/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:04:23,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:04:24,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:04:24,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:04:24,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:04:24,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:04:24,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:04:24,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:04:24,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:04:24,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:04:24,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:04:24,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:04:24,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:04:24,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:04:24,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:04:24,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:04:24,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:04:24,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:04:24,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:04:24,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:04:24,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:04:24,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:04:24,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:04:24,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:04:24,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:04:24,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:04:24,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:04:24,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:04:24,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:04:24,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:04:24,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:04:24,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:04:24,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:04:24,187 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:04:24,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:04:24,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:04:24,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:04:24,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:04:24,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:04:24,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:04:24,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:04:24,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:04:24,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:04:24,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:04:24,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:04:24,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:04:24,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:04:24,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:04:24,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:04:24,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:04:24,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:04:24,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:04:24,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:04:24,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:04:24,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:04:24,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:04:24,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:04:24,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:04:24,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:04:24,683 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:04:24,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c [2020-12-22 10:04:24,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d59ca2d/9958ab9620064686929e1dcfbfada881/FLAG3c266da1e [2020-12-22 10:04:25,778 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:04:25,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c [2020-12-22 10:04:25,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d59ca2d/9958ab9620064686929e1dcfbfada881/FLAG3c266da1e [2020-12-22 10:04:26,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d59ca2d/9958ab9620064686929e1dcfbfada881 [2020-12-22 10:04:26,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:04:26,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:04:26,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:04:26,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:04:26,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:04:26,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:04:26" (1/1) ... [2020-12-22 10:04:26,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab02d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:26, skipping insertion in model container [2020-12-22 10:04:26,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:04:26" (1/1) ... [2020-12-22 10:04:26,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:04:26,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:04:26,824 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c[15586,15599] [2020-12-22 10:04:26,876 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c[16185,16198] [2020-12-22 10:04:28,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:04:28,126 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:04:28,267 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c[15586,15599] [2020-12-22 10:04:28,273 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c[16185,16198] [2020-12-22 10:04:28,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:04:28,940 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:04:28,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28 WrapperNode [2020-12-22 10:04:28,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:04:28,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:04:28,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:04:28,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:04:28,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:29,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:29,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:04:29,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:04:29,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:04:29,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:04:29,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:29,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:29,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:29,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:29,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:30,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:30,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... [2020-12-22 10:04:30,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:04:30,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:04:30,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:04:30,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:04:30,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:04:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:04:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:04:30,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:04:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:04:35,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:04:35,713 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:04:35,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:04:35 BoogieIcfgContainer [2020-12-22 10:04:35,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:04:35,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:04:35,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:04:35,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:04:35,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:04:26" (1/3) ... [2020-12-22 10:04:35,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecea08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:04:35, skipping insertion in model container [2020-12-22 10:04:35,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:04:28" (2/3) ... [2020-12-22 10:04:35,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecea08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:04:35, skipping insertion in model container [2020-12-22 10:04:35,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:04:35" (3/3) ... [2020-12-22 10:04:35,733 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label07.c [2020-12-22 10:04:35,745 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:04:35,752 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:04:35,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:04:35,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:04:35,817 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:04:35,817 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:04:35,817 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:04:35,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:04:35,818 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:04:35,818 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:04:35,818 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:04:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states. [2020-12-22 10:04:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 10:04:35,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:35,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:35,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:35,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2006012380, now seen corresponding path program 1 times [2020-12-22 10:04:35,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:35,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115596960] [2020-12-22 10:04:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:36,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115596960] [2020-12-22 10:04:36,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:36,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:04:36,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803956797] [2020-12-22 10:04:36,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:36,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:36,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:36,187 INFO L87 Difference]: Start difference. First operand 926 states. Second operand 3 states. [2020-12-22 10:04:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:42,869 INFO L93 Difference]: Finished difference Result 2561 states and 4920 transitions. [2020-12-22 10:04:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:42,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 10:04:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:42,913 INFO L225 Difference]: With dead ends: 2561 [2020-12-22 10:04:42,913 INFO L226 Difference]: Without dead ends: 1611 [2020-12-22 10:04:42,927 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 10:04:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-12-22 10:04:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2020-12-22 10:04:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1611 states. [2020-12-22 10:04:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2995 transitions. [2020-12-22 10:04:43,087 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2995 transitions. Word has length 7 [2020-12-22 10:04:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:43,087 INFO L481 AbstractCegarLoop]: Abstraction has 1611 states and 2995 transitions. [2020-12-22 10:04:43,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2995 transitions. [2020-12-22 10:04:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:04:43,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:43,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:43,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:04:43,094 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:43,095 INFO L82 PathProgramCache]: Analyzing trace with hash 615382892, now seen corresponding path program 1 times [2020-12-22 10:04:43,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:43,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348450237] [2020-12-22 10:04:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:43,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348450237] [2020-12-22 10:04:43,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:43,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:04:43,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627575946] [2020-12-22 10:04:43,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:04:43,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:43,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:04:43,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:04:43,284 INFO L87 Difference]: Start difference. First operand 1611 states and 2995 transitions. Second operand 5 states. [2020-12-22 10:04:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:43,411 INFO L93 Difference]: Finished difference Result 1675 states and 3094 transitions. [2020-12-22 10:04:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:04:43,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:04:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:43,423 INFO L225 Difference]: With dead ends: 1675 [2020-12-22 10:04:43,423 INFO L226 Difference]: Without dead ends: 1611 [2020-12-22 10:04:43,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:04:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-12-22 10:04:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2020-12-22 10:04:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1611 states. [2020-12-22 10:04:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2955 transitions. [2020-12-22 10:04:43,469 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2955 transitions. Word has length 38 [2020-12-22 10:04:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:43,469 INFO L481 AbstractCegarLoop]: Abstraction has 1611 states and 2955 transitions. [2020-12-22 10:04:43,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:04:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2955 transitions. [2020-12-22 10:04:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:04:43,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:43,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:43,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:04:43,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:43,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:43,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2101054792, now seen corresponding path program 1 times [2020-12-22 10:04:43,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:43,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076653004] [2020-12-22 10:04:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:43,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076653004] [2020-12-22 10:04:43,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:43,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:43,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870373807] [2020-12-22 10:04:43,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:43,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:43,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:43,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:43,676 INFO L87 Difference]: Start difference. First operand 1611 states and 2955 transitions. Second operand 3 states. [2020-12-22 10:04:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:43,728 INFO L93 Difference]: Finished difference Result 1725 states and 3135 transitions. [2020-12-22 10:04:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:43,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:04:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:43,740 INFO L225 Difference]: With dead ends: 1725 [2020-12-22 10:04:43,740 INFO L226 Difference]: Without dead ends: 1665 [2020-12-22 10:04:43,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-12-22 10:04:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1663. [2020-12-22 10:04:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1663 states. [2020-12-22 10:04:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 3038 transitions. [2020-12-22 10:04:43,787 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 3038 transitions. Word has length 77 [2020-12-22 10:04:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:43,788 INFO L481 AbstractCegarLoop]: Abstraction has 1663 states and 3038 transitions. [2020-12-22 10:04:43,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 3038 transitions. [2020-12-22 10:04:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:04:43,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:43,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:43,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:04:43,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1452480302, now seen corresponding path program 1 times [2020-12-22 10:04:43,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:43,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016580772] [2020-12-22 10:04:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:43,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016580772] [2020-12-22 10:04:43,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:43,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:43,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283184164] [2020-12-22 10:04:43,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:43,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:43,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:43,921 INFO L87 Difference]: Start difference. First operand 1663 states and 3038 transitions. Second operand 3 states. [2020-12-22 10:04:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:43,971 INFO L93 Difference]: Finished difference Result 1875 states and 3374 transitions. [2020-12-22 10:04:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:43,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:04:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:43,985 INFO L225 Difference]: With dead ends: 1875 [2020-12-22 10:04:43,985 INFO L226 Difference]: Without dead ends: 1763 [2020-12-22 10:04:43,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:43,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-12-22 10:04:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1761. [2020-12-22 10:04:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2020-12-22 10:04:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 3193 transitions. [2020-12-22 10:04:44,040 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 3193 transitions. Word has length 77 [2020-12-22 10:04:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:44,041 INFO L481 AbstractCegarLoop]: Abstraction has 1761 states and 3193 transitions. [2020-12-22 10:04:44,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 3193 transitions. [2020-12-22 10:04:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:04:44,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:44,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:44,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:04:44,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:44,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1624501596, now seen corresponding path program 1 times [2020-12-22 10:04:44,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:44,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826008006] [2020-12-22 10:04:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:44,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826008006] [2020-12-22 10:04:44,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:44,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:04:44,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854581061] [2020-12-22 10:04:44,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:04:44,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:44,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:04:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:04:44,260 INFO L87 Difference]: Start difference. First operand 1761 states and 3193 transitions. Second operand 8 states. [2020-12-22 10:04:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:44,852 INFO L93 Difference]: Finished difference Result 4281 states and 7189 transitions. [2020-12-22 10:04:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:04:44,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:04:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:44,883 INFO L225 Difference]: With dead ends: 4281 [2020-12-22 10:04:44,884 INFO L226 Difference]: Without dead ends: 4071 [2020-12-22 10:04:44,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:04:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2020-12-22 10:04:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 1969. [2020-12-22 10:04:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1969 states. [2020-12-22 10:04:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 3517 transitions. [2020-12-22 10:04:45,012 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 3517 transitions. Word has length 77 [2020-12-22 10:04:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:45,012 INFO L481 AbstractCegarLoop]: Abstraction has 1969 states and 3517 transitions. [2020-12-22 10:04:45,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:04:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 3517 transitions. [2020-12-22 10:04:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:04:45,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:45,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:45,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:04:45,015 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash 806369108, now seen corresponding path program 1 times [2020-12-22 10:04:45,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:45,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393896037] [2020-12-22 10:04:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:45,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393896037] [2020-12-22 10:04:45,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:45,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:45,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143546965] [2020-12-22 10:04:45,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:45,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:45,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:45,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:45,167 INFO L87 Difference]: Start difference. First operand 1969 states and 3517 transitions. Second operand 3 states. [2020-12-22 10:04:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:45,253 INFO L93 Difference]: Finished difference Result 2589 states and 4489 transitions. [2020-12-22 10:04:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:45,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:04:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:45,268 INFO L225 Difference]: With dead ends: 2589 [2020-12-22 10:04:45,268 INFO L226 Difference]: Without dead ends: 2171 [2020-12-22 10:04:45,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-12-22 10:04:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2020-12-22 10:04:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2020-12-22 10:04:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3825 transitions. [2020-12-22 10:04:45,373 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3825 transitions. Word has length 79 [2020-12-22 10:04:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:45,374 INFO L481 AbstractCegarLoop]: Abstraction has 2169 states and 3825 transitions. [2020-12-22 10:04:45,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3825 transitions. [2020-12-22 10:04:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:04:45,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:45,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:45,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:04:45,378 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:45,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:45,383 INFO L82 PathProgramCache]: Analyzing trace with hash 872862620, now seen corresponding path program 1 times [2020-12-22 10:04:45,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:45,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127418274] [2020-12-22 10:04:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:45,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127418274] [2020-12-22 10:04:45,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:45,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:04:45,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64515590] [2020-12-22 10:04:45,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:04:45,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:04:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:04:45,773 INFO L87 Difference]: Start difference. First operand 2169 states and 3825 transitions. Second operand 8 states. [2020-12-22 10:04:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:46,219 INFO L93 Difference]: Finished difference Result 2787 states and 4789 transitions. [2020-12-22 10:04:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:04:46,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:04:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:46,235 INFO L225 Difference]: With dead ends: 2787 [2020-12-22 10:04:46,235 INFO L226 Difference]: Without dead ends: 2171 [2020-12-22 10:04:46,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:04:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-12-22 10:04:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2020-12-22 10:04:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2020-12-22 10:04:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3819 transitions. [2020-12-22 10:04:46,345 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3819 transitions. Word has length 79 [2020-12-22 10:04:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:46,345 INFO L481 AbstractCegarLoop]: Abstraction has 2169 states and 3819 transitions. [2020-12-22 10:04:46,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:04:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3819 transitions. [2020-12-22 10:04:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:04:46,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:46,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:46,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:04:46,354 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:46,355 INFO L82 PathProgramCache]: Analyzing trace with hash -385682984, now seen corresponding path program 1 times [2020-12-22 10:04:46,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:46,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149482229] [2020-12-22 10:04:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:46,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149482229] [2020-12-22 10:04:46,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:46,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:46,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995793634] [2020-12-22 10:04:46,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:46,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:46,470 INFO L87 Difference]: Start difference. First operand 2169 states and 3819 transitions. Second operand 3 states. [2020-12-22 10:04:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:46,581 INFO L93 Difference]: Finished difference Result 3329 states and 5613 transitions. [2020-12-22 10:04:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:46,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:04:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:46,598 INFO L225 Difference]: With dead ends: 3329 [2020-12-22 10:04:46,598 INFO L226 Difference]: Without dead ends: 2713 [2020-12-22 10:04:46,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2020-12-22 10:04:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2020-12-22 10:04:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2020-12-22 10:04:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4643 transitions. [2020-12-22 10:04:46,714 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4643 transitions. Word has length 79 [2020-12-22 10:04:46,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:46,715 INFO L481 AbstractCegarLoop]: Abstraction has 2711 states and 4643 transitions. [2020-12-22 10:04:46,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4643 transitions. [2020-12-22 10:04:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:04:46,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:46,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:46,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:04:46,719 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash -111995272, now seen corresponding path program 1 times [2020-12-22 10:04:46,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:46,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318104775] [2020-12-22 10:04:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:46,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:46,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318104775] [2020-12-22 10:04:46,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:46,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:46,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63440417] [2020-12-22 10:04:46,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:46,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:46,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:46,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:46,805 INFO L87 Difference]: Start difference. First operand 2711 states and 4643 transitions. Second operand 3 states. [2020-12-22 10:04:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:46,967 INFO L93 Difference]: Finished difference Result 4883 states and 7965 transitions. [2020-12-22 10:04:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:46,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:04:46,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:46,988 INFO L225 Difference]: With dead ends: 4883 [2020-12-22 10:04:46,989 INFO L226 Difference]: Without dead ends: 3725 [2020-12-22 10:04:46,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2020-12-22 10:04:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3723. [2020-12-22 10:04:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3723 states. [2020-12-22 10:04:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 6159 transitions. [2020-12-22 10:04:47,256 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 6159 transitions. Word has length 79 [2020-12-22 10:04:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:47,256 INFO L481 AbstractCegarLoop]: Abstraction has 3723 states and 6159 transitions. [2020-12-22 10:04:47,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 6159 transitions. [2020-12-22 10:04:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:04:47,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:47,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:47,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:04:47,258 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:47,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1707076376, now seen corresponding path program 1 times [2020-12-22 10:04:47,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:47,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855705078] [2020-12-22 10:04:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:47,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855705078] [2020-12-22 10:04:47,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:47,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:47,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722385852] [2020-12-22 10:04:47,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:47,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:47,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:47,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:47,338 INFO L87 Difference]: Start difference. First operand 3723 states and 6159 transitions. Second operand 3 states. [2020-12-22 10:04:47,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:47,610 INFO L93 Difference]: Finished difference Result 7775 states and 12273 transitions. [2020-12-22 10:04:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:47,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:04:47,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:47,653 INFO L225 Difference]: With dead ends: 7775 [2020-12-22 10:04:47,653 INFO L226 Difference]: Without dead ends: 5605 [2020-12-22 10:04:47,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5605 states. [2020-12-22 10:04:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5605 to 5603. [2020-12-22 10:04:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5603 states. [2020-12-22 10:04:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5603 states to 5603 states and 8927 transitions. [2020-12-22 10:04:47,999 INFO L78 Accepts]: Start accepts. Automaton has 5603 states and 8927 transitions. Word has length 79 [2020-12-22 10:04:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:47,999 INFO L481 AbstractCegarLoop]: Abstraction has 5603 states and 8927 transitions. [2020-12-22 10:04:47,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5603 states and 8927 transitions. [2020-12-22 10:04:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:04:48,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:48,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:48,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:04:48,001 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1886482360, now seen corresponding path program 1 times [2020-12-22 10:04:48,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:48,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258414266] [2020-12-22 10:04:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:48,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258414266] [2020-12-22 10:04:48,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:48,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:48,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499552040] [2020-12-22 10:04:48,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:48,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:48,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:48,093 INFO L87 Difference]: Start difference. First operand 5603 states and 8927 transitions. Second operand 3 states. [2020-12-22 10:04:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:48,620 INFO L93 Difference]: Finished difference Result 13127 states and 20097 transitions. [2020-12-22 10:04:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:48,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:04:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:48,648 INFO L225 Difference]: With dead ends: 13127 [2020-12-22 10:04:48,648 INFO L226 Difference]: Without dead ends: 9077 [2020-12-22 10:04:48,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9077 states. [2020-12-22 10:04:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9077 to 9075. [2020-12-22 10:04:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9075 states. [2020-12-22 10:04:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 13935 transitions. [2020-12-22 10:04:49,345 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 13935 transitions. Word has length 79 [2020-12-22 10:04:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:49,346 INFO L481 AbstractCegarLoop]: Abstraction has 9075 states and 13935 transitions. [2020-12-22 10:04:49,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 13935 transitions. [2020-12-22 10:04:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:04:49,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:49,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:49,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:04:49,347 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash 338936920, now seen corresponding path program 1 times [2020-12-22 10:04:49,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:49,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851057103] [2020-12-22 10:04:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:49,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851057103] [2020-12-22 10:04:49,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:49,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:04:49,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782874170] [2020-12-22 10:04:49,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:49,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:49,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:49,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:49,447 INFO L87 Difference]: Start difference. First operand 9075 states and 13935 transitions. Second operand 3 states. [2020-12-22 10:04:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:55,858 INFO L93 Difference]: Finished difference Result 12081 states and 19558 transitions. [2020-12-22 10:04:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:55,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 10:04:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:55,882 INFO L225 Difference]: With dead ends: 12081 [2020-12-22 10:04:55,883 INFO L226 Difference]: Without dead ends: 10577 [2020-12-22 10:04:55,887 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 10:04:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10577 states. [2020-12-22 10:04:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10577 to 10577. [2020-12-22 10:04:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-12-22 10:04:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15875 transitions. [2020-12-22 10:04:56,527 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15875 transitions. Word has length 80 [2020-12-22 10:04:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:56,528 INFO L481 AbstractCegarLoop]: Abstraction has 10577 states and 15875 transitions. [2020-12-22 10:04:56,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15875 transitions. [2020-12-22 10:04:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:04:56,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:56,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:56,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:04:56,530 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:56,530 INFO L82 PathProgramCache]: Analyzing trace with hash 874214487, now seen corresponding path program 1 times [2020-12-22 10:04:56,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:56,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328122421] [2020-12-22 10:04:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328122421] [2020-12-22 10:04:56,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:56,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:04:56,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405642220] [2020-12-22 10:04:56,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:04:56,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:56,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:04:56,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:04:56,700 INFO L87 Difference]: Start difference. First operand 10577 states and 15875 transitions. Second operand 8 states. [2020-12-22 10:04:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:57,993 INFO L93 Difference]: Finished difference Result 17040 states and 25146 transitions. [2020-12-22 10:04:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:04:57,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:04:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:58,032 INFO L225 Difference]: With dead ends: 17040 [2020-12-22 10:04:58,033 INFO L226 Difference]: Without dead ends: 17038 [2020-12-22 10:04:58,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:04:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17038 states. [2020-12-22 10:04:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17038 to 10961. [2020-12-22 10:04:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10961 states. [2020-12-22 10:04:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 16227 transitions. [2020-12-22 10:04:58,879 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 16227 transitions. Word has length 80 [2020-12-22 10:04:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:58,880 INFO L481 AbstractCegarLoop]: Abstraction has 10961 states and 16227 transitions. [2020-12-22 10:04:58,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:04:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 16227 transitions. [2020-12-22 10:04:58,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 10:04:58,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:58,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:04:58,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:04:58,882 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:58,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:58,882 INFO L82 PathProgramCache]: Analyzing trace with hash 488739155, now seen corresponding path program 1 times [2020-12-22 10:04:58,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:58,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788379344] [2020-12-22 10:04:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:04:58,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788379344] [2020-12-22 10:04:58,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:58,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:04:58,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264432691] [2020-12-22 10:04:58,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:58,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:58,953 INFO L87 Difference]: Start difference. First operand 10961 states and 16227 transitions. Second operand 3 states. [2020-12-22 10:05:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:05,699 INFO L93 Difference]: Finished difference Result 16973 states and 25731 transitions. [2020-12-22 10:05:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:05,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 10:05:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:05,728 INFO L225 Difference]: With dead ends: 16973 [2020-12-22 10:05:05,729 INFO L226 Difference]: Without dead ends: 13967 [2020-12-22 10:05:05,736 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 10:05:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13967 states. [2020-12-22 10:05:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13967 to 13965. [2020-12-22 10:05:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13965 states. [2020-12-22 10:05:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13965 states to 13965 states and 20114 transitions. [2020-12-22 10:05:06,431 INFO L78 Accepts]: Start accepts. Automaton has 13965 states and 20114 transitions. Word has length 82 [2020-12-22 10:05:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:06,432 INFO L481 AbstractCegarLoop]: Abstraction has 13965 states and 20114 transitions. [2020-12-22 10:05:06,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:05:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13965 states and 20114 transitions. [2020-12-22 10:05:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 10:05:06,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:06,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:06,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:05:06,439 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1411161737, now seen corresponding path program 1 times [2020-12-22 10:05:06,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:06,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505238866] [2020-12-22 10:05:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 10:05:06,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505238866] [2020-12-22 10:05:06,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:06,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:06,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976820280] [2020-12-22 10:05:06,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:06,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:06,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:06,622 INFO L87 Difference]: Start difference. First operand 13965 states and 20114 transitions. Second operand 8 states. [2020-12-22 10:05:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:08,981 INFO L93 Difference]: Finished difference Result 62971 states and 90825 transitions. [2020-12-22 10:05:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:05:08,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 10:05:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:09,074 INFO L225 Difference]: With dead ends: 62971 [2020-12-22 10:05:09,075 INFO L226 Difference]: Without dead ends: 55065 [2020-12-22 10:05:09,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:05:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55065 states. [2020-12-22 10:05:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55065 to 21869. [2020-12-22 10:05:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21869 states. [2020-12-22 10:05:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21869 states to 21869 states and 31442 transitions. [2020-12-22 10:05:10,507 INFO L78 Accepts]: Start accepts. Automaton has 21869 states and 31442 transitions. Word has length 112 [2020-12-22 10:05:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:10,508 INFO L481 AbstractCegarLoop]: Abstraction has 21869 states and 31442 transitions. [2020-12-22 10:05:10,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 21869 states and 31442 transitions. [2020-12-22 10:05:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 10:05:10,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:10,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:10,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:05:10,516 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1381639519, now seen corresponding path program 1 times [2020-12-22 10:05:10,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:10,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816440364] [2020-12-22 10:05:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:05:10,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816440364] [2020-12-22 10:05:10,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:10,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:10,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942822286] [2020-12-22 10:05:10,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:10,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:10,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:10,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:10,898 INFO L87 Difference]: Start difference. First operand 21869 states and 31442 transitions. Second operand 8 states. [2020-12-22 10:05:13,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:13,764 INFO L93 Difference]: Finished difference Result 70875 states and 102153 transitions. [2020-12-22 10:05:13,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:05:13,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 10:05:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:13,859 INFO L225 Difference]: With dead ends: 70875 [2020-12-22 10:05:13,860 INFO L226 Difference]: Without dead ends: 62969 [2020-12-22 10:05:13,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:05:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62969 states. [2020-12-22 10:05:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62969 to 33741. [2020-12-22 10:05:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33741 states. [2020-12-22 10:05:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33741 states to 33741 states and 48354 transitions. [2020-12-22 10:05:15,838 INFO L78 Accepts]: Start accepts. Automaton has 33741 states and 48354 transitions. Word has length 112 [2020-12-22 10:05:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:15,839 INFO L481 AbstractCegarLoop]: Abstraction has 33741 states and 48354 transitions. [2020-12-22 10:05:15,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 33741 states and 48354 transitions. [2020-12-22 10:05:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 10:05:15,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:15,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:15,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:05:15,849 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:15,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:15,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1107951807, now seen corresponding path program 1 times [2020-12-22 10:05:15,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:15,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201296801] [2020-12-22 10:05:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:05:15,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201296801] [2020-12-22 10:05:15,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:15,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:15,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910335137] [2020-12-22 10:05:15,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:15,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:15,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:15,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:16,000 INFO L87 Difference]: Start difference. First operand 33741 states and 48354 transitions. Second operand 8 states. [2020-12-22 10:05:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:20,172 INFO L93 Difference]: Finished difference Result 78779 states and 113481 transitions. [2020-12-22 10:05:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:05:20,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 10:05:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:20,261 INFO L225 Difference]: With dead ends: 78779 [2020-12-22 10:05:20,261 INFO L226 Difference]: Without dead ends: 70873 [2020-12-22 10:05:20,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:05:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70873 states. [2020-12-22 10:05:22,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70873 to 41645. [2020-12-22 10:05:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41645 states. [2020-12-22 10:05:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41645 states to 41645 states and 59682 transitions. [2020-12-22 10:05:23,078 INFO L78 Accepts]: Start accepts. Automaton has 41645 states and 59682 transitions. Word has length 112 [2020-12-22 10:05:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:23,079 INFO L481 AbstractCegarLoop]: Abstraction has 41645 states and 59682 transitions. [2020-12-22 10:05:23,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 41645 states and 59682 transitions. [2020-12-22 10:05:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 10:05:23,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:23,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:23,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:05:23,091 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:23,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:23,092 INFO L82 PathProgramCache]: Analyzing trace with hash 711119841, now seen corresponding path program 1 times [2020-12-22 10:05:23,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:23,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972801384] [2020-12-22 10:05:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:05:23,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972801384] [2020-12-22 10:05:23,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:23,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:23,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136223859] [2020-12-22 10:05:23,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:23,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:23,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:23,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:23,271 INFO L87 Difference]: Start difference. First operand 41645 states and 59682 transitions. Second operand 8 states. [2020-12-22 10:05:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:27,901 INFO L93 Difference]: Finished difference Result 86683 states and 124809 transitions. [2020-12-22 10:05:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:05:27,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 10:05:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:28,002 INFO L225 Difference]: With dead ends: 86683 [2020-12-22 10:05:28,002 INFO L226 Difference]: Without dead ends: 78777 [2020-12-22 10:05:28,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:05:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78777 states. [2020-12-22 10:05:31,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78777 to 49549. [2020-12-22 10:05:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49549 states. [2020-12-22 10:05:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49549 states to 49549 states and 71010 transitions. [2020-12-22 10:05:31,830 INFO L78 Accepts]: Start accepts. Automaton has 49549 states and 71010 transitions. Word has length 112 [2020-12-22 10:05:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:31,830 INFO L481 AbstractCegarLoop]: Abstraction has 49549 states and 71010 transitions. [2020-12-22 10:05:31,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 49549 states and 71010 transitions. [2020-12-22 10:05:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 10:05:31,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:31,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:31,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:05:31,852 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:31,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:31,852 INFO L82 PathProgramCache]: Analyzing trace with hash 890525825, now seen corresponding path program 1 times [2020-12-22 10:05:31,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:31,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387101803] [2020-12-22 10:05:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 10:05:32,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387101803] [2020-12-22 10:05:32,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:32,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:32,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286569939] [2020-12-22 10:05:32,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:32,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:32,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:32,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:32,020 INFO L87 Difference]: Start difference. First operand 49549 states and 71010 transitions. Second operand 8 states. [2020-12-22 10:05:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:37,576 INFO L93 Difference]: Finished difference Result 94587 states and 136137 transitions. [2020-12-22 10:05:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:05:37,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 10:05:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:37,668 INFO L225 Difference]: With dead ends: 94587 [2020-12-22 10:05:37,669 INFO L226 Difference]: Without dead ends: 86681 [2020-12-22 10:05:37,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:05:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86681 states. [2020-12-22 10:05:41,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86681 to 57453. [2020-12-22 10:05:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57453 states. [2020-12-22 10:05:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57453 states to 57453 states and 82338 transitions. [2020-12-22 10:05:41,978 INFO L78 Accepts]: Start accepts. Automaton has 57453 states and 82338 transitions. Word has length 112 [2020-12-22 10:05:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:41,979 INFO L481 AbstractCegarLoop]: Abstraction has 57453 states and 82338 transitions. [2020-12-22 10:05:41,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 57453 states and 82338 transitions. [2020-12-22 10:05:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 10:05:41,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:41,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:41,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:05:41,989 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:41,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:41,990 INFO L82 PathProgramCache]: Analyzing trace with hash -420877289, now seen corresponding path program 1 times [2020-12-22 10:05:41,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:41,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129682583] [2020-12-22 10:05:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:05:42,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129682583] [2020-12-22 10:05:42,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:42,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:05:42,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822125504] [2020-12-22 10:05:42,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:05:42,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:42,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:05:42,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:05:42,133 INFO L87 Difference]: Start difference. First operand 57453 states and 82338 transitions. Second operand 8 states. [2020-12-22 10:05:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:48,410 INFO L93 Difference]: Finished difference Result 97691 states and 140617 transitions. [2020-12-22 10:05:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:05:48,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 10:05:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:48,492 INFO L225 Difference]: With dead ends: 97691 [2020-12-22 10:05:48,492 INFO L226 Difference]: Without dead ends: 92185 [2020-12-22 10:05:48,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:05:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92185 states. [2020-12-22 10:05:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92185 to 62957. [2020-12-22 10:05:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62957 states. [2020-12-22 10:05:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62957 states to 62957 states and 90274 transitions. [2020-12-22 10:05:53,438 INFO L78 Accepts]: Start accepts. Automaton has 62957 states and 90274 transitions. Word has length 112 [2020-12-22 10:05:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:53,438 INFO L481 AbstractCegarLoop]: Abstraction has 62957 states and 90274 transitions. [2020-12-22 10:05:53,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:05:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 62957 states and 90274 transitions. [2020-12-22 10:05:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:05:53,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:53,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:05:53,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:05:53,448 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash 746098925, now seen corresponding path program 1 times [2020-12-22 10:05:53,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:53,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839302220] [2020-12-22 10:05:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:05:53,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839302220] [2020-12-22 10:05:53,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:05:53,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:05:53,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206387068] [2020-12-22 10:05:53,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:05:53,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:53,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:05:53,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:53,531 INFO L87 Difference]: Start difference. First operand 62957 states and 90274 transitions. Second operand 3 states. [2020-12-22 10:05:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:57,720 INFO L93 Difference]: Finished difference Result 119857 states and 171860 transitions. [2020-12-22 10:05:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:05:57,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:05:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:57,787 INFO L225 Difference]: With dead ends: 119857 [2020-12-22 10:05:57,787 INFO L226 Difference]: Without dead ends: 62959 [2020-12-22 10:05:57,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:05:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62959 states. [2020-12-22 10:06:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62959 to 62957. [2020-12-22 10:06:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62957 states. [2020-12-22 10:06:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62957 states to 62957 states and 89586 transitions. [2020-12-22 10:06:02,662 INFO L78 Accepts]: Start accepts. Automaton has 62957 states and 89586 transitions. Word has length 113 [2020-12-22 10:06:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:02,663 INFO L481 AbstractCegarLoop]: Abstraction has 62957 states and 89586 transitions. [2020-12-22 10:06:02,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 62957 states and 89586 transitions. [2020-12-22 10:06:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:06:02,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:02,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:02,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:06:02,669 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:02,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:02,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1169646557, now seen corresponding path program 1 times [2020-12-22 10:06:02,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:02,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384140389] [2020-12-22 10:06:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:02,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384140389] [2020-12-22 10:06:02,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:02,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:02,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378274900] [2020-12-22 10:06:02,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:02,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:02,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:02,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:02,745 INFO L87 Difference]: Start difference. First operand 62957 states and 89586 transitions. Second operand 3 states. [2020-12-22 10:06:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:05,208 INFO L93 Difference]: Finished difference Result 91409 states and 130036 transitions. [2020-12-22 10:06:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:05,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:06:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:05,245 INFO L225 Difference]: With dead ends: 91409 [2020-12-22 10:06:05,245 INFO L226 Difference]: Without dead ends: 34511 [2020-12-22 10:06:05,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34511 states. [2020-12-22 10:06:07,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34511 to 34509. [2020-12-22 10:06:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34509 states. [2020-12-22 10:06:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34509 states to 34509 states and 48794 transitions. [2020-12-22 10:06:07,797 INFO L78 Accepts]: Start accepts. Automaton has 34509 states and 48794 transitions. Word has length 113 [2020-12-22 10:06:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:07,797 INFO L481 AbstractCegarLoop]: Abstraction has 34509 states and 48794 transitions. [2020-12-22 10:06:07,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 34509 states and 48794 transitions. [2020-12-22 10:06:07,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:06:07,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:07,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:07,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 10:06:07,801 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:07,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1209709145, now seen corresponding path program 1 times [2020-12-22 10:06:07,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:07,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722738699] [2020-12-22 10:06:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:07,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722738699] [2020-12-22 10:06:07,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:07,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:07,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259756005] [2020-12-22 10:06:07,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:07,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:07,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:07,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:07,878 INFO L87 Difference]: Start difference. First operand 34509 states and 48794 transitions. Second operand 3 states. [2020-12-22 10:06:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:09,126 INFO L93 Difference]: Finished difference Result 48737 states and 68848 transitions. [2020-12-22 10:06:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:09,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:06:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:09,146 INFO L225 Difference]: With dead ends: 48737 [2020-12-22 10:06:09,146 INFO L226 Difference]: Without dead ends: 20287 [2020-12-22 10:06:09,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20287 states. [2020-12-22 10:06:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20287 to 20285. [2020-12-22 10:06:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20285 states. [2020-12-22 10:06:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20285 states to 20285 states and 28570 transitions. [2020-12-22 10:06:10,424 INFO L78 Accepts]: Start accepts. Automaton has 20285 states and 28570 transitions. Word has length 113 [2020-12-22 10:06:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:10,425 INFO L481 AbstractCegarLoop]: Abstraction has 20285 states and 28570 transitions. [2020-12-22 10:06:10,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 20285 states and 28570 transitions. [2020-12-22 10:06:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:06:10,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:10,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:10,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 10:06:10,427 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:10,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1498655857, now seen corresponding path program 1 times [2020-12-22 10:06:10,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:10,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412158938] [2020-12-22 10:06:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:10,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412158938] [2020-12-22 10:06:10,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:10,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:10,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822706180] [2020-12-22 10:06:10,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:10,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:10,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:10,504 INFO L87 Difference]: Start difference. First operand 20285 states and 28570 transitions. Second operand 3 states. [2020-12-22 10:06:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:11,198 INFO L93 Difference]: Finished difference Result 27401 states and 38512 transitions. [2020-12-22 10:06:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:11,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:06:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:11,212 INFO L225 Difference]: With dead ends: 27401 [2020-12-22 10:06:11,212 INFO L226 Difference]: Without dead ends: 13175 [2020-12-22 10:06:11,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13175 states. [2020-12-22 10:06:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13175 to 13173. [2020-12-22 10:06:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13173 states. [2020-12-22 10:06:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13173 states to 13173 states and 18544 transitions. [2020-12-22 10:06:11,777 INFO L78 Accepts]: Start accepts. Automaton has 13173 states and 18544 transitions. Word has length 113 [2020-12-22 10:06:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:11,777 INFO L481 AbstractCegarLoop]: Abstraction has 13173 states and 18544 transitions. [2020-12-22 10:06:11,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 13173 states and 18544 transitions. [2020-12-22 10:06:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:06:11,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:11,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:11,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 10:06:11,779 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:11,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:11,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1585774651, now seen corresponding path program 1 times [2020-12-22 10:06:11,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:11,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319025542] [2020-12-22 10:06:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:12,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319025542] [2020-12-22 10:06:12,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532180827] [2020-12-22 10:06:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:06:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:12,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 10:06:12,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:06:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:06:12,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:06:12,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:06:12,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057813036] [2020-12-22 10:06:12,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 10:06:12,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:12,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 10:06:12,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-12-22 10:06:12,868 INFO L87 Difference]: Start difference. First operand 13173 states and 18544 transitions. Second operand 21 states. [2020-12-22 10:06:17,050 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 10:06:17,404 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-12-22 10:06:17,615 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:06:18,142 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 10:06:22,199 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 10:06:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:23,678 INFO L93 Difference]: Finished difference Result 61052 states and 83849 transitions. [2020-12-22 10:06:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-12-22 10:06:23,678 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 113 [2020-12-22 10:06:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:23,832 INFO L225 Difference]: With dead ends: 61052 [2020-12-22 10:06:23,833 INFO L226 Difference]: Without dead ends: 53938 [2020-12-22 10:06:23,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3479 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1672, Invalid=8228, Unknown=0, NotChecked=0, Total=9900 [2020-12-22 10:06:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53938 states. [2020-12-22 10:06:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53938 to 36193. [2020-12-22 10:06:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36193 states. [2020-12-22 10:06:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36193 states to 36193 states and 49712 transitions. [2020-12-22 10:06:27,249 INFO L78 Accepts]: Start accepts. Automaton has 36193 states and 49712 transitions. Word has length 113 [2020-12-22 10:06:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:27,249 INFO L481 AbstractCegarLoop]: Abstraction has 36193 states and 49712 transitions. [2020-12-22 10:06:27,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 10:06:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 36193 states and 49712 transitions. [2020-12-22 10:06:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:06:27,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:27,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:27,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 10:06:27,456 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash -409173495, now seen corresponding path program 1 times [2020-12-22 10:06:27,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:27,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879650585] [2020-12-22 10:06:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879650585] [2020-12-22 10:06:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756138303] [2020-12-22 10:06:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:06:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:27,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 10:06:27,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:06:28,135 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:06:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:28,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:06:28,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-22 10:06:28,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846907581] [2020-12-22 10:06:28,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 10:06:28,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:28,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 10:06:28,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-12-22 10:06:28,501 INFO L87 Difference]: Start difference. First operand 36193 states and 49712 transitions. Second operand 18 states. [2020-12-22 10:06:28,655 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:06:29,134 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:06:29,755 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-12-22 10:06:31,131 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:06:31,618 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:06:31,943 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:06:33,891 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 10:06:34,419 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 10:06:34,574 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:06:34,714 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 10:06:35,232 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 10:06:37,268 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 10:06:37,535 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:06:37,696 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:06:40,143 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:06:40,669 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:06:40,852 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:06:41,121 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 10:06:41,626 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:06:41,811 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:06:42,083 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:06:42,267 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 10:06:43,116 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:06:47,266 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 10:06:47,397 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:06:47,596 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 10:06:47,753 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 10:06:48,754 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:06:49,367 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 10:07:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:20,582 INFO L93 Difference]: Finished difference Result 394963 states and 533296 transitions. [2020-12-22 10:07:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-12-22 10:07:20,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 114 [2020-12-22 10:07:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:21,374 INFO L225 Difference]: With dead ends: 394963 [2020-12-22 10:07:21,375 INFO L226 Difference]: Without dead ends: 364829 [2020-12-22 10:07:21,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6383 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=2552, Invalid=14478, Unknown=0, NotChecked=0, Total=17030 [2020-12-22 10:07:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364829 states. [2020-12-22 10:07:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364829 to 142470. [2020-12-22 10:07:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142470 states. [2020-12-22 10:07:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142470 states to 142470 states and 191238 transitions. [2020-12-22 10:07:38,795 INFO L78 Accepts]: Start accepts. Automaton has 142470 states and 191238 transitions. Word has length 114 [2020-12-22 10:07:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:38,795 INFO L481 AbstractCegarLoop]: Abstraction has 142470 states and 191238 transitions. [2020-12-22 10:07:38,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 10:07:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 142470 states and 191238 transitions. [2020-12-22 10:07:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:07:38,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:38,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:39,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 10:07:39,015 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:39,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1061210015, now seen corresponding path program 1 times [2020-12-22 10:07:39,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:39,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415196956] [2020-12-22 10:07:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:39,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415196956] [2020-12-22 10:07:39,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:39,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:39,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644697568] [2020-12-22 10:07:39,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:39,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:39,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:39,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:39,123 INFO L87 Difference]: Start difference. First operand 142470 states and 191238 transitions. Second operand 3 states. [2020-12-22 10:07:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:45,309 INFO L93 Difference]: Finished difference Result 194562 states and 260373 transitions. [2020-12-22 10:07:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:45,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-12-22 10:07:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:45,389 INFO L225 Difference]: With dead ends: 194562 [2020-12-22 10:07:45,389 INFO L226 Difference]: Without dead ends: 58151 [2020-12-22 10:07:45,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58151 states. [2020-12-22 10:07:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58151 to 54675. [2020-12-22 10:07:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54675 states. [2020-12-22 10:07:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54675 states to 54675 states and 72820 transitions. [2020-12-22 10:07:51,146 INFO L78 Accepts]: Start accepts. Automaton has 54675 states and 72820 transitions. Word has length 114 [2020-12-22 10:07:51,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:51,147 INFO L481 AbstractCegarLoop]: Abstraction has 54675 states and 72820 transitions. [2020-12-22 10:07:51,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:51,147 INFO L276 IsEmpty]: Start isEmpty. Operand 54675 states and 72820 transitions. [2020-12-22 10:07:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:07:51,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:51,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:51,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 10:07:51,150 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:51,150 INFO L82 PathProgramCache]: Analyzing trace with hash 707187499, now seen corresponding path program 1 times [2020-12-22 10:07:51,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:51,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117585817] [2020-12-22 10:07:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 10:07:51,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117585817] [2020-12-22 10:07:51,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:51,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:07:51,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662340390] [2020-12-22 10:07:51,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:07:51,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:51,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:07:51,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:07:51,270 INFO L87 Difference]: Start difference. First operand 54675 states and 72820 transitions. Second operand 6 states. [2020-12-22 10:07:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:56,668 INFO L93 Difference]: Finished difference Result 100146 states and 133044 transitions. [2020-12-22 10:07:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:07:56,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-12-22 10:07:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:56,718 INFO L225 Difference]: With dead ends: 100146 [2020-12-22 10:07:56,718 INFO L226 Difference]: Without dead ends: 51647 [2020-12-22 10:07:56,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:07:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51647 states. [2020-12-22 10:08:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51647 to 51647. [2020-12-22 10:08:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51647 states. [2020-12-22 10:08:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51647 states to 51647 states and 68401 transitions. [2020-12-22 10:08:02,382 INFO L78 Accepts]: Start accepts. Automaton has 51647 states and 68401 transitions. Word has length 114 [2020-12-22 10:08:02,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:02,382 INFO L481 AbstractCegarLoop]: Abstraction has 51647 states and 68401 transitions. [2020-12-22 10:08:02,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:08:02,382 INFO L276 IsEmpty]: Start isEmpty. Operand 51647 states and 68401 transitions. [2020-12-22 10:08:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:08:02,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:02,385 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:02,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 10:08:02,385 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:02,385 INFO L82 PathProgramCache]: Analyzing trace with hash 125621387, now seen corresponding path program 1 times [2020-12-22 10:08:02,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:02,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865374702] [2020-12-22 10:08:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 10:08:02,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865374702] [2020-12-22 10:08:02,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:02,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:08:02,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785478192] [2020-12-22 10:08:02,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:08:02,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:02,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:08:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:08:02,485 INFO L87 Difference]: Start difference. First operand 51647 states and 68401 transitions. Second operand 6 states. [2020-12-22 10:08:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:06,930 INFO L93 Difference]: Finished difference Result 86349 states and 113894 transitions. [2020-12-22 10:08:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:08:06,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-12-22 10:08:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:06,971 INFO L225 Difference]: With dead ends: 86349 [2020-12-22 10:08:06,971 INFO L226 Difference]: Without dead ends: 40958 [2020-12-22 10:08:06,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:08:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40958 states.