java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:43:37,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:43:37,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:43:37,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:43:37,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:43:38,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:43:38,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:43:38,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:43:38,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:43:38,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:43:38,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:43:38,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:43:38,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:43:38,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:43:38,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:43:38,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:43:38,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:43:38,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:43:38,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:43:38,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:43:38,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:43:38,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:43:38,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:43:38,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:43:38,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:43:38,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:43:38,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:43:38,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:43:38,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:43:38,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:43:38,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:43:38,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:43:38,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:43:38,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:43:38,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:43:38,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:43:38,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:43:38,094 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:43:38,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:43:38,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:43:38,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:43:38,096 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:43:38,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:43:38,097 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:43:38,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:43:38,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:43:38,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:43:38,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:43:38,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:43:38,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:43:38,098 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:43:38,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:43:38,099 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:43:38,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:43:38,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:43:38,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:43:38,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:43:38,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:43:38,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:43:38,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:43:38,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:43:38,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:43:38,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:43:38,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:43:38,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:43:38,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:43:38,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:43:38,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:43:38,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:43:38,425 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:43:38,425 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:43:38,426 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:43:38,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820d40218/4dfcf645e8794382be0783e1ed576e99/FLAGe350de3ac [2019-10-14 23:43:39,049 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:43:39,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:43:39,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820d40218/4dfcf645e8794382be0783e1ed576e99/FLAGe350de3ac [2019-10-14 23:43:39,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820d40218/4dfcf645e8794382be0783e1ed576e99 [2019-10-14 23:43:39,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:43:39,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:43:39,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:43:39,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:43:39,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:43:39,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:39" (1/1) ... [2019-10-14 23:43:39,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe33d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:39, skipping insertion in model container [2019-10-14 23:43:39,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:39" (1/1) ... [2019-10-14 23:43:39,390 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:43:39,457 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:43:39,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:43:39,969 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:43:40,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:43:40,117 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:43:40,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40 WrapperNode [2019-10-14 23:43:40,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:43:40,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:43:40,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:43:40,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:43:40,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (1/1) ... [2019-10-14 23:43:40,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (1/1) ... [2019-10-14 23:43:40,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (1/1) ... [2019-10-14 23:43:40,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (1/1) ... [2019-10-14 23:43:40,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (1/1) ... [2019-10-14 23:43:40,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (1/1) ... [2019-10-14 23:43:40,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (1/1) ... [2019-10-14 23:43:40,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:43:40,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:43:40,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:43:40,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:43:40,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (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 [2019-10-14 23:43:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:43:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:43:40,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:43:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:43:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:43:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:43:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:43:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:43:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:43:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:43:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:43:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:43:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:43:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:43:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:43:40,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:43:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:43:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:43:41,637 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:43:41,637 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:43:41,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:41 BoogieIcfgContainer [2019-10-14 23:43:41,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:43:41,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:43:41,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:43:41,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:43:41,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:43:39" (1/3) ... [2019-10-14 23:43:41,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21987a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:41, skipping insertion in model container [2019-10-14 23:43:41,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:40" (2/3) ... [2019-10-14 23:43:41,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21987a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:41, skipping insertion in model container [2019-10-14 23:43:41,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:41" (3/3) ... [2019-10-14 23:43:41,648 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-10-14 23:43:41,659 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:43:41,669 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-14 23:43:41,682 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-14 23:43:41,710 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:43:41,710 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:43:41,711 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:43:41,711 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:43:41,711 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:43:41,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:43:41,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:43:41,711 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:43:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-10-14 23:43:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-14 23:43:41,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:41,749 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:41,751 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:41,756 INFO L82 PathProgramCache]: Analyzing trace with hash 621454591, now seen corresponding path program 1 times [2019-10-14 23:43:41,762 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:41,763 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682344651] [2019-10-14 23:43:41,763 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:41,763 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:41,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:42,726 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:42,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682344651] [2019-10-14 23:43:42,814 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:42,814 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:42,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308183403] [2019-10-14 23:43:42,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:42,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:42,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:42,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:42,838 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2019-10-14 23:43:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:45,039 INFO L93 Difference]: Finished difference Result 692 states and 1230 transitions. [2019-10-14 23:43:45,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:43:45,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2019-10-14 23:43:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:45,061 INFO L225 Difference]: With dead ends: 692 [2019-10-14 23:43:45,061 INFO L226 Difference]: Without dead ends: 455 [2019-10-14 23:43:45,066 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:43:45,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-10-14 23:43:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 435. [2019-10-14 23:43:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-14 23:43:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 633 transitions. [2019-10-14 23:43:45,156 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 633 transitions. Word has length 95 [2019-10-14 23:43:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:45,157 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 633 transitions. [2019-10-14 23:43:45,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:43:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 633 transitions. [2019-10-14 23:43:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-14 23:43:45,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:45,162 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:45,163 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash -12071785, now seen corresponding path program 1 times [2019-10-14 23:43:45,164 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:45,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807081863] [2019-10-14 23:43:45,164 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:45,164 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:45,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:45,473 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:45,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807081863] [2019-10-14 23:43:45,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:45,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:45,514 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168570982] [2019-10-14 23:43:45,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:45,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:45,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:45,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:45,523 INFO L87 Difference]: Start difference. First operand 435 states and 633 transitions. Second operand 4 states. [2019-10-14 23:43:47,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:47,456 INFO L93 Difference]: Finished difference Result 1259 states and 1829 transitions. [2019-10-14 23:43:47,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:43:47,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-10-14 23:43:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:47,464 INFO L225 Difference]: With dead ends: 1259 [2019-10-14 23:43:47,464 INFO L226 Difference]: Without dead ends: 856 [2019-10-14 23:43:47,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2019-10-14 23:43:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 437. [2019-10-14 23:43:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-10-14 23:43:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 635 transitions. [2019-10-14 23:43:47,509 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 635 transitions. Word has length 96 [2019-10-14 23:43:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:47,509 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 635 transitions. [2019-10-14 23:43:47,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 635 transitions. [2019-10-14 23:43:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-14 23:43:47,514 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:47,514 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:47,514 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:47,515 INFO L82 PathProgramCache]: Analyzing trace with hash 551245475, now seen corresponding path program 1 times [2019-10-14 23:43:47,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:47,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939482917] [2019-10-14 23:43:47,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:47,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:47,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:47,844 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:47,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939482917] [2019-10-14 23:43:47,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:47,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:47,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922101210] [2019-10-14 23:43:47,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:47,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:47,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:47,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:47,887 INFO L87 Difference]: Start difference. First operand 437 states and 635 transitions. Second operand 4 states. [2019-10-14 23:43:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:49,798 INFO L93 Difference]: Finished difference Result 1094 states and 1608 transitions. [2019-10-14 23:43:49,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:43:49,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2019-10-14 23:43:49,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:49,807 INFO L225 Difference]: With dead ends: 1094 [2019-10-14 23:43:49,807 INFO L226 Difference]: Without dead ends: 839 [2019-10-14 23:43:49,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:49,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-10-14 23:43:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 821. [2019-10-14 23:43:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-10-14 23:43:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1189 transitions. [2019-10-14 23:43:49,865 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1189 transitions. Word has length 97 [2019-10-14 23:43:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:49,866 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 1189 transitions. [2019-10-14 23:43:49,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1189 transitions. [2019-10-14 23:43:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-14 23:43:49,876 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:49,876 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:49,876 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash -604854874, now seen corresponding path program 1 times [2019-10-14 23:43:49,878 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:49,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341486965] [2019-10-14 23:43:49,878 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:49,878 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:49,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:50,304 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:50,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341486965] [2019-10-14 23:43:50,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:50,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:50,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893915939] [2019-10-14 23:43:50,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:50,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:50,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:50,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:50,334 INFO L87 Difference]: Start difference. First operand 821 states and 1189 transitions. Second operand 5 states. [2019-10-14 23:43:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:51,502 INFO L93 Difference]: Finished difference Result 1281 states and 1871 transitions. [2019-10-14 23:43:51,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:51,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-14 23:43:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:51,507 INFO L225 Difference]: With dead ends: 1281 [2019-10-14 23:43:51,507 INFO L226 Difference]: Without dead ends: 632 [2019-10-14 23:43:51,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:43:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-14 23:43:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2019-10-14 23:43:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2019-10-14 23:43:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 909 transitions. [2019-10-14 23:43:51,543 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 909 transitions. Word has length 97 [2019-10-14 23:43:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:51,543 INFO L462 AbstractCegarLoop]: Abstraction has 632 states and 909 transitions. [2019-10-14 23:43:51,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:43:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 909 transitions. [2019-10-14 23:43:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:43:51,546 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:51,546 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:51,546 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:51,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1078583877, now seen corresponding path program 1 times [2019-10-14 23:43:51,547 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:51,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426393344] [2019-10-14 23:43:51,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:51,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:51,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:51,932 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:51,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426393344] [2019-10-14 23:43:51,981 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:51,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:51,982 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175151014] [2019-10-14 23:43:51,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:43:51,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:51,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:43:51,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:43:51,984 INFO L87 Difference]: Start difference. First operand 632 states and 909 transitions. Second operand 6 states. [2019-10-14 23:43:52,354 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-14 23:43:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:53,719 INFO L93 Difference]: Finished difference Result 1328 states and 1993 transitions. [2019-10-14 23:43:53,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:43:53,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-14 23:43:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:53,728 INFO L225 Difference]: With dead ends: 1328 [2019-10-14 23:43:53,728 INFO L226 Difference]: Without dead ends: 867 [2019-10-14 23:43:53,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:43:53,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2019-10-14 23:43:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2019-10-14 23:43:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2019-10-14 23:43:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1286 transitions. [2019-10-14 23:43:53,789 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1286 transitions. Word has length 99 [2019-10-14 23:43:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:53,790 INFO L462 AbstractCegarLoop]: Abstraction has 865 states and 1286 transitions. [2019-10-14 23:43:53,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:43:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1286 transitions. [2019-10-14 23:43:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:43:53,793 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:53,793 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:53,795 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1205034742, now seen corresponding path program 1 times [2019-10-14 23:43:53,796 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:53,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900952766] [2019-10-14 23:43:53,796 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:53,796 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:53,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:54,252 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:54,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900952766] [2019-10-14 23:43:54,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:54,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:54,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150836566] [2019-10-14 23:43:54,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:54,297 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:54,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:54,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:54,298 INFO L87 Difference]: Start difference. First operand 865 states and 1286 transitions. Second operand 5 states. [2019-10-14 23:43:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:55,870 INFO L93 Difference]: Finished difference Result 2160 states and 3219 transitions. [2019-10-14 23:43:55,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:55,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-14 23:43:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:55,879 INFO L225 Difference]: With dead ends: 2160 [2019-10-14 23:43:55,880 INFO L226 Difference]: Without dead ends: 1318 [2019-10-14 23:43:55,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:43:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2019-10-14 23:43:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1304. [2019-10-14 23:43:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2019-10-14 23:43:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1930 transitions. [2019-10-14 23:43:55,952 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1930 transitions. Word has length 99 [2019-10-14 23:43:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:55,952 INFO L462 AbstractCegarLoop]: Abstraction has 1304 states and 1930 transitions. [2019-10-14 23:43:55,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:43:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1930 transitions. [2019-10-14 23:43:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-14 23:43:55,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:55,955 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:55,956 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:55,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2136447595, now seen corresponding path program 1 times [2019-10-14 23:43:55,956 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:55,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684545400] [2019-10-14 23:43:55,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:55,958 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:55,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:56,266 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:56,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684545400] [2019-10-14 23:43:56,301 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:56,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:56,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978670523] [2019-10-14 23:43:56,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:56,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:56,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:56,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:56,304 INFO L87 Difference]: Start difference. First operand 1304 states and 1930 transitions. Second operand 5 states. [2019-10-14 23:43:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:57,319 INFO L93 Difference]: Finished difference Result 2251 states and 3353 transitions. [2019-10-14 23:43:57,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:43:57,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-14 23:43:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:57,327 INFO L225 Difference]: With dead ends: 2251 [2019-10-14 23:43:57,327 INFO L226 Difference]: Without dead ends: 1304 [2019-10-14 23:43:57,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:43:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2019-10-14 23:43:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1304. [2019-10-14 23:43:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2019-10-14 23:43:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1929 transitions. [2019-10-14 23:43:57,396 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1929 transitions. Word has length 101 [2019-10-14 23:43:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:57,396 INFO L462 AbstractCegarLoop]: Abstraction has 1304 states and 1929 transitions. [2019-10-14 23:43:57,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:43:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1929 transitions. [2019-10-14 23:43:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-14 23:43:57,398 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:57,399 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:57,399 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:57,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:57,399 INFO L82 PathProgramCache]: Analyzing trace with hash 752353320, now seen corresponding path program 1 times [2019-10-14 23:43:57,400 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:57,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035772015] [2019-10-14 23:43:57,400 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:57,400 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:57,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:57,662 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:57,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035772015] [2019-10-14 23:43:57,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:57,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:43:57,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618775781] [2019-10-14 23:43:57,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:43:57,693 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:57,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:43:57,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:57,694 INFO L87 Difference]: Start difference. First operand 1304 states and 1929 transitions. Second operand 4 states. [2019-10-14 23:43:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:43:59,333 INFO L93 Difference]: Finished difference Result 2939 states and 4429 transitions. [2019-10-14 23:43:59,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:43:59,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2019-10-14 23:43:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:43:59,342 INFO L225 Difference]: With dead ends: 2939 [2019-10-14 23:43:59,342 INFO L226 Difference]: Without dead ends: 1968 [2019-10-14 23:43:59,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:43:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2019-10-14 23:43:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1956. [2019-10-14 23:43:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2019-10-14 23:43:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2882 transitions. [2019-10-14 23:43:59,444 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2882 transitions. Word has length 101 [2019-10-14 23:43:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:43:59,445 INFO L462 AbstractCegarLoop]: Abstraction has 1956 states and 2882 transitions. [2019-10-14 23:43:59,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:43:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2882 transitions. [2019-10-14 23:43:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:43:59,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:43:59,448 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:43:59,448 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:43:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:43:59,448 INFO L82 PathProgramCache]: Analyzing trace with hash -401467718, now seen corresponding path program 1 times [2019-10-14 23:43:59,449 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:43:59,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980127556] [2019-10-14 23:43:59,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:59,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:43:59,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:43:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:59,772 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:43:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:43:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:43:59,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980127556] [2019-10-14 23:43:59,800 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:43:59,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:43:59,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506054631] [2019-10-14 23:43:59,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:43:59,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:43:59,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:43:59,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:43:59,802 INFO L87 Difference]: Start difference. First operand 1956 states and 2882 transitions. Second operand 5 states. [2019-10-14 23:44:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:01,044 INFO L93 Difference]: Finished difference Result 5625 states and 8282 transitions. [2019-10-14 23:44:01,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:01,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2019-10-14 23:44:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:01,062 INFO L225 Difference]: With dead ends: 5625 [2019-10-14 23:44:01,063 INFO L226 Difference]: Without dead ends: 3712 [2019-10-14 23:44:01,068 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2019-10-14 23:44:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3639. [2019-10-14 23:44:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2019-10-14 23:44:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5322 transitions. [2019-10-14 23:44:01,285 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5322 transitions. Word has length 103 [2019-10-14 23:44:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:01,286 INFO L462 AbstractCegarLoop]: Abstraction has 3639 states and 5322 transitions. [2019-10-14 23:44:01,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5322 transitions. [2019-10-14 23:44:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:44:01,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:01,291 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:01,291 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:01,291 INFO L82 PathProgramCache]: Analyzing trace with hash -344356272, now seen corresponding path program 1 times [2019-10-14 23:44:01,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:01,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053986837] [2019-10-14 23:44:01,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:01,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:01,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:01,550 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:44:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:01,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053986837] [2019-10-14 23:44:01,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:01,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:01,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252811384] [2019-10-14 23:44:01,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:01,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:01,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:01,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:01,617 INFO L87 Difference]: Start difference. First operand 3639 states and 5322 transitions. Second operand 4 states. [2019-10-14 23:44:03,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:03,260 INFO L93 Difference]: Finished difference Result 10723 states and 15717 transitions. [2019-10-14 23:44:03,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:03,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2019-10-14 23:44:03,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:03,283 INFO L225 Difference]: With dead ends: 10723 [2019-10-14 23:44:03,283 INFO L226 Difference]: Without dead ends: 7190 [2019-10-14 23:44:03,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7190 states. [2019-10-14 23:44:03,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7190 to 3645. [2019-10-14 23:44:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3645 states. [2019-10-14 23:44:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5328 transitions. [2019-10-14 23:44:03,558 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5328 transitions. Word has length 104 [2019-10-14 23:44:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:03,558 INFO L462 AbstractCegarLoop]: Abstraction has 3645 states and 5328 transitions. [2019-10-14 23:44:03,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:03,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5328 transitions. [2019-10-14 23:44:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-14 23:44:03,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:03,563 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:03,563 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:03,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1407880473, now seen corresponding path program 1 times [2019-10-14 23:44:03,564 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:03,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410707770] [2019-10-14 23:44:03,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:03,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:03,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:03,836 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:44:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:03,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410707770] [2019-10-14 23:44:03,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:03,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:03,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072131306] [2019-10-14 23:44:03,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:44:03,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:03,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:44:03,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:03,862 INFO L87 Difference]: Start difference. First operand 3645 states and 5328 transitions. Second operand 5 states. [2019-10-14 23:44:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:04,906 INFO L93 Difference]: Finished difference Result 7248 states and 10600 transitions. [2019-10-14 23:44:04,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:04,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2019-10-14 23:44:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:04,918 INFO L225 Difference]: With dead ends: 7248 [2019-10-14 23:44:04,918 INFO L226 Difference]: Without dead ends: 3639 [2019-10-14 23:44:04,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2019-10-14 23:44:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3639. [2019-10-14 23:44:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2019-10-14 23:44:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5316 transitions. [2019-10-14 23:44:05,165 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5316 transitions. Word has length 105 [2019-10-14 23:44:05,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:05,165 INFO L462 AbstractCegarLoop]: Abstraction has 3639 states and 5316 transitions. [2019-10-14 23:44:05,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:44:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5316 transitions. [2019-10-14 23:44:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-14 23:44:05,169 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:05,169 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:05,170 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:05,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1322542982, now seen corresponding path program 1 times [2019-10-14 23:44:05,170 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:05,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806240948] [2019-10-14 23:44:05,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:05,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:05,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:05,462 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:44:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:05,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806240948] [2019-10-14 23:44:05,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:05,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:05,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685319781] [2019-10-14 23:44:05,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:05,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:05,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:05,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:05,491 INFO L87 Difference]: Start difference. First operand 3639 states and 5316 transitions. Second operand 4 states. [2019-10-14 23:44:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:07,244 INFO L93 Difference]: Finished difference Result 8390 states and 12380 transitions. [2019-10-14 23:44:07,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:44:07,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-14 23:44:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:07,267 INFO L225 Difference]: With dead ends: 8390 [2019-10-14 23:44:07,267 INFO L226 Difference]: Without dead ends: 5435 [2019-10-14 23:44:07,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5435 states. [2019-10-14 23:44:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5435 to 5362. [2019-10-14 23:44:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5362 states. [2019-10-14 23:44:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5362 states to 5362 states and 7702 transitions. [2019-10-14 23:44:07,497 INFO L78 Accepts]: Start accepts. Automaton has 5362 states and 7702 transitions. Word has length 105 [2019-10-14 23:44:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:07,498 INFO L462 AbstractCegarLoop]: Abstraction has 5362 states and 7702 transitions. [2019-10-14 23:44:07,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:07,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5362 states and 7702 transitions. [2019-10-14 23:44:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:44:07,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:07,503 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:07,503 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash 826091784, now seen corresponding path program 1 times [2019-10-14 23:44:07,504 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:07,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269559822] [2019-10-14 23:44:07,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:07,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:07,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:07,954 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:44:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:07,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269559822] [2019-10-14 23:44:07,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:07,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:44:07,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425318239] [2019-10-14 23:44:07,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:44:07,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:07,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:44:07,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:44:07,994 INFO L87 Difference]: Start difference. First operand 5362 states and 7702 transitions. Second operand 13 states. [2019-10-14 23:44:08,273 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2019-10-14 23:44:10,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:10,615 INFO L93 Difference]: Finished difference Result 15774 states and 23850 transitions. [2019-10-14 23:44:10,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:44:10,615 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 107 [2019-10-14 23:44:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:10,642 INFO L225 Difference]: With dead ends: 15774 [2019-10-14 23:44:10,642 INFO L226 Difference]: Without dead ends: 12444 [2019-10-14 23:44:10,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:44:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12444 states. [2019-10-14 23:44:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12444 to 10908. [2019-10-14 23:44:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10908 states. [2019-10-14 23:44:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10908 states to 10908 states and 16052 transitions. [2019-10-14 23:44:11,298 INFO L78 Accepts]: Start accepts. Automaton has 10908 states and 16052 transitions. Word has length 107 [2019-10-14 23:44:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:11,299 INFO L462 AbstractCegarLoop]: Abstraction has 10908 states and 16052 transitions. [2019-10-14 23:44:11,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:44:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10908 states and 16052 transitions. [2019-10-14 23:44:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:44:11,306 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:11,307 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:44:11,307 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:11,307 INFO L82 PathProgramCache]: Analyzing trace with hash -583385139, now seen corresponding path program 1 times [2019-10-14 23:44:11,308 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:11,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692724096] [2019-10-14 23:44:11,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:11,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:11,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:11,680 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-14 23:44:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:11,709 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692724096] [2019-10-14 23:44:11,709 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:11,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:11,710 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408792543] [2019-10-14 23:44:11,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:44:11,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:11,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:44:11,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:44:11,711 INFO L87 Difference]: Start difference. First operand 10908 states and 16052 transitions. Second operand 9 states. [2019-10-14 23:44:11,953 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2019-10-14 23:44:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:13,263 INFO L93 Difference]: Finished difference Result 15628 states and 23581 transitions. [2019-10-14 23:44:13,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:44:13,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2019-10-14 23:44:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:13,278 INFO L225 Difference]: With dead ends: 15628 [2019-10-14 23:44:13,279 INFO L226 Difference]: Without dead ends: 7884 [2019-10-14 23:44:13,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:44:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7884 states.