5 states. [2020-12-22 06:00:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:58,778 INFO L93 Difference]: Finished difference Result 289901 states and 543502 transitions. [2020-12-22 06:00:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:00:58,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 06:00:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:59,221 INFO L225 Difference]: With dead ends: 289901 [2020-12-22 06:00:59,221 INFO L226 Difference]: Without dead ends: 233379 [2020-12-22 06:00:59,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 06:00:59,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233379 states. [2020-12-22 06:01:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233379 to 114060. [2020-12-22 06:01:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114060 states. [2020-12-22 06:01:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114060 states to 114060 states and 213455 transitions. [2020-12-22 06:01:06,247 INFO L78 Accepts]: Start accepts. Automaton has 114060 states and 213455 transitions. Word has length 84 [2020-12-22 06:01:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:06,248 INFO L481 AbstractCegarLoop]: Abstraction has 114060 states and 213455 transitions. [2020-12-22 06:01:06,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 114060 states and 213455 transitions. [2020-12-22 06:01:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:01:06,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:06,251 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, 1, 1, 1, 1] [2020-12-22 06:01:06,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:01:06,252 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 06:01:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1514585108, now seen corresponding path program 1 times [2020-12-22 06:01:06,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:06,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578178111] [2020-12-22 06:01:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:06,323 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 06:01:06,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578178111] [2020-12-22 06:01:06,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:06,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:06,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494413207] [2020-12-22 06:01:06,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:06,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:06,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:06,325 INFO L87 Difference]: Start difference. First operand 114060 states and 213455 transitions. Second operand 5 states. [2020-12-22 06:01:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:14,992 INFO L93 Difference]: Finished difference Result 281762 states and 526536 transitions. [2020-12-22 06:01:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:14,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 06:01:14,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:15,484 INFO L225 Difference]: With dead ends: 281762 [2020-12-22 06:01:15,484 INFO L226 Difference]: Without dead ends: 176542 [2020-12-22 06:01:15,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:01:15,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176542 states. [2020-12-22 06:01:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176542 to 114405. [2020-12-22 06:01:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114405 states. [2020-12-22 06:01:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114405 states to 114405 states and 213800 transitions. [2020-12-22 06:01:21,938 INFO L78 Accepts]: Start accepts. Automaton has 114405 states and 213800 transitions. Word has length 86 [2020-12-22 06:01:21,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:21,938 INFO L481 AbstractCegarLoop]: Abstraction has 114405 states and 213800 transitions. [2020-12-22 06:01:21,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 114405 states and 213800 transitions. [2020-12-22 06:01:21,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:01:21,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:21,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:21,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:01:21,942 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 06:01:21,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:21,942 INFO L82 PathProgramCache]: Analyzing trace with hash 787738649, now seen corresponding path program 1 times [2020-12-22 06:01:21,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:21,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580418924] [2020-12-22 06:01:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:22,014 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 06:01:22,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580418924] [2020-12-22 06:01:22,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:22,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:22,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310217727] [2020-12-22 06:01:22,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:22,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:22,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:22,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:22,016 INFO L87 Difference]: Start difference. First operand 114405 states and 213800 transitions. Second operand 3 states. [2020-12-22 06:01:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:30,490 INFO L93 Difference]: Finished difference Result 247444 states and 461656 transitions. [2020-12-22 06:01:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:30,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:01:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:30,758 INFO L225 Difference]: With dead ends: 247444 [2020-12-22 06:01:30,758 INFO L226 Difference]: Without dead ends: 141297 [2020-12-22 06:01:31,013 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 06:01:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141297 states. [2020-12-22 06:01:38,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141297 to 140874. [2020-12-22 06:01:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140874 states. [2020-12-22 06:01:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140874 states to 140874 states and 260559 transitions. [2020-12-22 06:01:38,605 INFO L78 Accepts]: Start accepts. Automaton has 140874 states and 260559 transitions. Word has length 91 [2020-12-22 06:01:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:38,605 INFO L481 AbstractCegarLoop]: Abstraction has 140874 states and 260559 transitions. [2020-12-22 06:01:38,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 140874 states and 260559 transitions. [2020-12-22 06:01:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:01:38,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:38,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:38,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:01:38,609 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 06:01:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1608512014, now seen corresponding path program 1 times [2020-12-22 06:01:38,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:38,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41940491] [2020-12-22 06:01:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:38,685 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 06:01:38,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41940491] [2020-12-22 06:01:38,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:38,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:38,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335503940] [2020-12-22 06:01:38,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:38,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:38,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:38,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:38,687 INFO L87 Difference]: Start difference. First operand 140874 states and 260559 transitions. Second operand 5 states. [2020-12-22 06:01:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:53,771 INFO L93 Difference]: Finished difference Result 383043 states and 707312 transitions. [2020-12-22 06:01:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:53,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 06:01:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:54,473 INFO L225 Difference]: With dead ends: 383043 [2020-12-22 06:01:54,473 INFO L226 Difference]: Without dead ends: 250451 [2020-12-22 06:01:54,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250451 states. [2020-12-22 06:02:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250451 to 140874. [2020-12-22 06:02:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140874 states. [2020-12-22 06:02:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140874 states to 140874 states and 256768 transitions. [2020-12-22 06:02:03,418 INFO L78 Accepts]: Start accepts. Automaton has 140874 states and 256768 transitions. Word has length 93 [2020-12-22 06:02:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:03,419 INFO L481 AbstractCegarLoop]: Abstraction has 140874 states and 256768 transitions. [2020-12-22 06:02:03,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 140874 states and 256768 transitions. [2020-12-22 06:02:03,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:02:03,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:03,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:03,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:02:03,424 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 06:02:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:03,425 INFO L82 PathProgramCache]: Analyzing trace with hash -574613223, now seen corresponding path program 1 times [2020-12-22 06:02:03,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:03,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874849543] [2020-12-22 06:02:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:03,507 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 06:02:03,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874849543] [2020-12-22 06:02:03,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:03,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:03,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081622945] [2020-12-22 06:02:03,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:03,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:03,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:03,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:03,509 INFO L87 Difference]: Start difference. First operand 140874 states and 256768 transitions. Second operand 5 states. [2020-12-22 06:02:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:11,456 INFO L93 Difference]: Finished difference Result 253021 states and 461200 transitions. [2020-12-22 06:02:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:11,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 06:02:11,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:12,043 INFO L225 Difference]: With dead ends: 253021 [2020-12-22 06:02:12,044 INFO L226 Difference]: Without dead ends: 141025 [2020-12-22 06:02:12,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141025 states.